About us

We have been dedicated to the spread of solar technology in upper Franconia since the end of the 1980’s. We work with regenerative technologies of all forms because the reduction of CO2 emissions is our particular concern.

The use of regenerative energy technology is not only a company concern, but also a lifestyle. Since 1997 we have had automobiles in our company powered by vegetable oil which is CO2 neutral as well as sulfur free. We initiated our quest with systems for hot water production and later expanded our spectrum to systems for electrical generation and air collectors, to wind turbines and combined heat and power units (BHKWs) powered by vegetable oil.

We have extensive, diverse experience in the application possibilities of renewable energy technology. Aside from many standard systems a few stand apart: a 63 m² hot water system for a hotel, a completely self contained electrical supply for an inn, a self contained heating system in a holiday house in Istria, and a photovoltaic system for a hospital in Tansania.It is not our goal to sell as many cheap solar systems as possible but to build premium high quality systems that spare the environment as many hazardous substances as possible.

We moved into our new office in August 2003 that was built as a plus-energy house (produces more energy as it uses).

• The office is completely supplied by renewable energies.
• There are no ecologically harmful emissions.
• The solar collectors for hot water and indoor heat have a surface area of 31 m², and are connected to a hybrid-latent-heat storage unit (water- salt) 28 m³. This latent heat storage unit, developed in a research project in 2008-2009, fullfills all expectations.
• The three photovoltaic systems in front of the building (Track-Racks) have an output of 3,96 kWp. They are active double axial tracked ; thereby providing up to 40% more output.
• The photovoltaic system on the roof of the hall has an output of 42,42 kWp.
• Our module comparison system, on the roof of our other hall, has an output of 83,37 kWp with 407 modules from eight different module types (nono, polycrystaline, thin layer). Here we can see the performance of different modules under varying conditions.
• An air collector integrated into the facade (5 m2), with a self contained electrical supply, functions as an indoor heater.
• An air well was laid (2m deep and 50m long) for year-round for building climate control.
• A vegetable oil powered combined heat and power unit (BHKW); with an electrical output of 12 kW, and a thermal output of 24 kW, provides the building with hot water and indoor heat on cold days. The electricity is fed into the grid.
• Rainwater is stored in an underground tank and used for toilets.
• For a better room climate, radiant heat is installed in the walls and the floors.