It's the question everyone asks first. The honest answer is that for most UK homeowners with a decent roof, yes. But it depends on a few things you can check yourself, no sales gloss needed.
What tips it in your favour?
A roof that faces somewhere between east and west works, though south is best. Little shading helps, and so does a household that uses a fair bit of power in the daytime. Add high electricity prices and 0% VAT until 2027, and the numbers look better than they have in years.
What works against it?
A heavily shaded or north-facing roof makes the case weaker. So does very low electricity use, or plans to move house within a couple of years. None of these rule solar out on their own. But they do stretch out payback, so model your own case instead of trusting a generic headline figure.
What does 2026 actually look like?
Typical payback sits around 8–12 years. A solar-plus-battery system on a time-of-use tariff often lands at the better end of that range. After payback, you get a decade or more of near-free power on a 25-year warranty. The biggest single thing you can do is get a few honest quotes and compare them.
The quick version
- Most UK homes with a usable roof come out ahead.
- Daytime use, a battery and a good tariff help the maths.
- 0% VAT until March 2027 makes 2026 a strong window.