MAGAZINE FOR HYDROPOWER TECHNOLOGY HyPower

#28 | Autumn 2016

HYDROPOWER IN AFRICA HIGH POTENTIAL

SUCCESSFUL PARTNERSHIPS REPLACE OR REFURBISH?

FULL LINE SUPPLIER WHY SMALL HYDRO IS BIG NEWS EDITORIAL

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Publisher: Voith GmbH St. Pöltener Str. 43 89522 Heidenheim Germany

Responsible for the publisher: Kristine Adams

Editor-in-chief: Gudrun Köpf

Editorial Board: Elke Kleinknecht, Susanne Speiser, Dr. Vesna Stirnadel

In cooperation with: C3 Creative Code and Content GmbH, Heiligegeistkirchplatz 1, 10178 Berlin, Germany www.c3.co

Paper: HyPower is printed on Respecta Silk. This paper was produced on a Voith paper machine.

Copyright: UNLOCKING POWERFUL No part of this publication may be copied, reproduced or otherwise disseminated, POTENTIAL nor may any of the content in it be used in part or in whole in other works in any form whatsoever, without express written Diversity. Complexity. Potential. Three words dance. We work closely with leading financial permission of the editor. that sum up Africa pretty well in many different institutions and insurers to help our African contexts – geographical, political, economic customers spread the cost of building or reha- and social. They also apply to Africa’s energy- bilitating hydropower facilities over realistic time generation infrastructure. While some African frames. Our experts in Heidenheim and across countries have plentiful oil and gas reserves, the world are ready and willing, not only to some have none. Some can rely on hydropow- manufacture the equipment required, but to er for nearly all their power requirements, some spend weeks and months on site, working need to import almost all their electricity from closely with customers to transfer knowledge, outside their borders. And even if the resources build skills and ensure that once a plant is com- exist, building an infrastructure that delivers pleted, it can be run effectively by local people. power to homes and businesses reliably is an- We are also investing in improving our local ser- other challenge altogether – especially in coun- vicing capabilities to permanently improve ser- tries that have been ravaged by recent or cur- vice for our customers. rent conflicts. This new edition of HyPower showcases Join us on: YOUR FEEDBACK: If you have any As a result, there is one reality that applies how customers and communities in Africa and comments or questions on this issue of to some areas of every African country: elec- elsewhere are benefiting from maximizing their HyPower, please contact us: [email protected] tricity supply is nowhere near sufficient to meet hydropower potential, and leveraging the new- https://twitter.com/voith_hydro demand. In fact, even in 2016, around three- est technologies to do so. Enjoy! quarters of the African population do not have Photographs: access to reliable, constant power. From a hy- Yours sincerely, https://www.linkedin.com/ Cover: Graeme Williams, Gauteng; Ryan Thomas /AerialShots, Johannesburg: 8, 9, 19; Christian company/voith-hydro Wesser, Heidenheim: p. 16, 17, 18, 29, 35; Graeme Williams, Gauteng,: 10, 11, 12, 13, 14, 15, 20, dropower perspective, Voith is at the forefront 21, 22, 23; Dawin Meckel, Berlin: p. 26, 27, 28; Brian Gartside: p. 44, 45 Kent Kallberg Studios, of efforts to change this. Vancouver: p. 39, 40; U3: Robert Caputo /Aurora / laif To harness Africa’s hydropower potential, https://www.youtube.com/ All other photos are from Voith. financing flexibility, expertise and commitment Uwe Wehnhardt c/Voith_Hydro are all essential. Voith has all three in abun- President and CEO of Voith Hydro

HyPower 2016 | 3 CONTENTS CONTENTS

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AGENDA SETTING FULL LINE SUPPLIER GLOBAL EXPERTISE 39 THE BIG QUESTION: GUEST PERSPECTIVE REPLACE OR REFURBISH? 8 ENERGIZING AFRICA 26 SMALL PROJECTS, 32 STOPPING THE FLOW Why it can pay dividends to 44 CREATING THE How significant hydropower projects BIG RESULTS How an electronic control overhaul old hydropower SAFE WATER BOOK™ in South Africa and Angola are In Asia, a larger number of smaller mechanism for ring gates has equipment, rather than retire it. An exciting water filtering transforming economies and lives. hydropower projects set new standards in precision. innovation could solve the problem could be the key to improving INNOVATION of dirty drinking water for millions. 16 MANAGEMENT INTERVIEW rural power availability. 34 SERVICING AFRICA Voith Hydro's CMO and African When it comes to maintenance, 42 SAFE AND SOUND sales leader discuss the potential 28 MEETING THE LARGE HYDRO it's always better to have local Why a new listening technology is 47 VOITH HYDRO PROJECTS of hydropower in Africa. CHALLENGE resources on hand. Voith Hydro is the best way of monitoring plant A visual summary of hydropower Discover more about Voith through its Hydropower projects so large that investing in developing local operation remotely. projects by Voith in Africa explored other insightful publications. 19 MODERNIZING they can take almost a decade African expertise. in this issue. MOUNT COFFEE to complete require a special set How Liberia's hydropower of skills for success. SUCCESSFUL PARTNERSHIPS infrastructure is being MOUNT COFFEE rebuilt to support rapid economic FROM THE ARCHIVES 35 24/7 MOBILE SERVICE development. In Europe, the Voith HyService Bus REGULARS 30 TRUE SURVIVOR is ready to leap into action 24 GLOBAL TRAINING, The rollercoaster history of the whenever customers need it. CAMBAMBE TULILA 03 EDITORIAL LOCAL BENEFITS Cahora Bassa hydropower plant 06 WHAT’S NEW All over the world, Voith Hydro is in Mozambique. 36 THE POWER TO CHANGE LIVES CAHORA BASSA 07 ON TOPIC delivering training concepts How a convent in Tanzania and the 43 WORLD OF VOITH that meet the needs of individual community it serves are benefitting BOKSBURG 46 5 QUESTIONS FOR … customers. from Small Hydro. INGULA

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VOITH AT HYDROVISION 2016 DRIVING DEVELOPMENT USA The StreamDiver was the focus of a presentation delivered at the recent 2016 HydroVision International event in Minneapolis, In many parts of Africa, the lack of a reliable electricity infrastructure ­Minnesota. Presenter Philip Daus, a Small Hydro engineering project hinders economic development. Hydropower can play a big part in manager at Voith Hydro, said, “Hydropower is among the best solu- tions to energy market challenges, and we are using our technology changing this picture. and expertise to achieve the best outcomes in economy and perfor- mance, both technically and environmentally.” Other important Voith innovation papers presented at the event covered: a rotor rim slot reshaping process for increasing generator longevity; a new analysis and replacement process for damaged Klaus Schädler, Voith, at groundbreaking ceremony. ­turbine thrust collars, which improves monitoring, maintenance and 1 Power is patchy 2 Hydropower potential is enormous repair; a new forecasting method to increase accuracy and improve short-time pumped-storage balancing; and an overview of improved BREAKING NEW GROUND online assessment processes for hydro-components. GERMANY One of the most exciting innovations 645 million being introduced at Voith Hydro in 2016 is the Africans have no access to electricity. 300 - 400 GW construction of a small hydropower plant (called Potential hydropower capacity in 'Alte Bleiche') at the Heidenheim site, to act as a Europe and Africa is similar... demonstration facility for customers, employees and the public. The 35 kW plant will also feed electricity directly into the local grid – enough to Power consumption per head power 100 homes. Construction work started ...but Europe has an installed in Africa in Europe with a groundbreaking ceremony in April, and capacity of 218 GW. Africa has only 30 GW. 1 the plant should be operational by year end. 181 kWh/y 6,500 kWh/y Voith apprentices are involved in the design and manufacturing, and are working to an eco- friendly design – created in cooperation with the Technical University of Munich – that eliminates the need for a new powerhouse. The plant will feature Voith’s new StreamDiver generator unit, recently showcased at a series of roadshows across Latin America. StreamDiver is designed 2 3 for low-head river plants and deployed underwa- ter, eliminating noise emissions, minimizing local 1 Voith exhibition booth. Africa produces 4% 2 Customer event banquet. environmental impact and making small hydro- of the world’s total 3 Bob Gallo, Bill Malus and Martin Andrä at HydroVision 2016. power plants more cost-effective. energy, but is home 218 GW 30 GW to 13% of the global in Europe in Africa 4% population. MORE POWER FOR UGANDA 2015

UGANDA Voith Hydro has been awarded a contract for the Berkeley Energy and customer ARPE Ltd. Commenting on complete design, manufacturing, supply, installation and com- the project, Head of Voith Hydro’s Small Hydro Business Between 2010 and missioning of the electromechanical equipment for the new Klaus Schädler said, “We are happy to be part of the project 2,174 MW Frequent power outages are the norm in across Africa 2015, 2,174 MW of hydropower plant on the Achwa River in northern Uganda. that supports reliable power production and sustainable eco- ­hydropower capacity The plant features four vertical Francis turbines and vertical nomic development in the region. We look ­forward to putting 30 African countries. 2010 was added across synchronous generators with an installed capacity of 42 MW. our ideas into practice, and to foster our collaboration for Africa.­ The project will involve close collaboration between Voith, M/s ­renewable energy in Uganda.”

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ENERGIZING AFRICA

Successful installations at Ingula in South Africa and reliable electricity supply brings Cambambe in Angola illustrate how hydropower light and heat (or relief from it) A to homes and businesses, powers is transforming economies and lives across Africa. machinery, and enables hospitals and schools to function effectively. In a con- tinent as large as Africa, with many countries and political regimes, dis- persed populations, variable transport infrastructure and a wide range of cli- mates and terrains, generating and dis- tributing power effectively is a chal- lenge.

