Energy prices remain high. Here is what a solar install actually returns today — and what affects your payback period most.
The short answer: yes.
A well-sized solar system in England typically saves £600–£1,100 per year on electricity bills. The exact figure depends on your usage, your roof orientation, and whether you pair it with a battery.
The typical payback period today sits between 5 and 8 years. After that, you are generating free electricity for the life of the system — typically 25 years or more.
What affects your return?
Three things move the numbers most: your current unit rate (most households pay 24p–28p in 2025), how much electricity you use during daylight hours, and whether you add battery storage. A battery lifts self-consumption from around 35% to over 75%.
The Smart Export Guarantee
Any surplus power you export to the grid earns you money via the Smart Export Guarantee (SEG). Rates vary by supplier — typically 5p to 15p per unit. It adds up, but it should not be the primary reason you install.
What about north-facing roofs?
North-facing installs generate around 60–70% of what a south-facing system produces. In many cases they still make financial sense, but the numbers need reviewing carefully. Ask your installer to model your specific roof before committing.
Bottom line
If you own your home and pay a reasonable electricity bill, solar is one of the few home improvements that pays you back. Get a proper survey done before committing, and make sure your installer is MCS accredited.
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