UK electricity prices have doubled since 2021. The average UK household now pays £1,900 per year for gas and electricity combined, with electricity making up about £800-£1,000 of that. In 2026, the Energy Price Cap set by Ofgem sits at 30.11p per kWh for electricity and 7.51p per kWh for gas — still historically high despite recent falls.
The good news: you can cut your bill by 20-40% without sitting in the dark or wearing three jumpers. This guide shows you exactly how, with real numbers, specific products, and step-by-step instructions.
Every tip below is tested, costed, and ranked by payback time. No fluff. No generic advice. Just what works in UK homes.
Know Your Starting Point: The £800-£1,000 Breakdown
Before you cut, know where your money goes.
Table
| Appliance | Average Annual Cost | % of Electric Bill |
|---|---|---|
| Heating (electric) | £400-600 | 40-50% |
| Hot water (electric) | £150-250 | 15-20% |
| Fridge and freezer | £80-120 | 8-12% |
| Washing machine | £60-80 | 6-8% |
| Tumble dryer | £80-150 | 8-15% |
| Lighting | £60-80 | 6-8% |
| TV and devices on standby | £50-80 | 5-8% |
| Cooking (oven, hob, kettle) | £80-120 | 8-12% |
| Dishwasher | £50-70 | 5-7% |
| Computer and home office | £40-60 | 4-6% |
Total: £1,050-1,610 for all-electric homes, or £800-1,000 for homes with gas heating.
Your first step: Check your smart meter or last 3 bills. Find your monthly kWh usage. The UK average is 242 kWh per month for electricity (2,900 kWh per year). If you use more, you have more to save.
Section 1: Heating — Your Biggest Saving (40-50% of Bill)
Heating is where most money goes. Small changes here save the most.
1. Lower Your Thermostat by 1°C (Save £100-150/year)
Table
| Setting | Annual Cost | Saving vs. 21°C |
|---|---|---|
| 24°C | £1,400 | £0 baseline |
| 21°C | £1,100 | £300 |
| 20°C | £950 | £450 |
| 19°C | £800 | £600 |
The 1°C rule: Every 1°C reduction saves £100-150 per year. Most people cannot tell the difference between 20°C and 21°C. Try 20°C for a week. If comfortable, try 19°C.
Where to set it:
-
Living areas: 19-20°C
-
Bedrooms: 16-18°C (better for sleep)
-
Hallways: 15-16°C
-
Unused rooms: 12-15°C or turn radiators off
How to do it: Turn your thermostat down 1°C today. Wait 3 days. If comfortable, try another 1°C. Stop when you feel cold.
2. Use Thermostatic Radiator Valves (TRVs) Properly (Save £75-125/year)
TRVs control each radiator individually. Most UK homes have them. Most people use them wrong.
The TRV settings explained:
Table
| Setting | Temperature | Best For |
|---|---|---|
| * (frost) | 5-7°C | Unused rooms, prevents pipes freezing |
| 1 | 12°C | Hallways, spare rooms |
| 2 | 16°C | Bedrooms |
| 3 | 20°C | Living rooms (most used) |
| 4 | 24°C | Bathrooms (brief use) |
| 5 | 28°C | Rarely needed |
Common mistakes:
-
Setting all TRVs to 5 (wastes money, overheats rooms)
-
Turning TRVs off completely in unused rooms (risk of damp and mould)
-
Not checking TRVs are working (seized valves are common)
How to check: Turn a TRV to 5. The radiator should get hot. Turn to 1. It should cool down. If not, the valve is seized. Replace it (£15-25 from Screwfix or B&Q).
The “one room at a time” rule: Set each room’s TRV to match how you use it. Living room at 3. Bedroom at 2. Hallway at 1. Unused room at * (star). This saves £75-125 per year without any discomfort.
3. Draught-Proof Your Home (Save £50-100/year)
Draughts let warm air out and cold air in. Fixing them is cheap and fast.
