Renewable energy and heat pumps
Assess PV yield, storage, EVs and heat pumps with transparent annual balances.
Enter site and demand, review assumptions, and compare energy and cost metrics.
Calculators in this category
Heat-pump annual cost
Combine heat demand, SCOP, tariff and CO₂ into energy and cost.
Open calculator →PV yield and self-consumption
Calculate yield, autarky and grid import from site, orientation and demand profile.
Open calculator →PV battery sizing
Pre-size usable and nominal storage from PV, demand and target autarky.
Open calculator →PV, battery and EV
Balance household, EV, PV and storage together.
Open calculator →PV payback and LCOE
Determine LCOE, system value and simple payback from cost and yield.
Open calculator →Battery Energy Calculator: Ah to Wh
Calculate the nominal energy of a battery in Wh from voltage and charge capacity in Ah.
Open calculator →Battery Runtime Calculator
Calculate how long a battery can supply a constant electrical load.
Open calculator →EV Annual Energy Consumption Calculator
Calculate the annual electricity use of an electric car from annual mileage and consumption.
Open calculator →Solar Panel Count Calculator
Calculate how many identical PV modules are needed for a target PV system capacity.
Open calculator →PV Power Calculator from Area and Efficiency
Calculate the theoretical peak power of a PV area from irradiance, area and module efficiency.
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