How the numbers are worked out
Every figure here is arithmetic you can repeat yourself: wattage, hours of use, and your own rate per kilowatt-hour.
- Running costs, calculated
- Illustrative figures, labelled
- Every assumption stated
Where the numbers come from
We start from an appliance's rated wattage or a typical figure for its class, apply the hours it actually runs, and price it at a stated rate per kilowatt-hour. These are calculations, not measurements of a specific unit.
Why the figures are illustrative
Rates, runtimes and models vary, so worked examples are labelled as illustrative and name the price, wattage and rate they used. Change any input and the answer changes with it.
How we make money
At the time of writing this site carries no affiliate links and no advertising. No link earns a commission and no company pays for coverage. If that ever changes, the disclosure page will say so first and any paid link will be marked where it appears.
How a running-cost figure is worked out
Every BenchNest running-cost guide follows the same path from a published specification to a number you can re-run yourself. These are the rules, including what we do not do.
- We do not buy or test the gearBenchNest owns none of the products on this site. Figures are calculations from published specifications, not measurements of a specific unit, and there are no photographs of our own.
- We start from rated wattageEvery figure begins with an appliance’s rated wattage, or a typical figure for its class where a rating is not published, and says which it used.
- Every assumption is on the pageThe hours of use and the rate per kilowatt-hour are named, so you can substitute your own and get a different, equally checkable answer.
- Figures are labelled illustrativeRates, runtimes and models vary, so worked examples say so. Affiliate links are disclosed and never change a figure or a conclusion.
Questions, corrections, or gear to cover?
Spotted an assumption that looks wrong, or want an appliance covered? We read every message and correct the record when we need to.