Voith Hydro in Africa Hydropower in Ingula Ingula Installed capacity: 1,368 MW Voith Hydro supports many African na- tions in making the most of their hydro- power generation potential with a wide Bramhoek Dam (lower dam) in winter. A view of the reservoir from the pumped storage range of small and large projects in plant at Ingula in South Africa.

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27 countries. Even so, less than 10% of Africa’s potential hydropower genera- tion capacity of an estimated 400 GW has been exploited to date. Together with its customers, Voith is addressing this opportunity through: new state-of- the-art plants; the repair, maintenance and servicing of existing infrastructure; and the transfer of knowledge to sup- port African countries in running their hydropower facilities self-sufficiently. Two projects in particular, at Ingula in South Africa, and Cambambe in Angola, illustrate the benefits perfectly. 1 3

Ingula pumped storage plant, 2 South Africa Situated in the hills of KwaZulu-Natal in eastern South Africa near the town of 1 Intake structure at Bedford Dam Fuji in Japan. The first of the four tur- as he explains: “The project has involved Ladysmith, the pumped storage plant at (upper dam). bines was handed over to the customer in employing and training local staff to run 2 An operator adjusts the oil filtration Ingula is the largest of its kind in Africa. system. mid-June 2016. The next two turbines the plant once it is completed, which is a Its four underground pump turbines 3 Machine Hall Unit 1 and 2 side, were due for handover in August, and the key part of the service we provide. An- have a total installed capacity of 1,368 ­installation of machine hall ceiling. last by the end of 2016. other important element was our partic- MW. Following the tender process ipation in the Accelerated and Shared launched by South African state energy Keeping the plant cool Growth Initiative for South Africa (As- company Eskom in 2007, Voith Hydro In parallel, Voith has fulfilled the terms giSA). This program is designed to en- was awarded the contract for the provi- of a second contract, awarded in 2011, sure foreign firms invest to help grow sion of the pump turbines, motor gen- for various supplementary systems in- the local economy by sourcing products erators, the main inlet valve, and key cluding cooling water pipes, fire protec- and services from local providers. In ad- systems in September 2008, some 30 tion, fire prevention and an air ventila- dition, we oversaw the construction of years after the government first started tion system for the plant. The latter is new infrastructure, such as good quality planning the project. And it has a key particularly important, as Markus Mül- roads that enabled us to transport mate- role to play in South Africa’s energy ler explains: “Once they are fully opera- rials and people from Durban harbor to supply, as project manager Markus Mül- tional, the four turbines will generate a the plant site.” Not only that, the area ler explains: “Like most countries on the lot of heat, and because they are under- surrounding the site, which includes continent, South Africa suffers from en- ground, that heat has nowhere to go if sensitive wetlands and which has been ergy shortages which hamper its eco- there is no system in place to remove it. used to house the people working on the nomic growth. Ingula is particularly im- We are installing the system, but it will project, will be returned to its original portant because it will begin making its take longer to complete because the state as part of the project. contribution to the county’s power grid “The project has involved employing and four turbines have to be running before Nevertheless, power generation is of in 2016.” it can be fully tested.” course the ultimate goal and here, Mül- Site activities began in March 2012 training local staff to run the plant once ler has one final unique detail to add. and Voith’s international operations col- it is completed, which is a key part of the Customer and community benefits “What is very special about the Ingula laborated to deliver the required ma- Now that the project is nearing comple- site is that all the machines have already chinery. While the turbines were de- service we provide.” tion, Müller can reflect on its success, been producing energy before handover signed by Voith Hydro in Germany, the Markus Müller and the fact that it has delivered many in parallel with the commissioning. As motor generators were supplied by Voith Voith Hydro Project Manager for Ingula benefits beyond pure power production, the demand for power in South Africa

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is so great, that this was a key require- and extend the life of the plant for de- ment from our customer Eskom. It’s cades. The state-owned electricity sup- highly unusual, but I’m delighted that we plier ENE selected Voith as a key player have been able to meet the customer’s in an international consortium to take needs.” on the project. Voith’s remit: to supply the electromechanical equipment and Cambambe I and II, Angola systems, including four 67 MW Francis The contrast between the Ingola project turbines and all the required disman- and the Cambambe I and II sites in An- tling of old equipment and new installa- gola couldn’t be bigger. In the mid- tions. 2000s, following three decades of civil war, the existing Cambambe I hydro- Modern technology for maximum power plant, located 180 kilometers east performance of Luanda and originally commissioned To ensure the best possible results, the in 1963, was in urgent need of rehabili- decision was taken to design a state-of- tation. Although two of the original four the-art hydraulic system for the Francis turbine units were still operating, one turbines, combined with digital and hy- 1 was being overhauled, and one wasn’t draulics governors from Voith. To en- 2 working at all. The decision was taken sure the local area could be supplied Workers measure a generator pit in the to replace all four, in order to increase with electricity throughout construc- powerhouse of Cambambe II. power generation capacity to 268 MW, tion, the turbines were installed sequen- tially. Combined with the control pack- age featuring the digital governor, oil Cambambe supply and pumping groups, pressure Hydropower in Cambambe tanks, main oil supply valves, regulating Installed capacity: 960 MW valves and hydraulic elements, Voith was able to prove the value of its status The Cambambe site is located 180 kilometers east as full line supplier beyond any doubt. of Luanda, the capital of Angola. And when the new plant equipment be- came operational – with an even higher performance than was contracted – the customer was delighted. So delighted in bambe II is so important for the future ment of our commitments were also ex- 1 The Cambambe II powerhouse under fact, that in 2012, they commissioned of the country.” The new run-of-river tremely important.” The first unit was construction. 2 A new generator being installed. Voith to supply equipment for the Cam- plant with an additional four turbines commissioned at Cambambe II in July bambe II project. adds 700 MW of installed capacity, 2016, despite an extremely tough time- bringing the sum total of capacity of line, and the plant with all four units is Expansion that will transform Cambambe I and II to 960 MW. As foreseen to be fully commissioned in a country such, it is a key part of the Angolan’s December 2016. As the client says: Despite the advances that have been strategy to increase power production “From the day Unit 1 started commer- made since the end of the civil war in capacity to 6,000 MW by 2017. cial operation, the power cuts in Luanda 2002, Angola still faces huge political, disappeared. This led to a considerable economic and social challenges, as Pro­ Tailored financing package improvement of the ecological balance ject Manager Patric Kiehlmann has and training due to the reduction of the use of diesel learnt: “Angola is rich in natural sourc- Speaking about the reasons behind the generators.” es, including oil, but the recent lull in oil selection of Voith as the key supplier, prices has had a big impact on the econ- Kiehlmann comments, “Our one face to omy – the government’s income has fall- the customer strategy, and the excellent “Our one face to the customer strategy, as well en by 50%. Private enterprise is very relationship we had built with ENE as a tailored financing package, were extremely limited, and healthcare is very poor. during the Cambambe I project were Economic development, and the jobs key factors. An attractive, tailored fi- important to becoming the key supplier.” and increase in living standards it brings, nancing package and the soundness of Patric Kiehlmann are needed urgently. That’s why Cam- our technological approach and fulfill- Voith Hydro Project Manager for Cambambe

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Just like the Ingula plant, the project “The reliable and stable supply of energy to the population. The even better news is is very much an international affair, with that this will likely not be the end of the the generator being supplied from Swe- the population and industrial sector is a story. Angola has the potential to gener- den, including a four-part stator that was fundamental prerequisite for improving living ate up to 18 GW of hydroelectric pow- put together on site. And just like Ingu- er, most of which remains untapped. la, the project has had its fair share of standards. Renewable energy is crucial for us.” challenges to overcome. Kiehlmann High-level political engagement Ellen Johnson Sirleaf says, “Importing the materials alone President of Liberia In recent years, several high-level dele- took three months, ensuring they were gations from Ethiopia, Liberia and able to handle the tropical conditions, ­other nations have visited Voith in and the bureaucracy involved in orga- Heidenheim to learn about relevant nizing visas for expat employees pre- training center is also planned. As Kiehl- technologies and best practices. On her sented tough challenges. But together mann emphasizes, “Our commitment to visit to Germany in 2015, Liberian with the customer, we overcame these.” Angola is a long term one. Through President and Nobel Peace Prize winner The extension of the Cambambe site training in particular, we will ensure that Ellen Johnson Sirleaf commented, “For is vital for the future of Angola. The con- the benefits of the project are sustainable Liberia as well as many other African struction phase is providing much need- for decades to come.” countries, the issue of energy supply is ed jobs and training and a permanent Despite all the challenges it has an essential item in the national growth faced since the end of the civil war, eco- strategy. The reliable and stable supply 1 nomic growth in Angola has been strong of energy to the population and indus- 2 – over 11% per year up until 2010. The trial sector is a fundamental prerequisite Cambambe II plant will play a signifi- for improving living standards. Renew- cant role in helping the country grow its able energy is crucial for us.” Proof, if economy just as rapidly in the future. any were needed, that hydropower will But perhaps most importantly of all, it play a key role in African economic de- will also help improve the daily lives of velopment for many years to come. //

FINANCING PROGRESS

Hydropower plants such as the ones at Ingula and Cambambe are a capital-inten- sive investment. Financial solutions ease the immediate financial burden by spreading the cost over a long period – especially in developing economies. Voith’s Financial Services subsidiary creates tailored financing concepts in cooperation with private commercial banks and state-backed export credit insurers, which are usually based in the home country of the project’s main supplier. Indeed, Long- term excellent relationships and cooperations with Euler Hermes Kreditversicher- 3 ungs AG in Germany, the Oesterreichische Kontrollbank AG in Austria, and the 4 Nippon Export and Investment Insurance company in Japan, among others, are 1 In the Cambambe II powerhouse: generator covers of the installed the basis for this successful financing support. machines 1 and 2. 2 Installing a turbine shaft in Bernd Rieck, Head of Export and Project Finance, explains: “Our goal is to find the Cambambe II. ­optimal financing solution for every customer that wants to use Voith as a supplier. 3 Damjan Vucko, Head of Every concept is customized to specific customer needs, based on local variables, ­Operations at Voith Hydro, project details, the customer’s financial situation, and the so-called Voith Sourcing at Cambambe II Matrix, which analyzes the supply chain.” 4 Installing the intermediate shaft at Cambambe II with view of the thrust bearing and distributor Customer benefits underneath. • Additional financing sources. • Long payback periods. • Attractive financial conditions at advantageous interest rates. • Planning security for financing across the complete project timeline.

