The Sustainable ENERGY AND ENVIRONMENT PROJECTS on Gotland Society The Island of Gotland- A centre for sustainable development in the Baltic Sea The Island of Gotland- A centre for SUSTAINABLE DEVELOPMENT In 1996 the municipality of is to reduce our consumption The combination of rene- Gotland set a target that the of natural resources to a level wable energy with measures island should become a sus- that is compatible with the that tainable society by 2025. Earth’s ability to regenerate increase the efficiency with Sustainability will play a them - thereby ensuring the which we use our natural growing part in our everyday availability of these resources resources is a central part of life not only on Gotland but for future generations. Gotland’s strategy for realising also across the globe, as more Using RENEWABLE ENERGY a sustainable society. Today and more governments, com- sources such as solar, wind, bio- renewable energy accounts for munities and individuals realise mass, small-scale hydro and around 10% of the island’s that we cannot continue drai- geothermal power helps to total energy supply, so we still ning the Earth of its natural reduce society’s dependence on have a long way to go, but resources. finite and polluting energy plans are in place to increase One of the requirements for sources such as fossil fuels and this to 100% within the next achieving a sustainable society nuclear power. 25 years. Sustainable building Almedalsbiblioteket 1 Visby. District heating Visby, Klintehamn, 2 Hemse, Slite. 10 SMÖJEN Sustainable building IHRE 9 Hansahuset, Visby. 3 4 Windpower 4 SLITE 8 2 12 Bockstigen, 11 Näsudden, Smöjen. VISBY Grötlingboudd, 1 2 3 (planned) Sustainable building 12 Suderhälsan, Hamra. 5 Waste water treatment 6 6 7 BIOGAS Roma. ROMA Biogas installation 7 BIOGAS KLINTE- Lövsta, Roma. HAMN 2 Electricity generation 8 from industrial waste heat. Cementa, Slite 2 12 Sustainable building 9 HEMSE Ihre Gård, Ihre Small-scale hydropower 10 NÄS Rabbishuppet 4 Ihre 4 Sustainable building 11 Muramaris, Visby 5 RME, renewable fuel 12 HAMRA Filling Stations at Lantmännen Visby, Hemse, Slite. 1 Cool know-how A new central library, Almedalsbiblioteket, Visby A combined town-university library heatpump will provide heat during Facts: is being built adjacent to the attrac- the winter. The pumps are to be • A sea-water based cooling system tive city park at Almedalen in driven by electricity generated by is to be used instead of air- conditioning. Visby. The Municipality and photovoltaic cells mounted on the • A sea-water based heatpump Gotland’s University College plan library’s roof. The need for artificial will provide heat. for the building to be a flagship lighting will be low, as daylight use • 50m2 photovoltaic panels will example of sustainable architecture is optimised by the building’s produce electricity to drive the and a visible demonstration of their design. The building’s structure and pumps. high environmental ambitions. ventilation systems have been desig- • Resource efficient and recyclable materials are given high priority. Energy efficiency and the use of ned so as to make the most of the • Large use of daylight will reduce renewable energy resources feature structure’s capacity for thermal sto- energy needs for lighting. strongly in the building’s design. To rage. High performance facade • High performance glazing will give reduce the need for energy intensi- systems will allow daylight penetra- both passive solar gain and low ve air-conditioning systems seawa- tion while keeping in heat in the energy loss. • The project is due for completion ter will be used for cooling the inte- winter months and providing sha- by autumn 2001. rior spaces during the warmer mon- ding during the summer. ths of the year. A sea-water based Project co-operation: The Municipality of Gotland Gotland’s University College Investment: Solar shading Daylight 13.5 million Euro Further information: www.hgo.se Seawater 2 Clean energy from a distance GWh 250 250 GWh Bio-fuelled district heating in Visby 200 200 these valuable buildings from further decay a district heating 150 150 system has been in operation in Visby for the last twenty years. 