Table
| Draught Source | Fix | Cost | Saving/Year |
|---|---|---|---|
| Doors (gaps) | Brush strip or rubber seal | £5-15 | £15-25 |
| Windows (gaps) | Self-adhesive foam strip | £5-10 | £10-20 |
| Letterbox | Brush or flap seal | £5-10 | £5-10 |
| Keyhole | Keyhole cover | £2-5 | £2-5 |
| Chimney (unused) | Chimney balloon or cap | £15-25 | £50-80 |
| Floorboards | Fill gaps with silicone or rope | £10-20 | £10-20 |
| Skirting boards | Seal with caulk | £5-10 | £5-10 |
Total cost: £50-100. Total saving: £100-170 per year. Payback: 6-12 months.
Where to buy: Screwfix, B&Q, Wickes, Amazon. Look for “draught excluder” or “weatherstrip.”
The chimney rule: An unused chimney can suck out 20% of your heat. A chimney balloon (£15-20) inflates in the flue and blocks the airflow. Remove it if you light a fire. Easy to install, easy to remove.
4. Insulate Your Loft (Save £150-250/year)
Heat rises. Without loft insulation, 25% of your heat escapes through the roof.
Table
| Loft Insulation | Cost | Saving/Year | Payback |
|---|---|---|---|
| 0 to 270mm (from nothing) | £300-500 (professional) or £150-250 (DIY) | £150-250 | 2-3 years |
| Top up to 270mm | £100-200 | £50-100 | 2-3 years |
The 270mm rule: Current UK building standards recommend 270mm (11 inches) of mineral wool insulation. Many UK homes have 100mm or less. Topping up saves £50-100 per year.
DIY vs. professional: DIY is cheaper but messy. Wear mask, gloves, and long sleeves. Mineral wool irritates skin and lungs. Professional installers charge £300-500 but do it in a day with no mess.
Grants: Check if you qualify for ECO4 or Great British Insulation Scheme grants. These cover free or subsidized insulation for low-income households and some other groups. Visit gov.uk or contact your energy supplier.
5. Get a Smart Thermostat (Save £100-200/year)
Smart thermostats learn your habits and heat only when needed.
Table
| Thermostat | Cost | Features | Best For |
|---|---|---|---|
| Hive | £150-200 | App control, geolocation, schedules | British Gas customers, easy setup |
| Nest (Google) | £180-220 | Learning mode, energy history, auto-schedule | Tech-savvy users, detailed data |
| Tado | £180-250 | Room sensors, open window detection, multi-zone | Larger homes, room-by-room control |
| Drayton Wiser | £120-180 | Budget option, basic smart features | Cost-conscious, simple needs |
| Ecobee | £200-250 | Voice control, remote sensors, detailed reports | Advanced users, smart home integration |
How they save:
-
Heat only when you are home (geolocation)
-
Lower temperature automatically when you sleep
-
Detect open windows and pause heating
-
Learn how long your home takes to warm up (pre-heat efficiently)
Real user data: Nest claims average savings of 10-12% on heating bills. Tado claims up to 31% with room sensors. Actual UK user reports suggest £100-200 per year for typical homes.
Installation: Most are DIY. Replace your existing wired thermostat. Takes 30-60 minutes. If unsure, electrician cost: £80-120.
6. Use Heating Timers Correctly (Save £50-100/year)
If you cannot afford a smart thermostat, use your existing timer better.
Table
| Bad Timer Setting | Why It Wastes Money | Better Setting |
|---|---|---|
| Heating on all day | Heats empty house | On 1 hour before wake, off when leave |
| Heating on overnight | You sleep better cool | Off at 10 PM, on 1 hour before wake |
| Heating off completely when away | House gets cold, takes hours to reheat | Set to 12-15°C frost protection |
| One timer for whole week | Weekend schedule differs | Separate weekday and weekend programs |
The “setback temperature” rule: When you are out or asleep, do not turn heating off completely. Set it to 12-15°C. This prevents pipes freezing and stops the house getting so cold that reheating takes massive energy.
The “1 hour before” rule: Set heating to come on 1 hour before you wake and 1 hour before you return home. This gives the house time to warm up without wasting energy.
Section 2: Hot Water — Save £100-200/year
7. Lower Your Hot Water Temperature (Save £30-50/year)
Most UK homes have hot water set too high.