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“We are developing our new Africa concept because we are positive that the African continent has tremendous development potential.” Heike Bergmann Senior Vice President Sales Africa

How did a renewed push to develop power plants. The following compari- sales in the African market become son illustrates what we are talking part of your agenda? about. The hydroelectric capacity cur- Martin Andrä: We are implementing rently installed on the entire continent is this new strategic drive because we are equivalent to the installed capacity of convinced that Africa has very good fu- Norway. However, we think another as- Heike Bergmann and Martin Andrä in discussion. ture prospects and we need to tap into pect is also interesting: In Africa, we are these opportunities. In Sub-Saharan seeing a trend in which countries skip ­Africa, many countries have economic over the fossil fuel-based and nuclear growth rates of five percent and higher. power generation phases that are typi- Heike Bergmann, Senior Vice President Sales Africa, These countries need to be supplied cal of the industrialization process, and Voith Hydro with reliable power so they can further enter ­directly into electricity production pursue their social and economic devel- from renewable energy sources. The opment. opportunities to make that happen are in place. Right now, Africa’s untapped Heike Bergmann: I want to re-empha- potential for hydroelectric power plants OPPORTUNITY size that. We are developing our new amounts to between 300 and 400 Africa concept because we are positive Gigawatts. that the African continent has tremen- dous development potential. One also Does Voith have anything to offer to has to consider that in some African this market? countries, only 20 to 25 percent of the Bergmann: Yes, absolutely. On my dele­ KNOCKS population has access to electricity, gation visits, I keep seeing that power and power outages occur on a regular plants built in Africa by European com- basis. The latter presents an impedi- panies are held in high regard. Euro- Voith is investing in its sales programs in Africa. Martin Andrä, Chief ment to all industrial companies and pean technology can serve as the thus also to economic development. backbone of the African economy, and Marketing Officer, and Heike Bergmann, Senior Vice President Sales Africa, that includes Voith, whose hydropower discuss Voith Hydro's future strategy across the continent. Can you give us a rough estimate of technology has been used on the conti- the demand for power plants? nent for about 100 years. Africans value Andrä: There is a huge demand for new the quality and longevity of our prod-

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“To win projects in Africa, it’s impor- tant to offer financing solutions.” Martin Andrä Chief Marketing Officer

ucts. They want our technology, but few. Our footprint literally extends over need support in financing it. the entire continent.

What does that mean for a technology What do you attribute that to? supplier? Bergmann: It’s based on the excellent Andrä: To win projects in Africa, it’s im- quality of our products and services, as portant to offer financing concepts and well as the fact that we keep working Martin Andrä, Chief Marketing Officer, Voith Hydro solutions. One of Voith’s advantages with our customers after a plant is com- MODERNIZING that benefits our customers is that we missioned. We provide extensive train- can offer tailored financing solutions for ing for power plant operators and we projects. That’s why we work with pri- have our own network consisting of vate commercial banks and govern- maintenance facilities. mental export credit insurance compa- MOUNT COFFEE nies throughout the world. Andrä: We have always offered training programs and courses with our plants, Where can one find Voith Hydro tech- and that has helped us establish a very A significant hydropower plant nology in Africa? good reputation in Africa. Now, we want modernization project is helping he digital age is finally reaching Liberia’s Mount Coffee Bergmann: There is a long list of Afri- to use our new concept to generate to improve Liberia’s power hydropower plant, thanks to Voith and its pivotal role in can hydropower stations equipped with added value for customers by providing T this historic project, together with other international Voith technology. Installations extend solutions customized to their respective infrastructure following years companies. Built in the 1960s, this plant on the Saint Paul River­ from Aswan in Egypt to Drakensberg in needs. We have a global network and of civil war. was the West African nation’s largest at the time, but sustained South Africa. For example, Voith tech- are able to combine system compo- extensive damage during the civil war (1989-2003). And the nology is installed at Gilgel Gibe (Ethio- nents from Europe, Brazil, India, and path to ruin continued when looting ravaged the electrical and pia), Inga (Democratic Republic of Con- China with corresponding financing so- mechanical components, leaving only parts of the dam and the go), and Cahora Bassa (Mozambique). lutions. In this way, we can create the steel penstock intact. This proved to be a huge setback to the New projects include those at Cam- right package of technology, training, country’s economic and social progress, leaving Liberia’s capital bambe (Angola), Mount Coffee (Liberia), service, and ­financing for any operator, city Monrovia reliant on costly, non-renewable diesel-power and the pumped storage power station regardless of their location and the size Dam wall under construction on the Saint Paul River, generation to meet its energy needs from 2006 onwards. in Ingula (South Africa), to name just a of the ­hydropower station. // with the powerhouse on the right.

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“At the customer’s request, Voith took on the challenging task of opening the spillway gates without causing any damage to the civil structure and components. All ten gates were reopened ahead of schedule.”

Harry Kathirvel 1 Project Manager Voith Hydro 2

3

4 Mutual trust is the prerequisite Kathirvel: “At the customer’s request, Voith took on the chal- Trust in Voith’s long-standing presence and vast experience on lenging task of opening the spillway gates without causing any the African continent was key to its selection by the Liberian damage to the civil structure and components. All ten gates Electricity Corporation (LEC) to rehabilitate the run-of-river were reopened ahead of schedule.” plant in 2013. Now, the huge task of successively installing Poor road conditions between the site and the Port of four new Francis turbines and generators equipped with con- Monrovia, which is about 25 kilometres away, posed a chal- trol technology, a 95-ton overhead crane, as well as the auxil- lenge to the transportation of sensitive equipment. Not only iary electrical and mechanical plant equipment is nearing com- that, the heavy rain from April to October further disrupted pletion. The plant is scheduled to commence operations in late operations. This meant that for certain plant systems, Voith 2016. had to commence with the design and manufacturing phases Financed by the Liberian and Norwegian governments, early enough to complete local transportation during the dry 1 Reservoir at the Mount Coffee hydropower plant in Liberia. the European Investment Bank, Germany’s KfW Bank, and season. The thorough and detailed work plan that addressed 2 The local community will benefit significantly. the Millennium Challenge Corporation of the US govern- all these challenges resulted in a flawless execution of the en- 3 Installation work at the Mount Coffee ment, the modernized units are forecast to raise power output tire supply chain, without a hitch. powerhouse. 4 Julia Holder, Field Service Engineer, to 88 MW, a 33 percent increase on the plant’s capacity in the Voith Hydro. 1960s. As a result, Monrovia’s population of over one million Road survey and simulation run for powerhouse crane will have access to reliable, clean and renewable energy. transportation One of the major hurdles that had to be factored in during the Acknowledgement by the President Overcoming significant challenges local transportation of the 95-ton powerhouse crane was a Bai- Voith’s long working tradition in Africa dates back to the However, the path towards rehabilitation has had its fair share ley bridge. Given its rusty condition, doubts arose about its 1950s, a factor that helped build up trust at the start of the of obstacles, such as the condition of ten spillway gates that structural integrity, and whether the bridge could withstand project. Together with the customer, LEC, a cohesive, vital, Mount Coffee were destroyed during the civil war. The operating mecha- such a heavy load. Furthermore, using an existing alternative one-team approach has been adopted. nisms to open the gates had been destroyed, leaving the pow- bridge that was being renovated was out of the question. To Moreover, not even unpredictable events such as the Hydropower in Mount Coffee erhouse flooded. Keeping the powerhouse dry became impera- prevent any risk to the powerhouse crane equipment, Voith spread of the Ebola virus in 2014, and a high incidence of ma- Installed capacity: 88 MW tive, and that meant reopening the gates so that a cofferdam carried out a thorough road survey and simulated transporta- laria in the team later on have thwarted the rehabilitation could be built to prevent water flowing into the powerhouse. tion over the bridge using dummy cargo. Based on the simula- works, which are on schedule, as Franz Bayrle, Site Manager, The Mount Coffee site is situated near the This daunting task was a major milestone in the reconstruction tion results, significant measures were implemented to ensure explains: “This year, we have had 35 cases of malaria in my Liberian capital, Monrovia. of the Mount Coffee power plant, says Project Manager Harry the bridge was up to the task. team alone. But work within the culturally diverse team who

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“Voith is supporting Liberia with an CONTINUOUS important step in the fight for the development of the Liberian COLLABORATION economy.” GIZ supports the German government and Ellen Johnson Sirleaf President of Liberia other organizations in executing energy generation projects in Africa and around the world.

