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What uses the most electricity in your home?

It’s rarely the thing you’d guess. Your electricity bill is mostly a handful of big hitters plus a quiet background hum that runs day and night — and once you know which is which, you know exactly where to look to save.

• Anything that makes heat. This is the golden rule: heating things costs the most. Electric heating, the immersion/hot water, the oven, the kettle, the tumble dryer, the shower — they draw a lot of power because turning electricity into heat is expensive. A single load in the tumble dryer can cost more than a whole evening of lights and telly.
• Your always-on base load. The stuff that never switches off: the fridge and freezer, the router, that second freezer in the garage. Each is small, but running 24/7 it quietly stacks up into a real slice of the bill. More on what drives a high bill →
• Phantom (standby) load. Tellies, consoles, chargers and set-top boxes sipping power while “off”. Real, but usually smaller than people fear — worth a tidy-up, but it’s not where the big money is.
• The things that feel expensive but aren’t. Lights (especially LEDs), phone chargers and the laptop barely register next to anything that heats. Chasing the small stuff while a tumble dryer runs daily is polishing the wrong thing. What actually lowers the bill →

The trouble with any “what uses the most” list is that your home isn’t average. Joulely reads your half-hourly data and shows where your electricity actually goes — your real always-on load and your peaks — so you tackle your biggest hitter first, not a guess. How to read your smart meter →