Table
| Temperature | Risk | Saving |
|---|---|---|
| 70°C+ | Scalding risk, wastes energy | Baseline |
| 60°C | Legionella risk (bacteria growth), still hot | £10-20/year |
| 55°C | Safe, comfortable, efficient | £30-50/year |
| 50°C | Slightly warm showers, may need more hot water | £40-60/year |
The 55°C rule: Set your hot water cylinder to 55°C. This is hot enough for comfortable showers and washing up. It kills Legionella bacteria (which grows below 50°C). It saves £30-50 per year.
How to check: Look at your cylinder thermostat. It is usually a dial on the tank. If you cannot find it, ask a plumber or check your boiler manual.
8. Insulate Hot Water Pipes and Cylinder (Save £30-50/year)
Table
| Insulation | Cost | Saving/Year | Payback |
|---|---|---|---|
| Cylinder jacket (80mm) | £15-25 | £20-30 | 6-10 months |
| Pipe lagging (foam tubes) | £10-20 | £10-20 | 6-12 months |
The cylinder jacket rule: If your hot water cylinder feels warm to touch, it is losing heat. An 80mm jacket reduces heat loss by 75%. Easy to fit. Ties around the cylinder.
Where to buy: Screwfix, B&Q, Wickes. Look for “cylinder jacket” or “pipe lagging.”
9. Take Shorter Showers (Save £50-100/year)
Table
| Shower Length | Annual Cost (electric shower) | Saving vs. 10 min |
|---|---|---|
| 5 minutes | £150 | £100 |
| 8 minutes | £200 | £50 |
| 10 minutes | £250 | Baseline |
| 15 minutes | £375 | -£125 |
The 4-minute rule: A 4-minute shower uses about 35 litres of water and 3.5 kWh of electricity. A 10-minute shower uses 90 litres and 9 kWh. The difference is £100-150 per year.
How to time it: Use a shower timer (£3-5 from Amazon). Or play a 4-minute song. When it ends, get out.
Low-flow showerheads: Reduce water use by 30-50% without reducing pressure. Cost: £15-30. Saving: £30-60 per year. Payback: 6-12 months.
Section 3: Appliances — Save £150-300/year
10. Switch to LED Bulbs (Save £40-60/year)
Table
| Bulb Type | Watts | Annual Cost (3 hours/day) | Cost to Buy |
|---|---|---|---|
| Old incandescent | 60W | £20 | £1 (rare now) |
| Halogen | 40W | £13 | £2-3 |
| CFL (energy saver) | 12W | £4 | £3-5 |
| LED | 6W | £2 | £2-5 |
The LED rule: LEDs use 90% less energy than old bulbs and last 15-25 years. Replace every bulb in your house. Cost: £30-60 for a typical 3-bed home. Saving: £40-60 per year. Payback: 6-12 months.
Colour temperature:
-
Warm white (2700K): Living rooms, bedrooms
-
Cool white (4000K): Kitchens, bathrooms, offices
-
Daylight (5000K+): Task lighting, SAD lamps
Where to buy: Screwfix, B&Q, Amazon, supermarkets. Look for “A++” energy rating.
11. Buy Energy-Efficient Appliances (Save £50-100/year)
When replacing appliances, check the energy label.
Table
| Rating | Efficiency | Cost to Run (washing machine, annual) |
|---|---|---|
| A+++ | Best | £30-40 |
| A++ | Very good | £40-50 |
| A+ | Good | £50-60 |
| A | Standard | £60-70 |
| B or below | Poor | £70-90+ |
The “total cost of ownership” rule: A cheaper B-rated fridge might cost £50 less to buy but £40 more per year to run. Over 10 years, the A+++ fridge saves £350.
EU energy label changes (2021): The old A+++, A++, A+ system was replaced. Now the scale is A-G, with A being best. Check the new label.
12. Use Your Washing Machine Efficiently (Save £30-50/year)
Table
| Setting | Cost Per Wash | Best For |
|---|---|---|
| 30°C eco | 15p | Everyday clothes, saves 40% vs. 40°C |
| 40°C | 25p | Towels, bedding, dirty clothes |
| 60°C | 40p | White cotton, sanitizing (rarely needed) |
| 90°C | 60p | Never needed in modern machines |
The 30°C rule: Modern detergents work at 30°C. Most clothes clean fine. This saves £30-50 per year and makes clothes last longer.