hail from Liberia, Pakistan, Indonesia, Germany, Norway The energy department of the German Association for International and Sweden, is going well. I’m very pleased with them. They ­Cooperation (GIZ) supports the German Federal Ministry for Economic have all fitted well into the work schedule.” Their performance Cooperation and Development and other organizations in identifying, 1 was even acknowledged by the President of Liberia, Ellen ­financing and executing new energy generation projects in over 120 rap- Johnson Sirleaf. When visiting the Voith headquarters in 2 3 idly developing countries. Projects using renewable energy sources such Heidenheim last year, President Sirleaf, who is also Liberia’s as hydropower are very much in focus, as Jens Burgtorf, Head of Nobel Peace Laureate, said: “I am delighted that Voith and ­Technology ­Cooperation for the Energy Sector at GIZ, explains. LEC have found a secure and pragmatic way for the further development of the project, despite the recently overcome Eb- How have energy projects in developing countries changed in ola epidemic. With this, Voith is supporting Liberia with an recent years? important step in the fight for the development of the Liberian “Today, our clients want integrated energy generation concepts that are economy and combating national poverty: with the repair of CO neutral. That’s a significant and very positive change but it also brings ² the Mount Coffee power plant, one of the key facilities in the challenges. Specifically, power supplied from some renewable sources Liberian energy supply network is being reconstructed.” such as solar and wind power is unpredictable. If the sun doesn’t shine, Another interesting aspect of the project is the contribu- or the wind doesn’t blow, power can’t be produced.” tion of the project’s female engineers, in an industry where women are under-represented. Julia Holder, Field Service En- How important is hydropower in this context? gineer, comments, “There is definitely a collaborative working “Hydropower's advantage is that it is stable. Pumped storage plants are atmosphere at Mount Coffee, and all the staff are friendly and particularly important because they can store energy that can be used to helpful. The fact that myself, two Norwegian engineers and fill the gaps when solar and wind resources fall short. In other words, many of the local staff are women is not really an issue. We hydropower can form a core, stable power supply that can then be have a good team spirit and always support each other.” extended through solar and wind-based power.”

The final steps to success How does this relate to Africa in particular, and what are the challenges? On completion, the modernized plant will be fitted with “Hydropower is very significant in Africa because the continent is so large, Voith’s automation system, including a digital governor and and the grid infrastructure is so patchy, especially in rural areas. In every state-of-the-art control system. The training of skilled person- 1 Mount Coffee powerhouse under project, protecting and enhancing the livelihoods of the communities construction.­ nel is already underway and the first team of new LEC em- 2 A lathe machine operator inside Voith's on- ­affected, and ensuring enough water is available for multiple purposes are ployees being trained for eventual operation and maintenance site workshop. paramount. We work closely with all the parties involved to ensure that.” of the plant will arrive in Heidenheim in fall 2016 for further 3 Final adjustments being made to the generator.­ instruction. This is where they will become familiar with the What is the future for hydropower in Africa in your view? design software, and gain in-depth exposure to the scope of the “Small, localized hydropower projects that bring energy to people outside Mount Coffee plant, its machinery and workings, while the the large population centers and which use existing infrastructure will play finishing touches are being applied to this mammoth project an important part because they minimize the capital investment required. on site. Thanks to Voith and its project partners, it will fulfil They can also be completed faster, so people benefit from the power they President Sirleaf’s mission to improve the reliability and scope generate more quickly.” of Liberia’s electricity supply. //

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neers might notice signs of operational errors affecting the components they are replacing, and suggest some extra GLOBAL courses to get on-site engineers up to speed. In the case of a completely new plant designed and installed from scratch, Voith can offer more detailed and intensive training. This covers each technology, how it works and how it is TRAINING, integrated into the plant as a whole, then moves on to how to look after and maintain the components correctly. Many organizations opt for extra train- ing to ensure they’re getting the best value and most reliable service out of LOCAL their installation.

Market maturity levels define needs Aside from the technical aspects, Voith HydroSchool training is structured dif- BENEFITS ferently depending on market maturity. North America and Europe are mature Voith is committed to the transfer of in-depth markets, where refurbishment of very old plants is key, and where the im- technological knowledge and skills to local pending retirement of baby-boomer employees, thereby securing the successful ­engineers makes knowledge transfer operation of hydropower plants for generations important. These markets are served well with public courses where several to come – in Africa and around the world. customers attend the same course. The Chinese market is younger – with 25-year-old hydropower plants where Customer staff members in a training Liberian capital, Monrovia. However, it from hydropower in combination with the “original” engineers are still working session at the Cambambe II hydropower was damaged during the course of two skilled engineers on site can really plant, Angola. and are actively training younger staff. civil wars. Liberia had been dependent strengthen the economic and social Here, operators can book seminars for on expensive diesel-generated power fabric of countries like Liberia.” staff with Voith’s subject experts to top since 2006, and Voith was tasked with up their knowledge. In contrast, Africa is renovating the plant, which is due to be More African projects underway a greenfield market with a lack of skilled put into service at the end of 2016. The Voith HydroSchool will also provide engineers. “In these cases, our training Voith developed special courses that training services following the implemen- With less than one in three Africans ity in the long run, which is a decisive fac- program can ensure a skilled work- ­Liberian engineers will complete before tation of the Cambambe II project in having access to electricity, it’s clear that tor for economic and social development. force,” comments Cherie Ferrari, Man- the plant is commissioned, an aspect ­Angola, and the Inga I installation in the there’s an urgent need for efficient pow- ager of Customer Education and Train- that proved to be of great interest to Democratic Republic of the Congo. er plants across the continent. But even Flexible approach to accelerate ing at Voith. “We often design ­Liberian President Ellen Johnson Sirleaf Cherie Ferrari adds: “Along with techni- the most modern hydropower plants progress completely customized courses tailored and her energy minister, Patrick Sendolo, cal training, we can also deliver mentor- can’t simply run themselves – they need Every project is different – in Africa, as it to the plant operator, staff, project and when they visited Voith headquarters in ing. At a recent pole replacement project teams of skilled people to manage and is everywhere else. That’s why the Voith even the actual equipment in use.” May 2015. “We’re looking forward to in Mozambique, we simply ‘shadowed’ maintain them. That's why Voith pro- HydroSchool offers a wide range of welcoming Mount Coffee engineers local engineers and helped them with vides training to the African companies training options. Hydropower plant op- Mount Coffee: challenges overcome to the HydroSchool training center some tips and tricks. That’s the main and governments who own and operate erators can order a selection of training The Mount Coffee project in Liberia is a in Heidenheim this fall,” notes Cherie point about the HydroSchool – training is the plants. Voith’s HydroSchool contrib- modules as part of their installation or case in point. This hydropower plant, ­Ferrari. “This project is an excellent always exactly what each individual cus- utes to the reliable production of electric- refurbishment project. Or Voith engi- built in the 1960s, is located close to the ­example of how reliable electrification tomer needs. One size doesn’t fit all!” //

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1 Manufacturing small hydro turbines in Vadodara, India. SMALL PROJECTS, 2 Local technician inspects turbine quality. BIG RESULTS

Small hydropower installations are often the only practical and economic option – but their impact can still be significant.

A coastal country on the Indochina in Quang Ngai province and southwest Peninsula, Vietnam is one of Southeast of Quang Ngai City, the scope includes Asia’s fastest-growing economies. The supplying a complete set of equipment country’s numerous rivers are an impor- 1 for two powerhouses in cascade forma-

