Solar sizing
How large a photovoltaic array would cover a chosen share of yearly electricity use.
Open a calculatorSolar yield
Annual energy is array size in kWp multiplied by a typical specific yield, then adjusted for tilt and azimuth. You can split the array across two planes — a roof and a shallower ground rack, for example. The regional figures are planning averages for a south-facing roof at about 30–35°, already as AC after a performance ratio around 80%. They are not a PV*SOL or PVGIS run for your address and not a quotation. A mixed south-east 35° plus south-west 10° array on the Baltic coast often lands nearer 880 kWh/kWp than a brochure 1 040.
Installed DC capacity in kilowatts peak — module count × wattage per module, not roof area.
Installed DC capacity in kilowatts peak — module count × wattage per module, not roof area.kWp
kWh/kWp
Share of the array on a second roof plane — e.g. 30% on a shallow south-west ground rack.
Annual energy lost to trees, chimneys or neighbouring roofs — enter 0 if the array is unobstructed.
Annual energy lost to trees, chimneys or neighbouring roofs — enter 0 if the array is unobstructed.%
Estimated yearly output
9,306 kWh
Average monthly output
776 kWh
Yield at this orientation
931 kWh/kWp
Estimated yearly output: 9,306 kWh
These are typical figures for Central Europe, not a survey of your roof. Snow, trees, inverter clipping and a battery’s charge cycle will move the real year.
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An educational estimate. Not medical, tax or credit advice.