Clear assumptions.
Useful answers.
Our calculation method
Electrical energy in kWh equals power in kW multiplied by hours of use. Cost in pounds equals kWh multiplied by pence per kWh divided by 100. We use 365 days a year, 365/7 weeks and 12 months. We round displayed currency only. Monthly and daily amounts are annual averages, not the charge for a particular calendar month or an active-use day. Annual projections hold your entered tariff constant; they do not predict future rates. For time-of-use tariffs, calculate each rate’s energy separately and add the costs.
The reference electricity rate
The default of 26.32p/kWh is the published GB average direct-debit electricity unit rate for 1 October–31 December 2026, checked 8 November 2026. It is an example, not your personal tariff. Rates vary by region, payment method and contract; Northern Ireland has a different market. Ofgem source.
What an appliance label tells you
Energy labels may use kWh/year, kWh/cycle or kWh/100 cycles. The tool asks for the unit explicitly. Annual kWh is used directly, without scaling by your weekly cycles. For an older annual tumble-dryer label, that represents the label’s standard usage rather than your personal number of loads; use documented per-cycle energy to model your own frequency. Test programmes and scales differ; compare like-for-like capacity and programme. UK Government energy labelling guidance.
Illustrations are not measurements
Preset wattages and cycle values are editable examples, not measured averages or verified product specifications. Thermostats, loads, ambient temperature and standby use can change actual consumption. Appliance-only estimates exclude standing charges because an extra appliance does not generally add another daily charge. The whole-bill day/night comparison explicitly includes 365 days of each entered standing charge.
How commercial information is published
Only records from owner-approved licensed sources pass into the commercial catalogue. They require model identity, energy basis, source evidence, verification and expiry dates. Expired offers are hidden. Prices are snapshots; confirm them with the retailer. We do not invent customer ratings or hands-on tests.
Editorial automation
Local AI may propose changes for owner review. It cannot publish unsupported claims. Validated structured data can update automatically; rejected records are held in the owner dashboard. A source check confirms a recorded source, not independent laboratory testing.