tant transportation route with over 2 tion – Son Tra 1A and Son Tra 1B. The 17,700 kilometers of navigable water- 30-4 Quang Ngai Joint Stock Company ways – and they are also an important is developing the project. source of renewable energy. Vietnam has a theoretical hydropower potential Serving all of Asia of approximately 300,000 GWh annual- Voith’s manufacturing facilities in Vado- ly, 100,000 GWh of which is economi- in the Tu Mo Rong District. The con- PROJECT CAPACITY dara serve India, Nepal, Bhutan, Indo- cally viable. Until recently, just 15,211 tract’s scope involves the supply of tur- nesia, Laos and the Philippines. Dakpsi 2B 2 x 7 MW MW had been installed, leaving plenty bine and generator, automation, E-BOP, For instance, in April 2016, Voith Dak Ter-1 2 x 1.8 MW + 10 % COL of room for growth. M-BOP and supervision of installation commissioned the Kurhed project in Dak Ter-2 2 x 1.7 MW + 10 % COL and commissioning the project. The ­Himachal Pradesh, India; the installa- Thanh Thuy-1 2 x 6 MW + 10 % COL Small hydro success in Vietnam system and component engineering of tions at Behna and Gullu are slated for As part of the new Renewable Energy the turbine was undertaken by Voith’s Alin B1 commissioning in late 2016. hydroelectric Development Strategy 2030, unveiled local engineering center, and the tur- project 2 x 23 MW + 10 % COL Meanwhile, in the Philippines, the in December 2015, the Vietnamese bines were manufactured in Vadodara, Son Tra 1A 2 x 18 MW Lake Mainit project is being built on the government has prioritized renewable India. This was the first pilot project us- northeastern section of the island of Son Tra 1B 2 x 18 MW energies and plans to increase hydro- ing the cost-effective Standard Small Mindanao. Voith has also supplied the Kurhed 2 x 2.25 MW + 10 % COL power generation from 56 TWh in 2015 Hydro Automation Scheme. This electromechanical equipment for Asiga, Behna 2 x 2.5 MW + 10 % COL to 90 TWh in 2020. Voith Hydro Private scheme combines the functions of digi- menced in April 2014, and since com- Voith was also chosen to work on also located in Mindanao. Gullu 2 x 12 MW + 10 % COL Limited, based in Vadodara in north- tal governor, control system, and exci- missioning in September 2015, both Dak the Alin B1 hydroelectric project in And in Indonesia, the supply of west India, which launched in the Viet- tation and protection system in one Lake Mainit Ter-1 and Dak Ter-2 have been perform- March 2016, following a tough bidding equipment for the Semangka project is project 3 x 8.333 MW + 10 % COL namese market in 2011, is supporting common panel, and delivers it within a ing to the customer’s full satisfaction. process. Located in the A Luoi and underway, as well as installation of the Asiga 2 x 4 MW the country in building and renewing its compact solution. Both units in the A contract for Thanh Thuy-1 was Phong Dien districts, this is the com- turbine components. The project is due hydropower infrastructure, which fea- project were handed over to the cus- Semangka 2 x 28.3 MW + 10 % COL signed in May 2015 with twin-jet Pelton pany’s seventh successful Vietnamese to be commissioned in 2017. tures a large number of relatively small- tomer in February 2015, leading to a turbine generating sets and complete project, which is being developed in co- Importantly, all of Voith’s activities scale installations. This commitment is third project, Dakpsi 2B, being recently water-to-wire scope. Thanh Thuy-1 operation with Truong Phu Hydropower in the region are driven by close cus- reflected by numerous already commis- awarded to Voith Hydro. ­Hydropower Joint Stock Company Joint Stock Company. tomer relationships, and regular face- sioned projects and others which are Meanwhile, the contract for Dak ­selected Voith to deliver all the power And finally, another recent impor- to-face meetings between customers currently underway. Ter-2, which is in the cascade of the plant equipment at Haiphong port with- tant milestone was the securing of a and senior Voith managers. This dem- Dak Ter-1 was the first project com- Dak Ter-1 project and on a similar scale, in 14 months of the commencement contract for the Son Tra 1 project in April onstrates the company’s commitment missioned by Voith in Vietnam, located was signed in October 2013. Work com- date, followed by commissioning. 2016. Located on the Dak Se Lo River to hydropower projects of all sizes. //

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Preparing a bid for a large hydro- laboration,” adds Bulota. It was a real power facility is a major project in its marathon, but it paid off in the end!” own right. It requires patience, attention to detail, and investment. According to A strong foundation for success Björn Reeg, Voith Hydro’s Head of Pro­ On the other side of the world, another ject Management, constructing a scale large-scale project is taking shape that prototype of the plant is often the first also relies on close collaboration. The step. “The miniature version helps us to Wudongde hydropower station is the optimize and to achieve the required fourth largest in China and its turbine performance and efficiency.” The team generator units will be amongst the assesses the project’s technical feasi­ largest worldwide in terms of power bility and finds the right balance be­ output. Zhang Min, project manager of tween efficiency, longevity and perfor­ Voith Hydro Shanghai for Wudongde, mance. echoes the experience of Björn Reeg Working on a project that takes a and L­aurent Bulota. “We won this pro­ decade to complete is normal for Reeg and his team. “The assessment pro­ “Outstanding change management skills and cess takes time, because there are so many factors – the country and its regu­ reacting quickly to unexpected events are vital, lations, the plant’s location and logisti­ because unpredictability is a given.” cal needs, and all the technical and Björn Reeg customer-related specifics. The longest Head of Project Management, Voith Hydro project I’ve worked on was Iberdrola’s La Muela II installation in Spain – it took Voith Hydro in Montreal. “Several of the ject ­because we built a good relation­ eight years! Even after all that time, customer’s criteria were soft factors like ship with the customer and because we 1 ­despite some delays outside of our customer references and methodologi­ had ­access to global expertise from 2 control, the customer was delighted cal details.” The team then performed across the Voith Group,” he says. with the project management. I’m very several simulations to optimize the bal­ In fact, the recipe for success in proud of that.” ance between the units’ performance, large hydropower projects is quite simi­ “I think there are four key criteria for the amount of rock to be excavated out lar wherever the site, as Zhang con­ ­ensuring the success of a large-scale of the river and the Amount of concrete cludes: “This project is already pro­ MEETING project,” says Reeg. “A good relation­ in the plant. The entire offer process gressing well and we are very focused ship with the customer is probably the took over three years, culminating in the on achieving the best result for the cus­ most important – without that, every­ contract signature in March 2016. tomer. Diligence, confidence and great thing else is more difficult. Outstanding “When BC Hydro awarded us the con­ teamwork: that’s the secret to succeed­ THE LARGE change management skills and re- tract, they thanked us for the close col­ ing in large projects.” // acting quickly to unexpected events are also vital, because unpredictability is a given. Thirdly, leadership skills, espe­ HYDRO cially the coordination and manage­ ment of multinational and multicultural 1 The cavern of the world's third-largest hydropower plant at Xiluodu on the Jinsha teams. And of course, quality – our River, China. Voith delivered three of the ­reputation depends on it.” CHALLENGE 18 machines for the site, which has a total capacity of 13.86 GW. 2 A Voith employee inspects the installation Close collaboration Today, major hydropower projects involve to ensure maximum quality. In Canada, a project for BC Hydro at Site C, a large-scale plant on the Peace combining components that arrive from River in British Columbia, provides a all over the world. Optimizing speed, good example of transferring this theory quality and cost-efficiency is a tough into practice. “We set up a project team Iberdrola’s La Muela II installation in Spain to work solely on this offer,” says took eight years to complete. balancing act. ­Laurent Bulota, Head of Proposals at

28 | HyPower 2016 HyPower 2016 | 29 FROM THE ARCHIVES FROM THE ARCHIVES

plans for the construction of an irrigation system to serve technique was developed for this: high-voltage direct-current huge agricultural areas. A total of 15,000 km² was supposed to transmission. With this new technique, the engineers were able be harnessed for the cultivation of fruits for export. And the to cut the transmission costs in half. TRUE revenue generated from this was intended to boost economic development. Independence without peace However, there were also dissenting voices and protests. In April 1974, the “Carnation Revolution” in Portugal ended The Mozambican freedom movement Frelimo, which had the Caetano dictatorship and also paved the way for the inde- SURVIVOR been fighting for political freedom from Portugal since 1964, pendence of the colonies. Mozambique became independent criticized the project, as did various student movements across in 1975. Frelimo became the ruling party and began to support Europe. Their argument was that Cabora Bassa would only the construction of the power plant. The first expansion stage “Cabora Bassa” – a name that demands benefit the apartheid regime in South Africa and the dictator- with 1,224 MW capacity was completed as planned and the superlatives: a 164-meter-high dam wall ship in Portugal. During the construction and installation pe- hydropower plant began commercial operation on 26 March on the Zambezi River; a 250-kilometer- riod, civil war and violence dominated the country. The con- 1977. In June 1979, the last expansion stage was completed struction site and the camp, which housed more than 3,000 and Cabora Bassa was finished on schedule after 10 years of long reservoir lake; a 1,500-kilometer-long engineers and construction workers at the time, had to be se- construction. high-voltage line between Mozambique cured by the military. The political turmoils on the Zambezi, however, were not and South Africa; and a total power output over yet. Now the guerrilla movement Renamo, supported by Technical innovation lowers costs the South African apartheid regime, began fighting the Marxist- of 2,075 MW. In the meantime, the engineers were mastering technical chal- Leninist Frelimo government. What followed was a bloody, lenges. They erected a six-kilometer-long overhead line from 16-year-long civil war. Around 900,000 people died and 1.7 mil- the platform at the cavern surface to the Songo plateau 600 me- lion fled the country. Renamo also repeatedly attacked the infra- ozambique was still a colony when the tender was ters above it, and connected it to a three-phase current substa- structure at Cabora Bassa, which became a ruin. Only in 1997, sent out for the construction of a hydropower plant tion and a converter station. Here, 220 kV three-phase current after the end of the civil war, was Cahora Bassa (as it is spelled M on the Zambezi River in November 1967. The Por- was converted into 533 kV direct current for transport. A new today) repaired and returned to operation. // tuguese “Minister for overseas territories” was planning “Cab- ora Bassa” as the largest hydropower plant in southern Africa. 1 Manufacturing the turbines for Cabora Bassa Five turbines were meant to generate the electricity that was at the factory in Heidenheim. largely intended to be sold to South Africa. For electricity 2 The efforts of local workers were key to The spectacular dam on the Zambesi following transmission, a 1,500-kilometer-long high-voltage line was completing the plant on schedule. completion in the late 1970s, before it was ruined 3 New roads and tunnels were constructed to provide during the civil war. built between the site and Pretoria. easier access to the dam site during construction. In September 1969, roughly two years after the tendering process began, the contract for the underground hydropower plant was awarded to an international consortium that includ- TECHNICAL DATA ed Siemens,­ Voith, AEG, BBC and the construction company Hochtief – all German companies. Voith provided the five 5 Voith Francis turbines with 415 MW each; turbine runner diameter: 7 m Francis turbines for Cabora Bassa. While the turbines were being constructed in Heidenheim, robust roads and bridges Dam Wall: were built in Mozambique so that machines and equipment height: 164 m could be transported to the construction site. On the high 1 width at the base: 23 m ­plateau, a runway for propeller-driven aircraft was built, and 2 3 the region was equipped with a new telecommunications and width at water level: 4 m telex system. 103.5 METERS HEAD Ambitious goals versus critical voices 5 generators with 480 MVA each; The Cabora Bassa construction site was situated at the end of rotor diameter: 13 m a gorge that is 18 kilometers long, 250 meters wide and 700

meters deep. Ambitious goals were attached to the construc- Cavern: length: 220 m tion of the reservoir and power plant. The Zambezi had been height: 57 m made navigable over a length of 320 kilometers in order to al- low for the transport of natural resources such as coal, iron, width: 29 m titanium, manganese, chromium and bauxite. There were

