KiloWiseFree tool · No account
Whole-home bill audit + savings planner
Enter your bill — kWh, rate, standing charge — and get a ranked plan: which fixes pay back first, in money and months. The appliance breakdown is inside it.
Tools
Four free tools. All run in your browser — nothing is sent anywhere, nothing needs an account. Every tool asks your country first, because rates differ by country. Every result is labelled an estimate, with its formula shown.
Free tool · No account
Thermostat setback simulator
How much is a lower thermostat worth? Uses the US Department of Energy rule: a 7–10°F setback for 8 hours a day can save up to 10% of heating and cooling costs a year.
Free tool · No account
Insulation / draught-proofing payback checker
Enter your quote and your estimated annual saving. It ranks fixes by payback — shortest first — and shows the 5-year net.
Free tool · No account
Standby-power estimator
List the devices left on standby, with watts from their labels, and see what they cost a year.
What the tools do not do
They do not guarantee a saving, quote a price for your home, or replace a qualified electrician, gas engineer or energy assessor. For electrical or gas work, get a qualified professional.