The sdg21.web database lists projects with larger solar thermal plants that supply settlements, neighbourhoods or urban districts. Especially in Denmark (more than 110 plants), but also Austria (17 projects) and Sweden (13 plants), large solar thermal plants have been realized that supply entire villages and city districts. An overview of all nearly 200 large solar thermal plants in Europe is available: www.solar-district-heating.eu/en/plant-database
Solar thermal plant Römerhügel in Ludwigsburg
Size: 14800 m² (storage size: 2000 m³)
70806 Ludwigsburg: With a collector area of 14,800 m², Stadtwerke Ludwigsburg-Kornwestheim has built the largest solar thermal plant in Germany. In a 20-meter high heat storage tank with a volume of 2,000 cubic meters, the solar-generated energy is available even when there is little or no solar radiation. The collectors collect around 5200 megawatts of heat per year, enough to supply around 300 average households. Completion: 2020
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Building area "Hirtenwiesen II" with solar local heating in Crailsheim
Size: 7410 m² (storage size: 39000 m³)
74564 Crailsheim: 250 residential units and a school with sports hall (Hirtenwiesenhalle). Solar local heat supply for the base load heat of 2000 apartments with 7,410 m² collector surface, a 39,000 m³ geothermal probe heat storage, two buffer storage tanks (100 m³ + 480 m³) and a compression heat pump (80 kW). Completion: 2008
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Energy bunker, IBA Hamburg
Size: 6975 m² (storage size: 2000 m³)
21107 Hamburg-Wilhelmsburg: The former flak bunker in Wilhelmsburg has become a symbol of the climate protection concept Renewable Wilhelmsburg. The monument, which has been virtually unused since the end of the war, was refurbished as part of the IBA Hamburg and converted into a renewable power plant with large-scale heat storage. The energy storage facility has a volume of 2,000 cubic metres, which corresponds to 2,000,000 litres. It supplies the 120-hectare Reiherstieg district with climate-friendly heat and feeds renewable electricity into the Hamburg distribution grid.
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Solar City Neckarsulm-Amorbach
Size: 5884 m² (storage size: 63360 m³)74172 Neckarsulm-Amorbach: the largest solar local heating project to date with a 150,000 m3 -The storage capacity was 65,000 m³ in 1997 and 115,000 m³ in 2001. The entire new development area with a total of 4,000 residential units has been realised in low-energy construction and is supplied via various local heating islands and CHP units. 2004: a biomass heating plant was put into operation. A housing estate with 1,300 units and a school are supplied by a solar system with seasonal storage.
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Solar City Wiggenhausen
Size: 4056 m² (storage size: 12000 m³)
88045 Friedrichshafen: 570 apartments, 40,000 sqm living space, 4.2 million euros for solar technology = 5,500 euros additional investment per apartment = 83 euros/sqm living space, research project of ITW, Stuttgart, solar coverage ratio is of 50 % (heating and hot water), 4,056 sqm solar collectors, 12,000 cubic meters storage (33 m diameter, 20 m high)
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Solar settlement Bramfeld
Size: 3000 m² (storage size: 4200 m³)
22175 Hamburg-Bramfeld: 130 WE, one of the larger solar local heating projects with a 4,000 m3-water storage tank. Completion: 2000
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Solar local heating Ackermannbogen
Size: 3000 m² (storage size: 6000 m³)
80797 Munich: to 45% solar supplied housing estate consisting of 4 large blocks of flats as well as eight smaller town houses with a total of 319 flats (30,400 m2 floor area). The residential buildings were constructed and marketed by five property development companies. The solar district was the third of four construction phases of the Munich development "Ackermannbogen" (total size: 2,200 apartments, 500 workplaces and 9.2 ha of new green areas). Completion: 2006
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"Solarcity" Hanover Kronsberg
Size: 2750 m² (storage size: 1500 m³)30539 Hanover-Kronsberg: Sub-project of the Expo 2000 new housing development. 106 apartments with large solar collectors on the roofs, as well as solar local heating with seasonal storage. It is located in the southeastern part of the district. Completion: 2000
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Solar local heating network in Moosach