30 | HyPower 2016 HyPower 2016 | 31 GLOBAL EXPERTISE GLOBAL EXPERTISE

Essential stopping power ring gate, and the static and dynamic STOPPING THE FLOW In some situations, such as a unit stand- forces that are created, is essential for RING GATE PRESSURE DISTRIBUTION ¹ still or emergency failure, the flow of wa- calculating the dimensions required for By controlling the movement of ring gates electronically, ter through a Francis turbine must be the space between the ring gate and its stopped. The distributor and wicket housing, and the forces that the differ- Voith is ensuring the water flow through large turbines gates act as a regulating and stopping ent components must be designed to can be stopped more effectively when required. device, but to reduce leakage and deal withstand. Maximum reliability and con- with a distributor failure, a second de- trol are essential.” vice is used – usually a spherical or but- terfly valve. However, fitting these valves Precise electronic control The ring gate is to very large Francis turbines is imprac- In the past, ring gate movement was lowered through its housing by the tical, because the size of the valve re- controlled mechanically, with several p_upstream electronically con- quired makes them too heavy and diffi- spindles connected by a chain that en- trolled servomo- cult to transport and install. This is why sured they rotated at the same speed. p_downstream tors. The pressures above and below spherical valves are only manufactured However, this solution was sub-optimal, the ring gate must Voith has been successfully manufac- up to a diameter of not much more than as Thomas Neidhardt, Voith’s Head of be equalized. turing and installing the ring gates that three meters. In addition, butterfly Turbine Basic Engineering explains: stop water flowing through large Fran- valves, which can be built to a larger “The mechanical system was labor-in- cis turbines for over 20 years. It is also size, can hinder the flow of water when tensive and expensive, and was less responsible for the key innovation in they are open and therefore reduce the reliable than customers wanted. That’s that time – electronic control of the effectiveness of the turbine. The solu- why we developed an electronic system

opening and closing mechanism. tion, when appropriate: the ring gate, a to control odd or even numbers of oil- p_garage The pressure in the compact steel cylinder that is lighter, driven servomotors that raise and lower ring gate housing easier to transport, and can be put to- the ring gate. It’s a more efficient, pre- (garage) is deter- mined by the de- gether on site. It also allows water to cise and reliable solution when custom- sign and size of the flow freely through the turbine when ers decide to use a ring gate.” p_upstream gaps (deliberate open, enables a tight seal when closed, control of the pres- p_downstream sure differentials p_lip and eliminates leakage through the dis- High demand from China through leakage tributor and the associated erosion it The first installation of the electronically flow regulation). causes. This ensures full turbine effi- controlled system was in 1999 at the ciency, and prevents loss of energy Xiaolangdi plant in Jiyuan, Henan Prov- when the ring gate is closed, thereby ince, China. Since then, it has been saving the plant owner money. ­refined and installed at six other large hydro plants in China. The largest of A tough engineering challenge these, installed at Xiluodu, is around Designing and installing a ring gate and 10 meters across. “Our customers in There is a strong the mechanism that moves it is a real China demand the highest standards, suction peak at the bottom as the ring challenge, as Dr. Alexander Jung, Head and require the ring gates to be easily gate closes. The of Turbine Development Methods, ex- and completely closed in full flow condi- design and precise p_upstream plains: “Opening and closing a ring tions, even with a failing distributor. position of the seal p_downstream prevents leakage gate requires the balancing of pressure That’s why they prefer our electronically and unintentional above and below the gate. Understand- controlled system. They say they have opening.

Ring gates (here in red) provide a useful addition for large Francis turbines, ing the relationship between the speed never seen another that is so precise,” where a spherical or butterfly valve would be too large. and pressure of water flow through the confirms Neidhardt. // ¹ simplified schematics

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Originally from Winnipeg, Manitoba, SERVICING AFRICA in Canada, Randal Enns has invaluable experience working on hydropower Voith is investing in local African service personnel, to projects in Africa. Appointed to the role as Managing Director of Voith Hydro in provide hydro customers with rapid support across South Africa in January 2016, one of the continent. his most important current tasks is to build a service team with the potential to cover small hydro installations across the continent. “Of course, there are some countries we don’t focus on, due to safety and security issues, or simply because the northernmost countries in Africa are actually closer to Europe than we are. However, the clear aim this year is to make sure Voith can start covering as many service require- ments as possible for our customers with a locally based team,” says Enns. By the end of 2016, Enns’s team will consist of two service engineers and two sales engineers. He com- ments: “Our principle task is to estab- lish our presence with potential clients, who will be dependent on the talents of the team in Johannesburg.” “We spent some time working with the Chattanooga division, and they The HyService Bus, packed with tools and helped us plan what equipment we the experts to use them, is ready to go to the might need,” Enns explains. “What aid of Voith customers all over Europe. we’re trying to do is anticipate the work that we’re going to get over the next few years and have the equipment ready.” This means that for the rest of 2016, the team is purchasing “machin- ing tools,” to machine typical compo- 24/7 MOBILE SERVICE Randal Enns, Managing Director, Voith Hydro in South Africa nents for refurbishments, along with tools for workers. When its customers in western Europe have an issue, Voith work as quickly as possible. As soon as a call comes in, Philipp This preparation will help ensure Hydro springs into action, thanks to the HyService Bus. The or a colleague is ready to jump into the van and go. And, with Voith customers in Africa can benefit brainchild of Florian Philipp, Engineer After Market Business, 40,000 kilometers traveled since its introduction in summer continuously from Voith’s expanding ca- the specially converted Mercedes van contains every tool and 2015, the HyService Bus has already fulfilled the urgent servic- pabilities. Enns concludes: “As time instrument required for hydropower machinery servicing. Each ing needs of Voith customers all over the region. It has been so goes on, we will develop our capacity item is intelligently and securely stored, but still easy to access successsful that another service bus has already been ordered. to serve customers optimally with offers for Philipp and his four colleagues, ensuring they can get to All Florian Philipp needs to know now is: where to next? // and implementation, and develop spe- cialisms as customer needs dictate.” //

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1 2

1 The run-of-river plant at Tulila. 2 The new machine unit on commissioning day.

It’s difficult for many of us who live in for their needs – so much so, that fol- “Before the plant was built, the power was industrialized nations to imagine daily lowing the death of Fuchs, his daughter THE POWER TO life without instant access to electricity. asked Albert Koch, a family friend, hy- ­unreliable. Life is just so much easier for But even in 2016, living without a regu- dropower expert and private investor, lar power supply is still a reality for hun- whether he could take a look at the site everyone now.” dreds of millions of people. Until the and come up with ways of using the full Sister Yoela Luambano Benedictine Sisters of St. Agnes, Chipole Convent, Tanzania CHANGE LIVES turn of the 21st century, it was also a potential of the plant. What happened fact of life for the 370 Benedictine next turned out to be much more trans- Sponsored small hydro projects have transformed the ­Sisters of St. Agnes at the Chipole formative than anyone involved could ­Convent in the Ruvuma district of have imagined. thusiastically assumed much of the re- multi-million-dollar personal investment lives of the Benedictine Sisters of St. Agnes in Tanzania southwestern Tanzania. All the more sponsibility for the project, it became from Koch, and a loan financed by and the local communities they serve. astonishing given that they have devot- Thinking bigger clear that she would be able to secure Credit Suisse Bank and insured by ed their lives to supporting the local By the time Albert Koch arrived in water rights from the government for a Swiss Export Risk Insurance (SERV), population with health, educational and ­Chipole, the sisters had bought a corn second plant, if a suitable location could the project quickly became viable. ­social services – without receiving any- mill which was enabling them to make be found. After­ a couple of false starts, thing in return. full use of the power available to them. they found what they were looking for Construction begins But so inspired was he by the commit- within a few hours drive of the convent With all the financing and licenses in Small beginnings ment of the sisters and their willingness – a cascading river in the Tulila region. place, construction on the run-of-river­ Tulila Around 15 years ago, Swiss benefactor to work unpaid, he decided to investi- With the location identified, the plant, featuring an earth-filled dam and Hydropower in Tulila Robert Fuchs used his foundation to gate the possibility of a larger plant that next challenge was financing. Fortu- weir, could begin. The plant was to be Installed capacity: 5 MW build a small 400 kW hydropower facili- could potentially transform the financial nately, the state-owned electricity sup- powered by up to three double regu- ty at the convent, to ensure the sisters situation of the sisters and the lives of plier Tanesco was already planning to lated Kaplan turbines and electro­ The Tulila site is located near the town of Songea had a reliable flow of electricity. The fa- the local population. After consulting purchase power from external sources mechanical equipment, all supplied by in southwest Tanzania. cility proved to be more than adequate with Sister Yoela Luambano, who en- to feed the main grid. Combined with a Kössler, a subsidiary of Voith in ­Austria.

