Enabling KMW AG to operate profitably in the increasingly volatile power market and provide climate-friendly district heating to the community. Owing to the broad use of renewable energy sources as well as the utilisation of power generation for district “Unlike traditional CHP power heating, Germany has become one of Europe’s forerunners in the plants based on coal-fired units or development of its energy system. gas turbines, Wärtsilä gas engines can be started and stopped The municipal energy producer Kraftwerke in short-term markets with competitive without limitations within just 2 Mainz-Wiesbaden AG (KMW) recognises prices, resulting in a new revenue stream minutes. This is our answer to the the benefits that greater flexibility in the for the company. Furthermore, KMW AG is generation of conventional power offers, complying with the renewed Combined Heat increasingly volatile power market as the share of renewables in the system and Power (CHP) Act, whereby Germany that results from greater levels of steadily increases. Not only does this has committed to increasing its share of renewable energy. It makes us the flexibility guarantee reliable power supply, but electricity produced by CHP power plants future partner of renewables.” it also enables KMW AG to operate profitably to 25% by 2025. To meet this target, the act in short-term power markets. favours flexible and environmentally-friendly Jörg Höhler, CTO CHP power plants. at Kraftwerke Wärtsilä’s fast-acting engine power plant Mainz-Wiesbaden AG enables KMW AG to operate the plant KEY DATA
Growing share of renewables (EPC), as well as a comprehensive 15-year in German and European power maintenance agreement that guarantees system CUSTOMER: availability and reliability of the plant. Kraftwerke Mainz-Wiesbaden AG The “Energiewende”, Germany’s plan Wärtsilä provides a range of maintenance for its energy transition, has ambitious services, including on-site support and TYPE: Wärtsilä 34SG based CHP plant targets for expanding the use of renewable online monitoring. The latter is conducted OPERATING MODE: Combined heat energy sources. By 2050, Germany aims via Wärtsilä’s Asset Diagnostics combined and power, operating in the reserve to have 80% of its energy produced by with expert analyses. It monitors the markets renewables. At the same time, the plan condition of the equipment and identifies outlines actions that support technological instant maintenance needs. The use of GENSETS: 10 x Wärtsilä 20V34SG developments and strengthen energy Asset Diagnostics ensures safe and reliable TOTAL OUTPUT: 100 MW for power + security. The continued and strong addition operation. This increases the availability of up to 96 MW for district heating of renewables, as stated in the plan, is the plant and allows for better predictability particularly interesting. It aims to make of operations. Wärtsilä ensures that KMW FUEL: Natural gas Germany’s energy system more sustainable AG has the required capacity available SCOPE: EPC (engineering, and to drastically lower its greenhouse when needed, for instance during periods of procurement and construction) and gas emissions. On the other hand, the increased demand in the winter. intermittency of renewable power will also a 15-year maintenance agreement create a need for more flexible generation of Stephan Krome adds: “We sought an with performance guarantees. The conventional power. EPC delivery and a complete maintenance maintenance agreement also includes agreement. With Wärtsilä, we now have a online monitoring and support. Intermittency is best balanced by flexible competent and strong partner on our side DELIVERED: 2020 power generation, such as Wärtsilä’s for the next 15 years.” Smart Power Generation technology. To date, intermittency shapes the pricing structure within EEX (the European Energy Exchange). In the future, fluctuations in THE CHALLENGE WÄRTSILÄ’S SOLUTION BENEFITS price determinants will favour fast-acting The need to generate A 100 MW flexible engine power Reliable district heat and power power profitably in a market plant that allows for benefitting from supply to the city of Mainz and generation. with increasing levels of volatile power prices revenues from short-term trading renewables In response to this change in the market, Financial and timing risks in Full EPC delivery As EPC supplier Wärtsilä takes Kraftwerke Mainz-Wiesbaden AG has construction full responsibility for both built a state-of-the-art engine power plant timelines and costs supplied and maintained by Wärtsilä. With Power plant availability and A comprehensive 15-year Guaranteed performance, reliability throughout the maintenance agreement predictability of operations and the fast-starting power plant, KMW is able to lifecycle optimised maintenance sell its electricity to the EEX when pricing is favourable.
Combined heat and power – a vital part of the energy system As noted above, Germany has committed to increasing its share of electricity produced by CHP power plants to 25% by 2025. This implies that the vast majority of new plants in power generation will need to produce district heating as well as power. KMW AG supplies the city of Mainz with power and district heating – the latter reaching approximately 40,000 households. Stephan Krome, CFO, notes: “The combination of the company’s current assets and the coming Wärtsilä CHP plant allows us to supply the citizens of Mainz with the most efficient and affordable district heat.”
A full EPC delivery with a lifecycle solution Wärtsilä’s scope of service covers
engineering, procurement and construction 06.2020
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