Solar yield
A year’s AC energy from array size, a typical regional yield and one or two roof planes.
Open a calculatorSolar sizing
Suggested size is yearly use multiplied by the coverage share, then divided by the same yield and orientation factors as the yield calculator. A heat pump or an electric car can double a house’s yearly kilowatt-hours; put the total here, not the lights alone. Module count uses the wattage you enter. Roof area is optional and assumes about 225 W per square metre (a 485 W module on roughly 2.2 m²). This is not a system design and not a grid-connection study.
Annual grid use — add lights, heating and EV charging; a heat pump can double yearly kWh.
Annual grid use — add lights, heating and EV charging; a heat pump can double yearly kWh.kWh
Share of annual use you want PV to offset — 70% is a typical sketch, not a self-consumption guarantee.
Share of annual use you want PV to offset — 70% is a typical sketch, not a self-consumption guarantee.%
kWh/kWp
%
Nameplate wattage of one module — the panel count follows from the suggested system size.
Nameplate wattage of one module — the panel count follows from the suggested system size.W
Optional area cap — about 225 W/m² (a 485 W module on ~2.2 m²); leave blank to skip the fit check.
Optional area cap — about 225 W/m² (a 485 W module on ~2.2 m²); leave blank to skip the fit check.m²
Suggested size
6.02 kWp
Modules
13
Array area
28 m²
Suggested size: 6.02 kWp
Coverage is of yearly kilowatt-hours, not of a single winter bill. You will still import power in winter.
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An educational estimate. Not medical, tax or credit advice.