Guides
The big home-energy questions, answered straight and worked out in pounds at the Ofgem price cap for 1 July – 30 September 2026. Each one ends where it should — at a calculator you can put your own house into.
Are heat pumps worth it in the UK? The honest answer
It depends on your radiators, not the brochure. When a heat pump saves money, when it costs more, and how the £7,500 grant changes the sum.
Heat pump vs gas boiler: real running costs compared
The head-to-head, in pounds per year. Same house, same warmth — the number changes entirely with radiator size and your electricity tariff.
How much does it cost to run a hot tub in the UK?
The one garden appliance that rivals your heating bill. Real day and year figures, and why the cover matters more than how often you soak.
How much does it cost to charge an EV at home?
Around 2p a mile on an overnight tariff — or four times that on the standard rate. The honest gap between home, public and petrol.
Is solar worth it in the UK? Payback by region
Yes in most of the country — but payback runs from about 6.5 years in Cornwall to 9 in northern Scotland. What actually moves the number.
Prefer to skip to the numbers?
Every guide leads to a calculator. If you already know the question, go straight to the tool and put your own figures in.
All calculatorsFigures checked 2026-08-30, at the Ofgem cap of 26.11p per kWh electricity and 7.33p gas. How we work these out.