How to Reduce Energy Bills: Complete Money-Saving Guide
Quick Wins (Free or Low Cost)
Switch tariff: Check if you're on the cheapest available tariff. Switching supplier can save £200-400 per year. Turn down your thermostat by 1°C to save around £80 per year. Use LED bulbs throughout your home — they use 90% less energy than incandescent bulbs. Draught-proof doors and windows with foam strips (£20-50, saves £60+ per year). Only boil what you need in the kettle.
Medium Investment (£100-1,000)
Smart thermostat (£150-250): Typical savings of £100-150 per year through better scheduling and zone control. Loft insulation top-up (£300-400): If your loft insulation is less than 270mm, topping it up can save £150+ annually. Hot water cylinder jacket (£15-25): Saves £35-50 per year if your tank is uninsulated. Smart plugs and TRVs: Control heating room by room and eliminate standby power waste.
Bigger Investments (£1,000+)
Cavity wall insulation (£500-1,500): Saves £200-400 per year. Solar panels (£6,000-8,000): Save £500-1,000 per year. Heat pump (£8,000-15,000 with grants): Can halve heating costs long-term. Double/triple glazing (£3,000-7,000): Saves £100-200 per year.
Government Support
The Energy Company Obligation (ECO4) scheme provides free insulation and heating upgrades for eligible households. The Boiler Upgrade Scheme offers £7,500 towards heat pumps. Check your eligibility through the Simple Energy Advice service.
Monitor Your Usage
Get a smart meter installed (free from your supplier) to track usage in real time. Most households find they naturally reduce consumption by 5-10% simply by being able to see what they are using.
Related Calculators
Frequently Asked Questions
What is the easiest way to reduce energy bills?
Switching to a cheaper tariff (saving £200-400/year), turning your thermostat down 1°C (saving £80/year), and draught-proofing (saving £60/year) are the easiest wins with zero or minimal cost.
How much can insulation save on energy bills?
Loft insulation saves £150+ per year, cavity wall insulation saves £200-400, and solid wall insulation saves £300-500. These are one-time investments that keep paying back for decades.