How to Lower Your Electricity Bill: What Actually Saves Money
The changes that measurably cut a household electricity bill, ranked by how much they save versus how much effort they take.
Short answer: Focus on heating, hot water and tumble drying — together they are usually over 60% of a household bill. Lowering your thermostat by 1°C, washing at 30°C and air-drying laundry typically saves 8–12% a year with no purchase required.
Most advice about switching off standby lights is technically true and financially trivial. The bill is dominated by anything that heats or moves heat, so that is where to look first.
Ranked by annual saving
| Change | Effort | Typical annual saving |
|---|---|---|
| Thermostat down 1°C | One minute | 6–10% |
| Air-dry instead of tumble dry | Ongoing habit | 80–150 |
| Wash at 30°C | One setting | 30–50 |
| Draught-proof doors and windows | An afternoon | 40–90 |
| Switch to LED bulbs throughout | An hour | 20–40 |
| Turn off standby devices | Ongoing | 10–25 |
The three habits that matter most
- Heat the rooms you use, not the whole property. Thermostatic radiator valves cost little and pay back in one winter.
- Run the dishwasher and washing machine only when full, on eco settings — they use less water and therefore less heating energy.
- Check your hot water cylinder thermostat: 60°C is safe and sufficient; many are set far higher.
Find your own biggest user
A plug-in energy monitor costs about 15 and will tell you in a week which appliance is quietly expensive. Old fridges and electric heaters are the usual culprits.
What is usually not worth it
Unplugging phone chargers, buying eco gadgets and replacing working appliances early rarely pay back. Replace an appliance when it fails, and buy the most efficient model you can then.
Want to go further? Read our guide on How to Fix One Cold Room in an Otherwise Warm House or browse everything in Home.
Frequently asked questions
- Does turning the heating off when out save money?
- Yes, for absences longer than a few hours. For short periods a lower constant setting is more comfortable and costs about the same.
- Are smart thermostats worth buying?
- They typically save 5–10% if your schedule is irregular. If you are home at predictable times, a basic timer achieves most of the same.
- Is it cheaper to run appliances at night?
- Only on a time-of-use tariff. On a flat tariff the time of day makes no difference.
Sources & references
About the author
Elena Marsh
Senior Editor, Money & Consumer
Elena has covered personal finance and consumer rights for over a decade. She translates dense financial rules into steps readers can act on the same day.
All articles by Elena Marsh →Related articles
How to Fix One Cold Room in an Otherwise Warm House
A single cold room is almost always a balancing, draught or airflow problem rather than a boiler problem, and most fixes cost nothing.
· 6 min read
When Should You Turn the Heating On in Autumn?
The indoor temperature that matters, why the calendar date is the wrong trigger, and the cheap steps to take first.
· 6 min read
How to Stop Condensation on Windows When Autumn Starts
Why the first cold nights create puddles on the glass, and the ventilation routine that clears it in three days.
· 5 min read
What to Plant in Autumn for a Low-Effort Garden Next Year
Autumn planting does most of the work for you. What goes in now, what to leave, and the mistake that wastes a whole season.
· 6 min read
Read next
When Should You Turn the Heating On in Autumn?The indoor temperature that matters, why the calendar date is the wrong trigger, and the cheap steps to take first.
Comments
Questions, corrections and experiences from readers are welcome. We read everything and update articles when you spot something wrong. Please keep it civil — see our comment policy.
No comments on this article yet — be the first.