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Countries · GBP

Electricity-cost calculators for United Kingdom

Use pounds sterling, your own tariff, and device-specific operating models—without pretending one national average fits every household.

Billing context

Use the rate that changes with consumption.

Unit rates and standing charges vary by region, payment method, meter, and tariff. The price cap applies to eligible default tariffs and is reviewed regularly.

Verified reference · Confidence A 99/100GBP 0.2611/kWh

Ofgem default tariff cap, Great Britain. Effective 2026-07-01 to 2026-09-30. Your own marginal bill rate remains the better input when your plan differs.

Source: Ofgem price-cap unit rates and standing charges ↗

GBP calculator

Start with any appliance.

A current official reference is prefilled. Edit it when your utility, plan, usage tier, tax treatment, or bill differs.

01

Your scenario

Change any value. Results update instantly.

Active runtime accounts for cycling. Use 100% for devices that draw the rated power continuously.

02

Your reading

Planning estimate · based on your inputs
Estimated monthly cost£3.80

Likely planning range £3.42–£4.18

Per day£0.12
Per active hour£0.03
Per year£45.62
Energy / month14.6 kWh

FormulakW × runtime × tariff

Month52 weeks ÷ 12

Data qualitySelf-entered estimate

Local high-intent tools

Built for United Kingdom

These pages combine the device model with local billing structure, a current source, and market-specific checks.

Local calculator

Electric heater

Portable electric heating can become expensive quickly because resistive heaters convert electricity at the full unit rate whenever their elements are active.

Calculate local cost ↗Local calculator

Clothes dryer

Frequent tumble-dryer use can be a visible household load, while heat-pump and resistance dryers have very different energy profiles.

Calculate local cost ↗Local calculator

Dehumidifier

Damp weather, laundry drying, room temperature, and target humidity all affect how long a dehumidifier’s compressor or desiccant heater runs.

Calculate local cost ↗

UK electric-heating answers

Calculate the question people actually ask.

Start with a direct worked answer, then edit the unit rate and heating pattern for your home.

Hourly cost

2 kW heater cost per hour

Hourly, daily and monthly figures with an editable Ofgem reference.

Open hourly calculator ↗Monthly cost

Electric heating cost per month

Compare wattage, scheduled hours and thermostat activity over 30 days.

Open monthly guide ↗

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Calculation standards

Visible inputs. Reproducible results.

WhoPowerCost Lab's research desk maintains the formulas, market notes, and worked examples.

HowEnergy, tariff, and behavioural assumptions stay separate so readers can replace one input without hiding the others.

WhyThe page exists to answer an operating-cost decision. Advertising never changes a formula, default, or recommendation.