100 100 Around 95% of the energy sup- plied to the district-heating 50 50 network comes from renewable 0 0 sources. This cleaner and CO2 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 neutral energy comes in various Fossil fuel Bio-energy forms, the largest contribution Electricity Bio-gas,Heatpump being from wood chips - a by- product of local saw mills. Facts: • The use of oil for heating has Biogas from the town’s landfill been reduced by 75% since site and wastewater treatment 1980. plant is also used to produce heat • Sulphur discharge from oil for the network. In addition to burning furnaces has been this a 10MW heat pump is used reduced by 95% since 1980. The World Heritage City of • Emissions of CO2, sulphur Visby consists of many unique to extract ‘free’ heat from the sea. andnitrous oxides have been buildings and mediaeval ruins Altogether district-heating reduced. that are built from limestone. covers more than 75% of the • District heating networks also city’s heating needs- helping to supply the towns of Hemse, These structures are particularly Slite, and Klintehamn. sensitive to air pollution - caused keep the air free from pollution to the benefit of Visby’s inhabi- Co-operation: to a large extent by the emissions Renewable energy sources Gotland’s local energy tants and their cultural heritage. used in the district heating from oil-fired heating boilers. company, systems on Gotland: Due in part to a desire to protect The Municipality of Gotland • Bark, wood-chips, demolition wood and shavings from Gotlandsflis AB sawmills are burned in Vattenfall AB modern furnaces. • A sea-water based heat Further information: pump with www.gotland.se/EKOKOM a 10 MW capacity. www.gotlandsenergi.se • Industrial waste heat. www.hallbarasverige.gov.se • Biogas from landfill. • Biogas from the sewage treatment plant in Visby. 3 Building on new knowledge Hansahuset, Säveskolan, Visby natural resources. Ecologically Facts: • Low emission building materials. sound materials have been are given high priority. used to a large extent. Solar • Materials have been chosen energy is used to provide hot to allow for future reuse and water for the washrooms. recycling. • Natural ventilation is assisted by Separation toilets enable urine specially designed chimneys to be collected and used as fer- that adjust to the wind direction. tiliser. Large amounts of day- • Separation toilets are used (urine is collected for fertilising). At Gotland’s largest high- light, generous ceiling heights, • 6m2 solar panels for providing school the pupils come away natural ventilation and the hot water. with something more than the absence of ventilation fans • The building is also connected usual qualifications - an envi- result in a healthy, quiet and to the district heating network. ronmental awareness. attractive indoor climate. All Hansahuset, a part of Säve col- together this provides the lege in Visby, is an excellent pupils with good conditions example of sustainable archi- for succeeding with their stu- tecture in practice. This en- dies and a building which has vironmentally adapted buil- a low impact on the environ- ding has been created with ment. Project co-operation: The Municipality of consideration for the use of Gotland/Fastighetskontoret Visby Arkitektgrupp AB Further information: www.gotland.se/EKOKOM www.visbyark.se 4 Clean energy is a breeze Wind energy installations in the sea and on land. Gotland’s central position in wind parks at Smöjen and the Baltic provides the islanders Storugns. with a never-ending natural Due to the shortage of sites on resource - the wind. Wind power land there are plans to build more has been put to use on Gotland wind farms in the sea. The largest Facts: for many years and at one time currently being planned is an • At the beginning of 2000 there were over 130 wind turbines installed on over 500 traditional windmills 80MW installation to be located the island. provided power for the island’s near Grötlingboudd off • Total energy production from wind communities. Considering the Gotland’s south-east coast. As power on Gotland is around global environmental advantages well as large wind farms, single 130 GWh / year. that this clean energy source pro- wind turbines are used to provide • Electricity production by wind- power corresponds to around vides windpower is destined to electricity for farms and factories. 15% of Gotland’s consumption. become an increasingly valuable In Klintehamn, the companies • Näsudden wind farm consists of resource in the future. Today Gotlandsflis and Lantmännen 80 windpower stations with more than 2000 households on have both installed 500 kW wind an installed effect of c:a 40MW. Gotland own shares in wind tur- turbines, which each produce • Bockstigen consists of 5 x 500kW turbines specially bines through local wind energy around 1.1 GWh / year. Farms adapted for offshore use. co-operatives. Windpower is cur- with forward thinking owners • Smöjen wind park consists of rently responsible for around such as at Stafva gård and at 2 x 500kW, 4 x 660 kW and 4 x 1.5 15% of the island’s total electrici- Ryftes in Fole have also invested MW turbines with a total effect of ty consumption. There are in their own wind turbines and 9.64 MW. • Storugns wind farm consists of clusters of wind turbines, so cal- use these to enhance their envi- 6 x 660 kW turbines with total effect led wind farms or wind parks, at ronmental profiles. of 3.96 MW. various locations around the island.