About these calculators
CanWeFind works out what things cost to run on your own rates, rather than on a national average that describes nobody's house.
Where the figures come from
Default unit rates and standing charges are Ofgem's published price cap figures for customers paying by direct debit in England, Scotland and Wales. The set currently in use covers 1 July to 30 September 2026 and was last checked on 21 August 2026.
Every calculator lists its own sources at the foot of the page, each with the date it was last confirmed. Nothing here asks you to take a number on trust — the source link is always there to check it against.
How often they are replaced
The price cap changes every three months. Rather than relying on someone remembering, the site refuses to publish once the figures pass their review date: the build fails, and it warns for three weeks beforehand. A page quoting last quarter's rate cannot quietly sit here for a year.
Rates live in one place rather than being written into each calculator, so an update reaches every page at the same moment. There is no version of this site where the appliance calculator is current and the tariff comparison is not.
If a figure looks wrong
Email hello@canwefind.com and say which page and which number. Corrections are made at the source, so a fix applies everywhere at once rather than to the one page that was reported.
What this is not
These are estimates for comparing options — not financial advice, not a quote, and not a substitute for your bill. Appliance wattages vary between models, thermostats cycle on and off, and tariffs carry terms this cannot see. Check anything that matters against your own account before acting on it.