https://wattfigures.com/ Interactive calculators and plain-English running costs for every appliance in your home: electricity use, standby drain, EV charging and more. en https://wattfigures.com/guides/contracted-power-spain/ https://wattfigures.com/guides/contracted-power-spain/ How Spain's contracted power charge works, why tripping your breaker means you're undersized, and how to size it right without overpaying. Wed, 22 Jul 2026 00:00:00 GMT https://wattfigures.com/guides/eu-energy-label-explained/ https://wattfigures.com/guides/eu-energy-label-explained/ How to read the EU energy label — what the letter grade means, why kWh/year predicts your bill, and where the old A+++ scale went. Wed, 22 Jul 2026 00:00:00 GMT https://wattfigures.com/guides/why-is-my-electricity-bill-so-high/ https://wattfigures.com/guides/why-is-my-electricity-bill-so-high/ Before you panic about a shocking bill, check these usual suspects — from an appliance stuck running to a contract that no longer fits your home. Wed, 22 Jul 2026 00:00:00 GMT https://wattfigures.com/guides/heat-pump-vs-gas-boiler-running-cost/ https://wattfigures.com/guides/heat-pump-vs-gas-boiler-running-cost/ We compare the heat pump vs gas boiler running cost, using math and efficiency ratings to help you determine which system is cheaper for your home. Sun, 19 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/air-conditioning/ https://wattfigures.com/calculators/air-conditioning/ See what your air conditioner costs to run per hour, per day and per cooling season from its power draw, daily hours and your electricity price. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/electricity-cost/ https://wattfigures.com/calculators/electricity-cost/ Work out what any appliance costs to run per day, month and year from its wattage, hours of use and your price per kWh. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/ev-charging/ https://wattfigures.com/calculators/ev-charging/ Estimate what charging your electric car at home costs — per full charge, per 100 km and per year — from your battery, efficiency and price per kWh. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/heat-pump-vs-gas/ https://wattfigures.com/calculators/heat-pump-vs-gas/ Compare a year of heating with a heat pump versus a gas boiler using your heat demand, the heat pump COP, boiler efficiency and fuel prices. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/laundry-cost/ https://wattfigures.com/calculators/laundry-cost/ Estimate what your washing machine and tumble dryer cost per cycle, per week and per year from their energy per cycle and your electricity price. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/led-vs-halogen/ https://wattfigures.com/calculators/led-vs-halogen/ See how much you save each year by switching bulbs to LED, and how fast the change pays for itself, based on wattages, hours and your electricity price. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/solar-payback/ https://wattfigures.com/calculators/solar-payback/ Estimate how many years a home solar system takes to pay for itself from its size, cost, yearly yield, self-consumption and your electricity and export prices. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/calculators/standby-power/ https://wattfigures.com/calculators/standby-power/ Add up what your always-on gadgets cost while 'off'. Estimate the yearly and monthly cost of standby (vampire) power across your home. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/guides/how-to-cut-standby-power/ https://wattfigures.com/guides/how-to-cut-standby-power/ A step-by-step plan to find and kill the vampire power your devices draw while switched off, and how much you can realistically save. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/guides/time-of-use-tariffs-explained/ https://wattfigures.com/guides/time-of-use-tariffs-explained/ What time-of-use and off-peak electricity tariffs are, who they suit, and how shifting usage to cheaper hours can cut your bill. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/guides/understanding-your-electricity-bill/ https://wattfigures.com/guides/understanding-your-electricity-bill/ Decode your electricity bill line by line: the unit rate, standing charge, taxes and what actually drives the total you pay each month. Sat, 18 Jul 2026 00:00:00 GMT https://wattfigures.com/guides/vampire-device-audit-checklist/ https://wattfigures.com/guides/vampire-device-audit-checklist/ A printable room-by-room checklist to hunt down the always-on devices quietly adding to your electricity bill, and what to do about each. Sat, 18 Jul 2026 00:00:00 GMT