Size: 1067 m² (storage size: 100 m³)
85665 Moosach: In the community of Moosach, the cooperative Regenerative Energie Ebersberg eG and the company NATURSTROM AG have implemented a solar local heating network with a collector field of 1067 sqm and a buffer storage of 100 cubic meters. If the sun is not enough, a biomass boiler supports the energy supply. This is fed with wood chips from the region of maximum 40 kilometers. Completion: 2018
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Solar residential complex "Helios
Size: 1000 m² (storage size: 20000 m³)
18055 Rostock: 108 apartments in 11 buildings. Apartment sizes between 44 and 93 m². Location: Brinckmanshöhe residential park. Completion: 2000
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Ford housing estate in Cologne
Size: 1000 m² (storage size: 45 m³)
50735 Cologne-Niehl: Redevelopment and addition of 11 apartment blocks with rental apartments. 300 flats before refurbishment, 345 flats after refurbishment. Average 47 m² before refurbishment, approx. 55 m² after refurbishment. Architecture: ARCHPLAN Münster. Client: State development company (LEG Wohnen NRW). Completion: 2010
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Wooden housing estate Ingolstadt
Size: 850 m² (storage tank size: 270 m³)
85049 Ingolstadt: With 116 units in timber construction out of a total of 142 units, this is one of the larger timber housing estates in Germany. It was realised in three construction phases, with 81 units by bogevischs buero architekten & stadtplaner gmbh, Munich; as well as 35 by Behnisch Architekten, Stgt. and 26 units by Brand Architekten, Ingolstadt (in mineral construction); client: St. Gundekar-Werk Wohnungs- und Städtebaugesellschaft mbH, Schwabach. Completion: 2011
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Exhibition grounds Oederan
Size: 700 m² (storage size: 8000 m³)09111 Oederan Chemnitz: 622 RESIDENTIAL UNITS. Model project for the Chemnitz technology and business park solaris, as well as the Stadtbau- und Wohnungsverwaltungsgesellschaft. 17 blocks of flats were renovated, 7 of them were equipped with 100 sqm collector surface each. Year of construction: 2000
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NRW Solar Settlement "Steinfurt-Borghorst
Size: 510 m² (storage tank size: 1500 m³)
48565 Steinfurt-Borghorst: 42 units, project with solar local heating and seasonal storage (1st project of "50 Solar Housing Estates NRW"). Completion: 2000
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Solar settlement Gelsenkirchen
Size: 440 m² (storage tank size: m³)
45879 Gelsenkirchen-Biskmarck: 71 units, 1st solar housing estate in the Ruhr area and in the development programme "50 solar housing estates NRW", completion: 2001
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Braamwisch eG
Size: 400 m² (storage tank size: m³)
22175 Hamburg-Bramfeld: Braamwisch eG, 42 dwelling units, occupancy: 1997
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New building of the Federal Environment Agency in Dessau
Size: 354 m² (storage tank size: m³)
06844 Dessau-Roßlau: New building of the Federal Environmental Agency. Planning: sauerbruch & hutton architects. Dessau has been the headquarters of the Federal Environment Agency since 2005. Around 900 of the approximately 1,500 employees work here in a modern office building constructed according to ecological standards. Awarded the German Seal of Approval for Sustainable Building in Gold in 2009. The seal of quality awarded by the Federal Ministry of Building and the German Sustainable Building Council honors exemplary new administrative and office buildings.
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Solar housing estate in Köngen
Size: 160 m² (storage tank size: 7 m³)
73257 Köngen: Solar-supported local heating concept (hot water preparation by means of large collectors), low-energy construction. 72 WE
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Munzingen solar garden
Size: 32 m² (storage tank size: 2.2 m³)
79112 Freiburg-Munzingen: Solar garden, 8 units. Rolf Disch (Freiburg), Year of construction: 1993-1994
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"1st passive house" Darmstadt-Kranichstein
Size: 24 m² (storage tank size: 1 m³)
64289 Darmstadt-Kranichstein: "Passive House", Passive House IWU (Inst. for Living and Environment) Darmstadt; Prof. Bott/ Ridder/ Westermeyer, exact north-south orientation. Completion: 1991
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