What will it cost to make your home cheaper to run?

Fitted prices for the main home energy upgrades run from about £1,745 for a new gas boiler to £40,000 for a large conservatory.

Prices checked September 2026

1. C New gas boiler £1,745–£3,500 fitted
2. D Double glazing £4,100–£15,000 3-bed house
3. D Solar panels £5,500–£9,000 3–6kW system, fitted
4. E Conservatory £9,000–£40,000 supplied and fitted

Running a business? Small firms are paying 26.2–27.8p/kWh for electricity and 7.6–8.2p for gas. Compare business energy