36 | HyPower 2016 HyPower 2016 | 37 SUCCESSFUL PARTNERSHIPS SUCCESSFUL PARTNERSHIPS

In addition, Swiss consulting firm phase was very much a team effort, The plant must serve the local grid cov- AF-Consult (formerly ITECO), which with the sisters themselves providing ering the rural surroundings, and the THE BIG QUESTION: had already been involved in project support with import and customs for- turbines must keep running at minimum planning, took overall charge of the re- malities and logistics coordination, and performance in outage situations, in the alization phase, right through to com- by providing food and accommodation event that the grid fails – a frequent missioning. The remote location of the for visiting European experts. They occurrence. Commenting on the solu- REPLACE OR REFURBISH? construction site brought quite a few even conducted blasting operations, as tion to this challenge, Karl Henninger challenges, as Kössler Project Manager one of the sisters is a trained explo- says: “Our constructing engineers Karl Henninger remembers: “The arrival sives engineer. have enabled isolated operation by us- of people and the transport of goods ing enormous mechanical centrifugal had to be arranged in different stages. From installation to commissioning masses, a complex control system and All the parts were shipped from Ham- Initially, two turbines, delivered in Sep- an electronic load controller.” burg to Dar es Salaam, where they tember and October 2014, respectively, were put onto trucks and taken to the were installed, with a total capacity of Changing lives forever site. The installation team, once they 5 MW (2 x 2.5 MW), and there is capac- Despite the challenges, installation be- arrived in Dar es Salaam, had to fly to ity for a third turbine to be installed, gan in January 2015 and, thanks to the Songea, the capital of the Ruvuma dis- when the demand for power justifies it. excellent collaboration between all the trict, and then be driven to the site by An important aspect of the installation project partners, the first electricity was Jeep.” In fact, the whole construction is its capacity for isolated operation. produced at the end of the summer. Currently, around 20 GWh are con- sumed from the total of 36 GWh pro-

1 The delighted local team at the duced annually by the two installed tur- completion of the project. bines – this explains why the installation 2 Construction was a challenge in this of the third turbine is still on hold. But remote region. even though all the power is not yet be- ing used, the Tulila plant has changed the lives of people in the region, and es- pecially in the Ruvuma regional capital, Songea, beyond recognition. Sister Yoela comments: “Before the plant was built, Songea was not an attractive des- tination, because the power was so un- reliable. People had to work in half-day shifts, and it sometimes took days be- fore surgical operations at the hospital BC Hydro's powerhouse at Ruskin, could be performed. Now the doctors in British Columbia, Canada. can work much more quickly, and we have new equipment such as X-ray ma- chines, which help with diagnoses. Re- 1 liable electric light also enables local Choosing to refurbish a power plant Refurbishing equipment rather than replacing it can reduce 2 children to study anytime, rather than rather than replace it – even one which is project costs and disruptions, and improve performance. only during the day. Life is so much Even with machinery that is 60 or 80 years old, many parts easier for everyone now.” decades old – can offer hydropower can be upgraded and reused. As a recognized expert in refur- And the good news doesn’t stop firms significant benefits. bishment, Voith is working on two such projects in Canada. there. Sister Yoela is hopeful that she and the sisters will soon be able to re- Hydro-Québec’s Rapides-des-Quinze: careful planning ceive a salary thanks to the sale of ex- Founded in 1944, Hydro-Québec operates 63 power stations cess power to Tanesco. And she is cur- throughout Québec, some of which have been running since rently discussing plans with Albert Koch the 1920s. One of these is Rapides-des-Quinze, which was to help other convents in Tanzania built in 1923 and extended in 1949 and 1954, with a fifth and achieve a similar transformation. // then a sixth turbine. These later extensions are the two

38 | HyPower 2016 HyPower 2016 | 39 SUCCESSFUL PARTNERSHIPS SUCCESSFUL PARTNERSHIPS

“We proposed reusing [the part], needs the same refurbished and new parts as the first – and Close collaboration with the customer the experience we’ve gained pays off in speed,” adds Wandrille The first step in 2012 was close collaboration between Voith realizing ­associated cost savings de Saint Louvent. and BC Hydro teams to perform an in-depth inspection of one for the customer.” The principal benefits for Hydro-Québec include a perfor- of the units. Voith provided BC Hydro with a detailed report on mance increase of 8% from each of the two refurbished every part of the machine and recommendations for replace- Pierre-Alexandre Proulx ­machines, along with reduced maintenance costs and effort. ment or refurbishment. Based on that knowledge, BC Hydro Voith Project Manager for Ruskin was able to define the exact project scope. The second Ruskin: only Voith proposed refurbishment phase, initiated in 2013, comprised the design, manufactur- In British Columbia (BC), BC Hydro is working with Voith to re- ing, supply and installation of components for each of the furbish their Ruskin powerhouse. Built in 1930, Ruskin is older three machines. Despite the lack of space and the proximity 1 than the extended areas of Rapides-des-Quinze that Voith of the machines to one another, at the time of publication, the

2 worked on in Québec, and it had barely been modernized first unit is ready for final commissioning, and the second unit ­areas Voith engineers have been working on. Time was lim- since its construction. The plant’s three power units needed a is scheduled for commissioning by mid-October 2016. The ited for each operation, but the machinery was over 60 years significant overhaul, including new turbine runners, new wicket third unit is scheduled for commissioning in early 2017. old and needed significant upgrades. gates and operating system, a new stator (frame, core and The first step, conducted by the customer, was to analyze winding), and rotor refurbishment. One of the biggest challeng- Competitive pricing – but it’s the value that counts the state of each main component and opt for replacement or es at Ruskin was that the powerhouse is very small, complicat- “Our proposal was competitive, but apparently we weren’t the refurbishment. The team found that the generator was still in ing disassembly and reassembly. While BC Hydro always pre- least expensive,” notes Pierre-Alexandre Proulx. “For BC reasonable condition, although about 70% of its components ferred refurbishment over replacement for the project, Voith Hydro, the added value aspect was key.” needed to be replaced. The turbine, with its 4.1 meter diame- was the only supplier to recommend reusing the rotor frame, These two projects help to demonstrate the many bene- ter, 17 runner blades and operating speed of 105.88 rpm, was rather than replacing it. “We could see that not every part of it fits of refurbishment – even on very old units – for hydropower at the end of its lifecycle and needed to be replaced complete- was damaged, so we proposed reusing it, realizing associated companies who may not have considered this. Voith has ly, and the same applied to the high-pressure pumps. In fact, cost savings for the customer”, says Voith project manager completed so many of these projects that it is a leader in the all the turbine components, with the exception of the turbine Pierre-­Alexandre Proulx. field, further reducing cost and risk for customers. // shaft and its seal, which could be refurbished, are new.

Fast reconstruction required Voith specialists conducted an in-depth inspection of the parts to be refurbished to assess what actions were required, and how they should be executed. They then proposed an opti- A turbine distributor is removed from the powerhouse at mized hydraulic profile that required some turbine parts to be Rapides-des-Quinze in Quebec, replaced, rather than refurbished as originally planned. Once Canada. the Voith specialists had taken delivery of the replacement parts, they quickly rebuilt the machine using a combination of these new parts and other refurbished components. “Because the site installation schedule required in the re- quest for a proposal was very challenging, Voith suggested that a two shift schedule of specialists worked 20/6. This was a big differentiator for Voith in winning the project,” says Wan- drille de Saint Louvent, the Voith project manager heading up the team. “Hydro-Québec was very happy about this as it met their own production requirements.” 1 The powerhouse at Ruskin is narrow – a big challenge when disassembling and assembling machinery. Hydro-Québec: better performance with lower costs 2 Voith engineers conducted an in-depth inspection at the beginning of the project. The Rapides-des-Quinze project is on the home stretch now, with the first machine commissioned in September 2016 and the second planned for an outage in March 2017. “The com- ponent of the second unit will be completed more quickly as it

40 | HyPower 2016 HyPower 2016 | 41 INNOVATION WORLD OF VOITH

The latest news from across the divisions of the Voith Group.

DIGITAL SOLUTIONS

The date: 1 April 2016. The occasion: The official start of operations for the new Group Division Voith Digital Solutions. With a mission to consolidate all of the Group’s know-how in the field of automation and digitalization, the focus will be on the development of new digital business models for indus- tries that Voith currently serves, as well as for completely new ones. Dr. Roland Münch, President & CEO of Voith Digital Solutions, is excited about the future: “I’m looking forward to working with an excellent team of experienced colleagues who are making the new Group Division into an Operator stations for sound-based monitoring. important pillar for Voith.” //