Other washing tips:
-
Fill the drum (but do not overfill)
-
Use eco mode (takes longer but uses less energy)
-
Air dry when possible (tumble dryers are expensive)
-
Clean the filter monthly (improves efficiency)
13. Ditch the Tumble Dryer (Save £80-150/year)
Table
| Drying Method | Cost Per Load | Annual Cost (3 loads/week) |
|---|---|---|
| Tumble dryer (vented) | £1.50-2.00 | £230-310 |
| Tumble dryer (condenser/heat pump) | £0.80-1.20 | £125-185 |
| Air drying (indoor rack) | £0 (plus heating cost) | £0-50 |
| Air drying (outdoor line) | £0 | £0 |
| Dehumidifier + rack | £0.30-0.50 | £45-75 |
The dehumidifier trick: In winter, dry clothes on a rack with a dehumidifier running. The dehumidifier removes moisture, preventing damp and mould. Cost per load: 30-50p. Much cheaper than a tumble dryer.
Dehumidifier cost: £100-200 for a good model (Meaco, EcoAir, ProBreeze). Running cost: 5-10p per hour. Saves £80-150 per year vs. tumble dryer.
14. Stop Phantom Load (Save £50-80/year)
Devices on standby still use power. This is called “phantom load” or “vampire power.”
Table
| Device | Standby Power | Annual Cost |
|---|---|---|
| TV (modern) | 0.5-1W | £5-10 |
| TV (old, or with set-top box) | 5-15W | £15-45 |
| Computer + monitor | 2-5W | £10-25 |
| Games console | 10-15W | £30-45 |
| Printer | 2-5W | £10-25 |
| Microwave (clock) | 2-3W | £10-15 |
| Router/modem | 5-10W | £20-40 |
| Phone charger (plugged in, no phone) | 0.5W | £2-5 |
| Smart speaker | 2-3W | £10-15 |
Total phantom load: £100-200 per year for typical UK home.
The smart plug solution: Use smart plugs (£10-20 each) or extension leads with switches. Turn off entertainment systems, computer setups, and chargers at night. Keep router on (it uses little and is annoying to restart).
The “one switch” rule: Plug related devices into one extension lead with a switch. One flick turns off TV, soundbar, console, and set-top box. Saves £30-60 per year.
Section 4: Cooking and Kitchen — Save £50-100/year
15. Use the Microwave, Air Fryer, or Slow Cooker (Save £30-50/year)
Table
| Appliance | Cost Per Hour | Best For |
|---|---|---|
| Electric oven | 60-80p | Roasting, baking, large meals |
| Gas oven | 20-30p | Same, but cheaper if you have gas |
| Microwave | 15-25p | Reheating, steaming veg, quick cooking |
| Air fryer | 20-30p | Chips, small roasts, faster than oven |
| Slow cooker | 5-10p | Stews, soups, casseroles (all day cooking) |
| Electric hob (ring) | 30-50p | Boiling, frying |
| Induction hob | 20-30p | Fast, efficient, precise |
| Kettle | 40-60p (but only 3-5 min) | Boiling water |
The air fryer rule: An air fryer cooks food 20-30% faster than an oven and uses less energy. For small meals (1-2 people), it is cheaper than heating a full oven. Cost: £50-150. Saving: £30-50 per year.
The kettle rule: Only boil what you need. A full kettle (1.7L) costs 8-10p to boil. Half full costs 4-5p. If you boil full kettles 4 times daily and only use half, you waste £30-40 per year.
16. Batch Cook and Freeze (Save £20-40/year)
Cooking one large meal uses less energy than cooking four small meals.
Table
| Approach | Energy Cost | Time Cost |
|---|---|---|
| Cook 4 separate meals | 4 x oven use = £2.40-3.20 | 4 x prep time |
| Batch cook 4 meals, freeze 3 | 1 x oven use = £0.60-0.80 | 1 x prep time + freezing |
Bonus: Batch cooking reduces food waste. UK households waste £700 per year on food. Saving even 10% of that is £70.
Section 5: Behaviour Changes — Free Savings
17. Close Curtains at Dusk (Save £30-50/year)
Curtains are insulation for windows. Close them at dusk to keep heat in.
