Sonnenhaus-Institut

• Solar houses: Renewables to Make Up 50 % of the Annual Energy Demand -

  There was no going around the huge Solarhaus 50+ sign in the centre of Hall B2 at the Intersolar, the international solar fair in Munich at the end of May. Solar Energy covers more than 50% of the heating demand of such a Solarhaus 50+. Photo: Bärbel Epp