Calculators

Calculate your energy

Everything runs in your browser, nothing is sent anywhere. Results are estimates; adjust prices to your own plan.

Appliance consumption

What uses the most at home and what it costs. The fridge is rarely to blame; the tumble dryer often is.

How many years until the roof pays for itself, with and without subsidy. No marketing, just numbers.

Yearly heating cost of a heat pump and a gas furnace, and the payback of the investment.