Table
| Window Type | Heat Loss Reduction with Curtains |
|---|---|
| Single glazing | 15-20% |
| Double glazing | 10-15% |
| Triple glazing | 5-10% |
Thermal curtains: Lined or thermal curtains work best. Cost: £30-80 per pair. If you need new curtains anyway, choose thermal.
18. Wear Layers Indoors (Save £50-100/year)
Table
| Clothing | Equivalent Temperature Rise |
|---|---|
| T-shirt | Baseline |
| Jumper or fleece | +2°C feel |
| Thermal vest | +1-2°C feel |
| Thick socks and slippers | +1°C feel |
The jumper rule: Wearing a jumper lets you keep the thermostat at 19°C instead of 21°C. Saving: £100-150 per year. Cost: £0 (you already own jumpers).
19. Use Rugs on Hard Floors (Save £30-50/year)
Uninsulated floors lose 10% of heat. Rugs reduce this.
Table
| Floor Type | Heat Loss | Rug Benefit |
|---|---|---|
| Suspended timber (common in older homes) | 15-20% | Significant |
| Solid concrete with insulation | 5-10% | Moderate |
| Underfloor heating | N/A | Not applicable |
Cost: £20-50 for a good rug. Saving: £30-50 per year. Plus comfort.
20. Shut Doors Between Rooms (Save £30-50/year)
Heat moves to cold areas. Shut doors to keep heat where you need it.
Table
| Door Status | Heat Loss to Hallway/Unused Rooms |
|---|---|
| Open | High — heat flows freely |
| Closed | Low — heat stays in heated room |
Simple and free. Just shut doors.
Section 6: Long-Term Investments — Bigger Savings
21. Upgrade to Double or Triple Glazing (Save £100-250/year)
Table
| Glazing Type | Cost (3-bed semi) | Saving/Year | Payback |
|---|---|---|---|
| Single to double | £3,000-5,000 | £100-150 | 20-30 years |
| Old double to new double | £2,000-4,000 | £50-100 | 20-40 years |
| Double to triple | £4,000-6,000 | £50-100 | 40-60 years |
The repair rule: If your double glazing is misted (failed seal), repair costs £100-200 per window vs. £400-600 for replacement. Repair first.
Secondary glazing: Cheaper alternative. Acrylic or glass panel added inside existing window. Cost: £200-400 per window. Saving: £50-100 per year. Good for listed buildings or rented homes.
22. Install Solar Panels (Save £400-600/year)
Table
| System Size | Cost (2026) | Annual Generation | Saving/Year | Payback |
|---|---|---|---|---|
| 3kW | £5,000-6,000 | 2,500 kWh | £300-400 | 12-15 years |
| 4kW | £6,000-7,500 | 3,400 kWh | £400-550 | 12-15 years |
| 5kW | £7,500-9,000 | 4,200 kWh | £500-650 | 12-15 years |
The Smart Export Guarantee (SEG): Sell excess electricity back to the grid. Rates vary: 3-15p per kWh depending on supplier. Octopus Energy currently offers the best SEG rates.
Battery storage: Add a battery (£3,000-6,000) to store excess solar for evening use. Increases savings by 30-50%. Payback: 15-20 years total.
Grants: No current UK grants for solar in most homes. But 0% VAT on installation until 2027. Check if your local council offers additional support.
23. Upgrade Your Boiler (Save £200-400/year)
Table
| Boiler Type | Efficiency | Annual Cost (3-bed home) | Saving vs. Old Boiler |
|---|---|---|---|
| Old non-condensing (G-rated) | 60-70% | £1,400 | Baseline |
| Condensing combi (A-rated) | 90-94% | £1,000 | £400 |
| Heat pump (air source) | 300-400% (efficiency) | £800-1,000 | £400-600 |
The heat pump grant: The Boiler Upgrade Scheme gives £7,500 off air source heat pumps. Cost after grant: £3,000-8,000. Requires well-insulated home. Works best with underfloor heating or large radiators.
When to replace: If your boiler is over 15 years old, replacement saves money. If under 10 years, keep it and focus on insulation and controls.
24. Get a Smart Meter (Free, Saves £50-100/year)
Smart meters show real-time energy use. They are free from your energy supplier.
