KilowattKit

What it does

KilowattKit offers 29 free home energy calculators for electricity bills, solar payback, EV charging, and appliances. Powered by official data from EIA, Ofgem, and AER. Every formula shown, every source cited. No email or signup required. Works for US, UK, Canada & Australia.

Free home energy calculators backed by official data. Estimate your electricity bill, EV charging costs, solar payback, appliance costs — no email required.

Estimate your electricity bill, solar payback, EV charging, and appliance running costs — instantly. Every formula shown. Every source cited. 29 tools across 6 categories — sized from a single bulb to a whole-home solar system. Bill calculator, kWh cost, appliance energy, and phantom load. Heat pump vs furnace, AC cost, space heater, smart thermostat. Panel size, payback period, SEG export earnings, and UK grant eligibility. Home charging cost and Level 1 vs Level 2 charger comparison. Fridge, water heater, dryer, washer, dishwasher, LED vs incandescent. R-value, window heat loss, ceiling fan vs AC, pool pump, hot tub, generator. We cite our sources, show our work, and never sell your data.…from kilowattkit.com

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