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21 calculators · United Kingdom
United Kingdom21
- Bills & tariffs
Price cap estimate
Choose your region, payment method and energy use to estimate yearly and monthly bills. See unit prices and standing charges, or compare a supplier quote.
- Appliances
Appliance running cost
Enter appliance power, running hours and your electricity price. See energy use and costs from an hour to a year, including an assessed on-and-off cycle.
- Appliances
Dehumidifier cost
Use your dehumidifier power, running hours and tariff to estimate electricity costs. You can also compare the cost of drying one laundry load with a tumble dryer.
- Bills & tariffs
Economy 7 savings
Enter your day and night use, unit prices and standing charges. Compare yearly bills with a single-rate tariff and find the night-use share needed to break even.
- Heating & cooling
Electric vs gas heating
Use heater power, running hours, boiler efficiency and your fuel prices to compare electric and gas heating costs. See the energy needed and weekly cost difference.
- Heating & cooling
Heat pump vs boiler
Start with heating gas use or useful heat demand, then add boiler efficiency, heat pump performance and prices. Compare running costs and any gas standing charge that remains.
- Solar & EV
EV charging cost
Enter mileage, vehicle efficiency and your home and public charging mix. Estimate charging energy, cost per distance and running costs using your selected electricity prices.
- Pools & water
Hot tub running cost
Use measured electricity use or a heater and pump schedule to estimate hot tub running costs. Enter water volume and temperatures to price a separate warm-up.
- Appliances
Tumble dryer cost
Use energy per dryer load, loads per week and your electricity price. Estimate cost per load, monthly averages and yearly use for your drying routine.
- Heating & cooling
Electric blanket vs heating
Enter blanket power and use, then describe the electric heater or central heating being compared. See nightly and monthly energy costs for your entered scenarios.
- Heating & cooling
Heat pump size
Bring assessed design heat loss and the proposed heat pump output at matching temperatures. Check the capacity gap rather than choosing equipment from floor area alone.
- Solar & EV
Solar and battery payback
Enter assessed solar generation, home use, battery delivery, export prices and your quote. See first-year energy benefit and the simple payback of the entered system.
- Solar & EV
EV vs petrol
Use distance travelled, vehicle efficiency, charging mix and petrol prices to compare energy costs. See monthly and yearly differences for the same travel distance.
- Appliances
Air fryer vs oven
Enter appliance power or energy use, cooking time and prices for each meal. Compare air fryer and oven costs per meal and across your yearly routine.
- Heating & cooling
Home heat loss
Enter assessed heat transfer through the building and ventilation, plus indoor and outdoor temperatures. Estimate design heat loss and see the fabric and ventilation parts.
- Solar & EV
Solar, battery and EV
Enter yearly solar generation, household demand and energy allocated to a battery and EV. Follow the energy balance through home use, grid purchases and exports.
- Appliances
Induction vs gas cooking
Enter measured input power, cooking time, heating-on share and fuel prices for each appliance. Compare induction and gas costs per meal and over a year.
- Heating & cooling
Smart thermostat savings
Enter baseline heating energy, your assessed reduction range, fuel price and thermostat cost. Estimate annual savings, remaining heating costs and simple payback.
- Appliances
Old fridge cost
Compare annual electricity use for your old and proposed fridge using the same price. See yearly running costs and how savings compare with the replacement price.
- Solar & EV
Power station runtime
Enter usable battery capacity, conversion efficiency and the devices you want to run. Estimate runtime and check the entered load against the power station output.
- Appliances
Pc electricity cost
Use measured active and idle power with the hours spent in each state. Estimate your computer setup electricity use, daily costs and monthly averages.