Guideline: 400m² real estate, a comfortable one family house and the maximal possible earnings by delivering electric power porduced by solar energy. The solution was planned 1991.
GEMINI plus energy house, much advanced in time
If an architect would have the task to gain maximum profits from the German low for delivering solar electricity, than he would have to invent the GEMINI house again.
Inhabited solar power plant
150m² photovoltaic tracked after the sun. This gives an abundant yearly yield of 20.000 kWh or 11,840.-EUR. If no neighbour disturbs the solar irradiation, possible on 400 m² real estate. From 28.70 earnings per squaremeter ground can a farmer only dream.
Turn mechanic paid with 5,000 kWh a year
A turnable house costs naturally more. But the difference between 150m² towards south and 150m² sun tracking is about 5,000 kWh a year. This makes 2,870.-EUR per year to pay the turn mechanic.