the system will recognize the sound SAFE AND SOUND from previous failures.” In short, the sys- tem has “self-learning” capabilities. “Sounds have different properties, In the very near future, unmanned hydropower plants and in the case of the rotating machinery will get first-hand remote support, thanks to a Voith in a hydropower plant, a lot of informa- innovation: sound-based monitoring. tion is hidden in lots of different frequen- cies,” explains Münch. “The application PAPERMAKING: checks for general patterns in the NEXT LEVEL ­frequencies, such as those that work ­together or don’t. These patterns are Voith Paper certainly had the hot topics cov- learnt, along with new patterns. Subse- ered at the recent Voith Paper Customer Keeping an eye on how a plant is oper- problems. HyGuard applies this princi- quently, the application compares the Symposium in Hamburg. Under the banner ating is vital for all Voith Hydro custom- ple to hydropower plants.” patterns to discover what is abnormal.” “Transformance – Papermaking 4.0,” 18 ers. However, keeping an ear on it is HyGuard technology works through speakers explored the opportunities that even more important, as mechanical a series of sensors installed at strategic Pilots already planned new technologies bring when it comes to problems can often be heard before locations around a remote, unmanned The first series of tests, consisting of mi- producing paper more profitably and com- they can be seen. The issue is, sending power plant. The system records crophones recording sounds for several COOL DESIGN petitively. The key ingredient to maximizing technicians around a plant to listen for sounds, which operators – perhaps days at a time, have already been carried these opportunities, according to Bertram anything unusual is time-consuming, based hundreds of kilometers away – out successfully at a hydropower plant in Tractor manufacturer Fendt is using a new cooling technology in its latest Staudenmaier, Chairman of the Management ­expensive and intermittent – especially if can assess for any abnormal noises. Germany. The next stage is to install the 1000 Vario series tractor – powered by a high-performance fan designed Board of Voith Paper: “A strong partnership the plant is in a very remote location. And if, for example, one of the sensors technology permanently at a pilot plant by Voith. With up to 500 HP on tap, the Fendt 1000 Vario is the world’s with our customers for shared success.” sets off an alarm, the operator can later this year, also in Germany. most powerful standard tractor, and that generates a lot of heat. The Voith ­Innovations in improving performance, trans- Listening is the key make a quick assessment, and immedi- Once the experts have sufficient experi- fan is positioned in front of the cooler unit and the engine, drawing higher- forming existing production methods, guar- One of HyGuard’s key developers is ately send the recording to an expert for ence with the pilot, the technology can density cold air from outside the vehicle and further compressing it through anteeing efficiency and availability through Rudolf Münch, and he uses the com- analysis anywhere in the world. be offered worldwide including in re- the high aerodynamic efficiency. This increases the pressure in relation to modern servicing, and the impact of digitiza- parison of a mechanic assessing a car mote plants in Africa as part of our new the intake configuration and produces an enormous air flow of up to 7m³/s tion on paper manufacturing were all dis- to describe the approach he and his Self-learning systems service concept. “With long distances for enhanced cooling – and all using less than half the energy of a standard cussed in detail. “There are exciting tasks colleagues have taken. “About 50 % of So far, so clever – but there is more. and variable transport infrastructure, fan. Together with the company’s established Hydrodamp vibration damp- and challenges ahead of us that we will what a mechanic finds out about your “The second part,” says Münch, “is that remote monitoring there makes perfect er, Voith technology is making a big contribution to the operating efficiency ­approach and master together,” concluded car comes from listening for potential if the same problem occurs repeatedly, sense,” concludes Münch. // and longevity of Fendt’s latest and greatest tractors. // Bertram Staudenmaier. //

42 | HyPower 2016 HyPower 2016 | 43 GUEST PERSPECTIVE GUEST PERSPECTIVE

tests in Ghana, Bangladesh and Honduras. And we got the results we wanted. That’s when I knew we had a product with the potential to save lives.” Importantly, Dr. Dankovich has con- Each filter is printed with usage sistently asked people in each community about their needs, instructions. A family of four and how they would use the product, because assumptions needs roughly one filter per week. and customs in every country are so different. And this knowl- edge has been instrumental in turning her work into a poten- tially viable commercial product – the Safe Water Book™.

A book that can literally save lives The Safe Water Book™ binds multiple “pages” together, each CREATING of which can be torn out and used to filter up to 100 liters of water at a rate of two liters every 10 minutes. “At typical con- sumption rates, each page enables a family of four to filter all the drinking water they need for a week. Each page is also THE SAFE WATER printed with information on why it makes sense to filter drinking water, and how to use the book to do so,” says Dr. Dankovich. In a world in which hundreds of millions of people don’t BOOK™ have regular access to clean drinking water, the potential of such a simple idea to prevent illness and save lives is obvious. And importantly for developing countries, where clean drink- ing water is often particularly scarce, the filters are also afford- Materials and environmental chemist Dr. Dankovich started out as a materials chemist, rather than able. Dr. Dankovich comments, “We are producing the paper Dr. Theresa Dankovich has created a an environmental one. While studying for her PhD, she joined on pilot-sized paper machines, where the cost of producing the Sentinel Bioactive Paper Network, a research network each page is only between 10 and 20 cents. Once we have paper-based water filter, delivered connecting Canadian universities that are investigating ways even greater scale, we expect this cost to fall significantly.” in book form, that could give hundreds of adding value to paper. These potential value adds include, of millions of people access to safe for example, using paper as a dipstick for pathogens or elimi- Commercial launch planned for 2016 nating toxins from agricultural runoff. But Dr. Dankovich had a In 2016, Dr. Dankovich formed a Pennsylvania Benefit Corpo- drinking water. specific interest, as she explains: “My focus was on the anti- ration, Folia Water, to bring the Safe Water Book™ to market. microbial applications of paper for water filtration. I started the A pilot project is currently running in South Africa, and this project in 2008.” will be followed by a similar project in Honduras, where Dr. Dankovich is collaborating with local doctors. “We’re also The Safe Water Book™ is born working with non-profits like Water is Life to spread the word, Over several years, Dr. Dankovich experimented with different and we have a sponsorship program, where people can buy types of papers and a biocide containing silver nanoparticles the books to donate to communities in need. Right now, it’s to create a filter paper that eliminates bacteria from water all about building awareness, getting samples out there and sources. Her laboratory experiments consistently proved that collecting final feedback before the launch, which we hope Dr. Theresa Dankovich is the filters were removing 100 % of the bacteria in the water will happen by early next year,” she adds. the co-founder, chairwoman, samples. After graduation from McGill University in 2012, The only other immediate challenge is fulfilling all the rele- and chief scientist for Folia Water, a benefit corporation Dr. Dankovich joined the University of Virginia as a postdoc- vant regulatory requirements. But Dr. Dankovich is hopeful that dedicated to the scaling and toral researcher in 2013, where she conducted field trials for this will be achieved soon – not least because she sees huge distribution of a new technol- the first time. need for the product all over the world. “I hope that in 5 years ogy, The Safe Water Book™, which uses ­silver nanoparti- we will be distributing the Safe Water Book™ globally, includ- cles to filter out bacteria Test case: South Africa ing in rural regions of India and China, where the populations from natural water sources, “In 2013, we took the filters, which look a bit like orange-­ and demand for clean drinking water are so vast.” A bold am- making that water safe to drink and providing educa- colored tortillas, to a range of natural water sources in South bition, and one that deserves all the attention it receives. // tional text on water safety. Africa. We sampled water from a number of places and took bacteria counts before and after filtration. We then repeated the http://www.foliawater.com

44 | HyPower 2016 HyPower 2016 | 45 FIVE QUESTIONS FIVE VOITH HYDRO PROJECTS IN THIS ISSUE

QUESTIONS Throughout Africa, Voith is leading hydropower projects that help local FOR … governments and communities drive economic growth and social improvements.

Dr. Tobias Keitel

New Chief Operations Officer of Voith Hydro Helping Liberia rebuild its power infrastructure after years of civil war. PAGE 19

What new perspectives on the hydro business have What makes you passionate about hydropower? you gained since becoming COO, and how has your The huge dimensions and often beautiful surroundings 1previous hydropower experience helped you? 3 of our construction sites. As an engineer, it is fascinat- MOUNT COFFEE The basic principles of project business don’t change, no mat- ing to be involved in these projects, and it’s rewarding to work ter how many projects you are responsible for, so my experi- in a sector that produces clear value: hydropower plants ence is definitely helping me in this respect. The new role has ­generate clean and sustainable electricity from renewable Helping a convent in Tanzania given me a more global perspective, as I am now responsible resources.­ generate its own electricity and transform the community. PAGE 36 for all projects across the different Operating Units, and I am more aware of market differences. The US is definitely leading What do you like best about Voith Hydro? in the modernization business and we have a very strong pres- Our history and pride in what we have achieved over ence in this sector. In China and Canada, the sheer size of the 4 the years. We are a market leader, and we can solve CAMBAMBE TULILA plants and the market volume are impressive. any technological problem. I also like Voith’s medium-sized- Expanding hydropower capacity in The turbulent history of a plant in company character, and the strong bonds between employ- Angola to support rapid economic Mozambique. PAGE 30 What do you think are the industry’s biggest chal- ees who have worked here for many years. This creates a growth. PAGE 12 lenges? pleasant working environment and a strong foundation. CAHORA BASSA 2 Energy is one of the most important issues of our time. One global challenge in the coming decades will be generating The main focus of this edition is Africa. What con- more energy while keeping CO emissions low. This is related nects you to the continent? ² to a second major challenge; ensuring the stability of the grid, 5 I was very involved in the Ingula project last year, a BOKSBURG despite the growing but fluctuating input from solar and wind pumped storage plant in South Africa, which we managed to energy. Hydropower offers an excellent solution to both issues. turn into a fantastic success after striving long and hard INGULA I believe that a prerequisite for this is to improve the ­together with our customer. That was a good feeling. // often conflicting image of hydro plants. On the one hand, hydropower is seen positively, because the energy comes from renewable resources. On the other, hydropower plant Dr. Tobias Keitel studied industrial engineering and holds an MBA. Pre- Investing in local service teams that construction attracts protests, and hydropower is not classi- viously, he was with Boston Consulting Group and MAN Ferrostaal AG, will cover many countries in Africa. fied as 100 % renewable. I hope that, together with our cus- before joining Voith Hydro as a project manager in 2011. He held various PAGE 34 Improving power supply reliability management positions before he was appointed Chief Operations Officer with a pumped storage plant in South tomers, we can strengthen a more positive public image for of Voith Hydro in January 2016. Africa. PAGE 8 hydropower.

46 | HyPower 2016 HyPower 2016 | 47 Customer Magazine by Voith Hydro Holding GmbH & Co. KG Alexanderstr. 11 89522 Heidenheim Germany www.voithhydro.com

A Voith and Siemens Company