The phovoltaics are mounted on both sides of the roof.

Here you can see a chart about the monthly production of solar heat and electricity.

Here you can see a chart about the best day production of solar heat and electricity.

Even by -15 degrees outside we keep the 155 m2 house warm with this single heater unit by postheating the incoming air from the heat exchanger to 40 degrees.

See more about the technology behind the passive house here

See the construction of the passive house here

updated 2012, november 9 th.