WBG Nibelungen, Amalienstraße, Braunschweig (Germany)

Multi-family house | 50 sqm | 33 kWth | 2003

The system is an integrated solar-heating system, an industrially prefabricated construction unit with direct control for the complete heat production and distribution. The solar operating method is as follows: priority of solar and direct feeding-in to the consumption points, whereas storage is subordinate.
The object was awarded with the DGS certificate for large-scale solar systems.

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Bischof-Benno-Haus, Schmochtitz (Germany)

Educational centre | 79 sqm | 48 kWth | 2000

The bishop Benno house in Schmochtitz is the central educational institution of the diocese Dresden Meissen.
In the framework of the development of a former barn, a solar thermal system for hot water heating for three buildings (barn, land house and main house) was established on the new covered roof.

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DEGEWO solar plant, Berlin (Germany)

Multi-family house | 59 sqm | 38 kWth | 2004

Seven large format collectors with an overall absorber surface of 58.8 sqm were set up onto the roof of a multi family house in Berlin (53 dwellings) in 2004.
The energy output of the CSTS is used for hot tap water heating and space heating support. In the first year of operation a solar energy output of nearly 30.000 kWh was measured.

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Die Fabrik, Berlin (Germany)

Hotel | 27 sqm | 17 kWth | 1999

The hotel „Die Fabrik“ is located in a former industrial building. In 1994 when the building was reconstructed as hotel rooms, bathrooms, the lobby and a restaurant were created. The increase of comfort standard was not to manage with the 50-years-old out-of-date steam heating system. Therefore in 1999 the whole building was energetic modernised.

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Hotel Fortuna, Kirchzarten (Germany)

Hotel | 54 sqm | 33 kWth | 2004

During a regular pub meeting in the year 2000, the hotel owner and a collective solar thermal systems installer discussed the apparent high consumption of oil for hot water heating during the warm months.
The installer started measuring the consumption of hot water and found a maximum of 4,000 litres and a daily average of finally 2,900 litres.

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GEWOBA AG, Bremen (Germany)

Multi-family house | 42 sqm | 27 kWth | 2005

GEWOBA AG housing company is starting to use innovative techniques when retro-fitting their buildings. This building is representative for their building stock and therefore was chosen for this measure.
The solar collectors are roof-integrated and used for hot tap water heating and space heating as well.

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Karl-Lemmermann-Haus, Hanover (Germany)

Pension house | 41 sqm | 29 kWth | 2002

In 2002 the energy supply of this residential accommodation for homeless males was renovated: a 40 sqm solar thermal plant for hot tap water heating, a 4.7 kWp photo­voltaic plant and a rainwater catchment system were installed.
The consumption of natural gas could be reduced by more than 20,000 kWh/a.

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Wohnungsgenossenschaft "Karl-Marx" Potsdam e. G., Potsdam (Germany)

Multi-family house | 222 sqm | 140 kWth | 2000

The presented residential building is a multi-storey-building of 11 floors, built in the typical tower block style of the 70ies. In 2000 a comprehensive reconstruction was done including several energy related measures. Furthermore the hole heating and hot water station was renewed. Today heat supply is effected by district heat and by the 222 sqm large solar thermal plant for a certain share of the hot water demand.

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Königsberger Strasse, Wiesbaden (Germany)

Multi-family house | 34 sqm | 21 kWth | 2005

The thermal solar plant was established in the context of the energetic reorganization of the buildings. The accomplished measures concerned both the building cover, and the renewal of the heat production. It is expected a decrease of final energy consumption of 70 %.
The solar plant is used for tap water heating.

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Laurentiushaus, Olching (Germany)

Nursing home | 77 sqm | 48 kWth | 2005

Reorganization of the gas central heating installation was necessary, because the new EU-standard was not reached.
Additionally a very high warm water consumption also in the summer was determined. Therefore a CSTS and three mini cogeneration units were installed.
The building itself is in good shape.

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WG Merkur, Berlin (Germany)

Multi-family house | 56 sqm | 35 kWth | 2000

In the course of refurbishment the water heating was changed over from decentralised to centralised, particularly due to the high repair and maintenance costs. The decision for a solarthermal plant was made not least due to the positive experiences, the Merkur already gained in this field. The solar plant is used for both water heating and support of space heating.

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WBG Neustadt, Neustadt a. d. Weinstraße (Germany)

Multi-family house | 50 sqm | 32.5 kWth | 2005

This object consisting of four buildings was totally refurbished: storefront, windows and heating system were renewed or renovated.
Hot tap water heating is done by the solar system according to an alternative storage principle – the other way around: the heat is used first and only the actual surplus heat is stored then.

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EWG Pankow, Berlin (Germany)

Multi-family house | 170 sqm | 100 kWth | 2006

In 2006 the EWG Pankow, a building association located in north-east Berlin, started comprehensive modernisation and reconstruction measures on seven multi-family buildings of one building type. By centralisation of heating and hot water generation the most important condition for solar thermal were created.

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Passive houses, Karlsbad (Germany)

Residential Estate | 62 sqm | 40 kWth | 2002

Initiated and financed by Alfred Ritter, Paradigma has extended its proven concepts with this type of residential estate of passive houses. Solar energy is used for hot tap water and space heating. The residential estate was consistently planned and built in a passive house design. Efficiency and the usage of ecological technical building equipment have always been in the primary focus.

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Scheffelstraße 35, Freiburg (Germany)

Multi-family house | 29 sqm | 20 kWth | 2005

A 1915 built apartment house without any refurbishments was completely energetically renovated in 2005. Following measures were done: fully insulating, dual-pane windows, glazing of balconies to loggias, installing of historical box-type windows and a vestibule, a cistern for using rain water for toilets, a central hot tap water and space heating system based on renewable energies.

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Scheffelstraße 48, Freiburg (Germany)

Multi-family house | 20 sqm | 14 kWth | 1999

This is a listed building which was erected in 1899. Following measures were done in 1999: insulation of the whole attic, cellar walls and facades, installing of dual-pane windows, glazing of the west faced balconies, installing of historical box-type windows and a vestibule, installing of a central hot tap water and space heating system based on renewable energies.

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Strählerweg, Karlsruhe (Germany)

Single-family detached house| 125 sqm | 60 kWth | 2004

The building which is nearly 35 years old, showed a high yearly need in heating warmth due to a reactivated swimming pool. The solar system works as a source for hot water, also covering the swimming pool, supports the heat pump and supplies a highly efficient insulation of face elements. The electrical energy for the operation of the heat pump is supplied by a photovoltaik-system.

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Tulbeckstraße, Munich (Germany)

Multi-family house | 180 sqm (2 × 90 sqm) | 126 kWth | 2005

The heat supply of the whole building is realised by two heating systems. Each heating system consists of two natural gas condensing boiler, four hot tap water heaters and a serial hot tap water heater. Both heating systems are supported by a solar thermal system. All solar energy is stored in two buffer storages. Solar heat is only used for hot tap water generation.

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