SUSTAINABLE SUPERMARKET
REWEﾂｮ Where: Berlin What: New built grocery carbon neutral store Effects: Compared to a standard store of the same size, this building uses 48 percent less energy and appr. 40 percent of the energy used is produced by the buildingﾂｴs photovoltaic cells and geothermal energy system. Details: The 2,550 m2 store (of which 1,830 m2 is store area) is one of the first of its kind to let in great amounts of daylight. This saves energy and creates a very different shopping experience compared to the classic supermarket with no views to the outside world.
Structure: Twelve 46 m glued laminated timber frames span the store at intervals of 6.38 m, forming the supporting structure. The walls are made with prefabricated wood sandwiched elements filled with cellulose insulation enabling simple, fast and safe assembly.
Lighting: A 280 meter strip of windows combined with 18 domed skylights lets in daylight. Light sensors turn artificial lighting on and off as needed. Heating and cooling.
Excess heat from coolers and refrigerators are stored in a buffer tank and reused for heating the building. Geothermal energy is used for both heating and cooling the store.
Rainwater retention: Rainwater is collected and used for toilets, watering of the grounds and floor cleaning.
Energy:
1,600 m2 of solar photovoltaic cells are on the roof. 331 m2 of photovoltaic cells are integrated in the glass on the projecting roof. Together with the geothermal energy system this makes the building app. 40% selfsufficient in energy.
42窶ィENEFITS OF SUSTAINABLE BUILDINGS
Building materials are chosen for sustainability. In this case, wood is used extensively, which reduces CO2 emissions by 435 tons compared to more commonly used materials. The prefabricated elements makes the construction process less cumbersome, and the building concept with laminated timber frames can be copied in many sizes for different kinds of stores.
CASE: NEW BUILD GROCERY STORE BUILDING