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See how much you could save
Answer the questions below. Your savings update live as you change anything. Free, no signup, no email.
Your home details
The first part is enough (for example SW19 or LS1).
Skip if you do not know. We will work it out from your home details.
Poor: solid walls, draughty. Average: cavity walls, loft insulated. Good: an EPC rating of C or better, or a recent retrofit.
What are you weighing up?
Switch any combination on. The numbers update straight away.
Solar panels normally last 25 years, heat pumps about 15.
Your results
Your numbers
What you could save over 15 years
Total saved
£45,899
Cost to install(after grants)
£19,050
Years to break even
6.6 years
CO2 saved per year
4.3 tonnes
Each upgrade, one by one
- Battery savings assume you are on Intelligent Octopus Go or an equivalent time-of-use tariff.
- Heat pump savings are marginal for your home at current prices. Insulation upgrades first may be the better move.
- Assumes the £7,500 Boiler Upgrade Scheme grant has been applied for and approved. Check eligibility on gov.uk.
- EV running-cost savings assume smart overnight charging on a tariff like Intelligent Octopus Go.
- Does not include EV purchase price, depreciation, VED, or insurance differences.
Red is the period before you break even. Green is profit. Numbers assume electricity prices rise 3 per cent a year and panels lose 0.5 per cent of their power each year.
Most UK homes save £200 to £400 a year by switching to a smart energy tariff. Octopus Energy's Intelligent Go tariff gives you 6 hours of cheap overnight electricity for the whole home, not just your car.
Switch through the link below and Octopus credits your account £50 if you sign up as a household, or £75 if you sign up as a business.
Switch to Octopus (£50 credit)