Table
| Benefit | How It Helps |
|---|---|
| Real-time display | See what uses most energy, change habits |
| Accurate bills | No estimates, pay for what you use |
| Time-of-use tariffs | Cheaper electricity at night (Octopus Agile, etc.) |
| Budgeting | Track daily, weekly, monthly use |
How to get one: Contact your energy supplier. They install free. Takes 1-2 hours.
The “In-Home Display” (IHD): The small screen shows current use in pounds and pence. Place it where you see it (kitchen counter). Check it before and after turning appliances on. Awareness alone saves £50-100 per year.
25. Switch Energy Supplier or Tariff (Save £100-300/year)
Table
| Tariff Type | Best For | Current Best Rates (2026) |
|---|---|---|
| Standard Variable (SVT) | No one — most expensive | 30.11p/kWh electric, 7.51p/kWh gas |
| Fixed rate | Price certainty, budgeting | 25-28p/kWh electric (1-2 year fixes) |
| Octopus Agile/OE | Flexible, can shift use to cheap times | Variable, sometimes 5-15p/kWh |
| Time-of-use | EV owners, battery owners, night owls | Cheap 11 PM-6 AM, expensive 4-7 PM |
Comparison sites: Use Ofgem-accredited sites: Uswitch, Compare the Market, MoneySuperMarket. Check every 6-12 months.
The “fixed vs. variable” rule: In 2026, fixed rates are slightly below the price cap. If you find a fix at 25-28p/kWh, it is probably worth it for 1-2 years of certainty. If fixes are above the cap, stay on variable.
Your Action Plan: This Week, This Month, This Year
Table
| Timeframe | Action | Cost | Saving/Year |
|---|---|---|---|
| Today | Turn thermostat down 1°C | £0 | £100-150 |
| Today | Check and adjust TRVs | £0 | £75-125 |
| This week | Order LED bulbs, replace all | £30-60 | £40-60 |
| This week | Buy draught excluders, fit them | £50-100 | £100-170 |
| This week | Get smart meter if you do not have one | £0 | £50-100 |
| This month | Buy smart plugs, cut phantom load | £30-60 | £50-80 |
| This month | Insulate hot water cylinder and pipes | £25-45 | £50-80 |
| This month | Switch to cheaper energy tariff | £0 | £100-300 |
| This year | Install loft insulation or top up | £150-500 | £150-250 |
| This year | Buy smart thermostat | £120-250 | £100-200 |
| This year | Consider solar panels | £5,000-9,000 | £400-600 |
| This year | Replace old boiler when it fails | £2,000-8,000 | £200-400 |
Total potential saving: £500-1,200 per year for a typical UK home.
Frequently Asked Questions
Will these changes make my home cold?
No. The goal is to heat efficiently, not less. Insulation, draught-proofing, and smart controls keep you warm while using less energy. Most people report being more comfortable after making these changes.
Do smart meters really save money?
They save money through awareness and access to better tariffs. The IHD shows what you are spending in real time. This alone changes behavior. Plus, smart meters unlock time-of-use tariffs that can be much cheaper.
Is it worth getting solar panels in 2026?
If you plan to stay in your home for 10+ years, yes. Payback is 12-15 years. After that, electricity is nearly free. With battery storage, savings are higher. The 0% VAT helps. Consider your roof direction (south-facing best) and shading.
Should I replace my boiler now or wait?
If it is over 15 years old, replace with a modern condensing boiler. If under 10 years, keep it and focus on insulation and controls. If considering a heat pump, check if your home is suitable (insulation, radiator size).
Can I really save £1,000 per year?
Yes, but not from one change. £1,000 comes from combining: lower thermostat (£150), smart controls (£150), insulation (£200), LED bulbs (£50), appliance efficiency (£100), cooking changes (£50), phantom load (£70), and tariff switching (£200). Add solar for more.
What about the Energy Price Cap?
The Ofgem price cap limits what suppliers can charge per unit. It changes every 3 months (January, April, July, October). It does not limit your total bill — use more, pay more. The cap is currently 30.11p/kWh for electricity. Fixed tariffs below this are worth considering.
References
About This Guide
This article was written using Ofgem data, Energy Saving Trust research, and UK building standards. It was last checked in June 2026. For personalized energy advice, contact your energy supplier or the Energy Saving Trust. For insulation grants, check gov.uk or your local council.