How to Reduce Energy Bills UK — Money-Saving Tips That Work
Practical ways to cut your gas and electricity bills without sacrificing comfort. Quick wins, bigger investments, and how much you could save.
·3 min read
Energy bills are a significant household expense, but there are many practical ways to reduce them. Some changes are free; others require investment but pay back over time.
Quick Wins (Free or Low Cost)
Heating and Hot Water
Action
Annual Saving
Cost
Turn thermostat down 1°C
£100–£145
Free
Reduce heating by 2 hours daily
£115–£165
Free
Shower 1 minute less each day
£80–£100
Free
Use shower instead of bath
£15–£20 per swap
Free
Bleed radiators
Variable
Free
Only boil water you need
£15–£20
Free
Wash clothes at 30°C
£15–£25
Free
Fill washing machine/dishwasher fully
£15–£25
Free
Air dry clothes instead of tumble dryer
£70–£100
Free
Lighting and Appliances
Action
Annual Saving
Cost
Switch to LED bulbs
£40–£90
£2–£10 per bulb
Turn lights off when leaving room
£25–£40
Free
Turn appliances off at plug (not standby)
£65
Free
Use a smart plug for standby
£30–£50
£10–£25 per plug
Run dishwasher/washing machine overnight (if applicable)
Varies
Free
Cooking
Action
Annual Saving
Cost
Use microwave instead of oven
£35–£50
Free
Use slow cooker for stews
£15–£30
£20–£50 (if buying)
Use air fryer instead of oven
£30–£50
£50–£150 (if buying)
Use lids on pans
£10–£15
Free
Batch cook
Variable
Free
Medium Investments (Payback 1–5 years)
Action
Annual Saving
Cost
Payback
Smart thermostat
£75–£150
£150–£250
1–3 years
Draught proofing
£125
£50–£200
6–18 months
Hot water tank jacket
£45–£70
£15–£25
3–6 months
Radiator reflector panels
£25–£50
£20–£50
1–2 years
Loft insulation top-up
£60–£100
£150–£400
2–5 years
Thermostatic radiator valves
£50–£100
£100–£200
1–3 years
Smart plugs
£30–£50
£30–£60 (set)
~1 year
Bigger Investments (Payback 5+ years)
Action
Annual Saving
Cost
Payback
Cavity wall insulation
£200–£395
£1,000–£2,000
3–8 years
Solid wall insulation (internal)
£200–£400
£8,000–£14,000
20–35+ years
Solid wall insulation (external)
£200–£400
£12,000–£22,000
30–55+ years
Double/triple glazing
£100–£200
£5,000–£15,000
25–100+ years
Solar panels
£200–£500
£5,000–£12,000
10–25 years
Heat pump
Variable
£10,000–£18,000
10–20+ years
New condensing boiler
£150–£350
£2,000–£4,000
8–15 years
Room-by-Room Tips
Living Room
Action
Why
Close curtains at dusk
Trap heat
Use throws/blankets
Personal warmth without heating
Turn off TV when not watching
Standby costs add up
Block draughts from fireplace
Major heat loss
Kitchen
Action
Why
Defrost freezer regularly
Runs more efficiently
Don’t overfill fridge
Better air circulation
Keep oven door clean
See food without opening
Use the right size pan on the right ring
Efficiency
Bathroom
Action
Why
Fix dripping taps
Hot water waste
Install low-flow showerhead
Uses 30–50% less water
Don’t run taps unnecessarily
Hot water costs
Insulate hot water pipes
Keeps water hotter for longer
Bedroom
Action
Why
Keep bedroom cooler
Better sleep, lower heating cost
Use thicker duvet in winter
Instead of heating
Keep doors closed
Keeps heat where you need it
Understanding Your Usage
Usage
Average
Efficient
High Use
Electricity (kWh/year)
2,700
1,800
4,100+
Gas (kWh/year)
11,500
8,000
17,000+
What Uses Most Energy
Component
% of Typical Bill
Space heating
~55%
Hot water
~20%
Appliances
~15%
Lighting
~5%
Cooking
~5%
Focus on heating first — it is more than half your bill.