How to Actually Cut Your Electricity Bill: An Electrician’s Honest Guide

Most advice about cutting your electricity bill is written by people who’ve never opened a consumer unit. It fixates on the small stuff — unplugging phone chargers, switching off standby — and ignores the handful of things that actually move the needle. Here’s an honest run-through from electricians who spend their days in Dorset homes: what genuinely saves money, what barely registers, and what’s worth spending money on to save money.

We’re Dorset Electrical Solutions, NAPIT-approved and based in Ferndown. We’re not selling you a miracle gadget — and we’ll be upfront below about which upgrades pay back and which don’t.

First: know what’s actually using it

Almost everything on your bill comes from things that make heat or move water. Roughly in order: heating and hot water, electric showers, tumble dryers, ovens and hobs, kettles, washing machines and dishwashers. Then, a long way behind, everything else.

Your telly on standby costs pennies a year. A 20-minute electric shower every day costs real money. If you only fix one thing, fix a big one — and ignore anyone who tells you the answer is switching off at the wall.

The things that genuinely save money

1. Shift your usage off-peak (the biggest lever for most people)

If you have a smart meter, time-of-use tariffs charge dramatically less overnight. Run the dishwasher, washing machine and any EV charging then and you’re paying a fraction of the daytime rate for the same electricity. This is the single most effective change available to most households and it costs nothing to make. It’s especially compelling if you have an EV — see our guide to home EV charger installation.

2. Sort the heating controls

If you heat with electricity, controls matter more than almost anything. Zoning, decent thermostats and timers that match how you actually live mean you stop heating an empty house. Turning the thermostat down by a degree is the oldest advice going because it works.

3. LED lighting — but do it properly

If you still have halogen downlights, replacing them is a genuine win: a halogen burns roughly ten times the power of its LED equivalent, and a kitchen with a dozen of them adds up. The caveat: cheap LEDs flicker, die early, and often don’t play nicely with old dimmers. Done properly — right fittings, compatible dimmers — an LED upgrade pays for itself and looks better. Done badly, you’ll be back up the ladder in a year.

4. Deal with the tumble dryer

It’s usually the second-biggest single consumer in a home after heating. A heat-pump dryer uses a fraction of what a vented one does. If yours is old and you use it constantly, it’s one of the few appliance replacements with a genuinely fast payback.

The things that barely matter (but get all the attention)

• Unplugging chargers. A modern charger draws almost nothing when idle. Do it for tidiness, not savings.
• Standby. Modern appliances are legally limited to tiny standby draw. Old kit is worse, but it’s still small change next to your shower.
• Boiling “just enough” water. Real but tiny. Fill the kettle how you like.
• “Energy saving” plug-in gadgets. The devices sold online claiming to cut your bill by 30% by “stabilising” your supply do not work. They are, bluntly, a scam. Please don’t buy one.

The bigger upgrades: honest payback

Solar PV

Solar genuinely works in Dorset — we’re one of the sunnier parts of the UK, and our sister company DES Renewable Energy fits systems across the county. But be realistic: the return depends on how much you use during the day. If the house is empty 8am–6pm and you export most of it, the payback stretches out. Add a battery, or shift usage into daylight, and the numbers improve a lot.

Batteries

A battery’s real trick isn’t storing sunshine — it’s letting you buy cheap overnight electricity and use it at peak. Paired with the right tariff, that works even in winter.

Anything promising 50% off with no lifestyle change

Treat with deep suspicion.

The unglamorous truth

The homes we see with genuinely low bills aren’t the ones with the cleverest tech. They’re the ones where someone got the tariff right, the heating controls right, and stopped heating and drying things unnecessarily. The kit helps — it just isn’t the main event.

Frequently asked questions

Does turning lights off in an empty room really matter?

With LEDs, honestly, barely — you’re saving a few watts. It’s a decent habit, not a strategy.

Is it cheaper to leave the heating on low all day?

No. Heating a house you’re not in loses energy to the outside. Heat it when you need it — good controls make that easy.

Are those plug-in energy saver boxes real?

No. They don’t reduce domestic bills. Save your money.

Will solar work on a north-facing roof?

Poorly. East–west is fine, south is best, north isn’t worth it. A proper survey will tell you honestly — including telling you not to bother.

Should I get a smart meter?

If you want a time-of-use tariff, you’ll need one — and that tariff is where the real saving is.

Want a straight answer about your place?

If you’re weighing up LED lighting, an EV charger, solar or just want to know where your money’s going, give us a shout. We’ll tell you what’s worth doing — including when the answer is “nothing”.