Home energyEnergy and green upgrades
Is solar worth it in the UK? An honest 2026 guide
Solar is usually worth it in the UK when you own a reasonably unshaded roof, use a fair amount of electricity during daylight, and plan to stay in the home for years. The 0 percent VAT window to 31 March 2027 and payment for exported electricity improve the case. It is weaker on heavily shaded or very small roofs.
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What it is
Whether solar is "worth it" is not a single answer; it depends on your roof, your electricity habits and how long you plan to stay. This guide lays out the factors that move the decision either way so you can judge it for your own home.
How it works
The financial case rests on three things: how much electricity your panels generate, how much of it you use yourself rather than export, and the price of the grid electricity you avoid buying. Using power during the day, or storing it in a battery, raises self-consumption and improves the return.
Non-financial reasons also matter to many households: lower carbon emissions, more energy independence and some protection against future electricity price rises.
Who it is for
- Worth considering: owners of unshaded south, east or west roofs who use electricity in the daytime or will add a battery, and who expect to stay in the home for several years.
- Think harder: homes with heavy shading, a very small or north-only roof, or where you may move soon. Renters generally cannot install panels without the landlord.
Grants and savings
- 0 percentThe 0 percent VAT relief until 31 March 2027 lowers the upfront cost and improves payback (gov.uk).
- The Smart Export Guarantee pays you for exported electricity, improving the return for homes that cannot use all they generate (Ofgem).
- Adding a battery raises self-consumption, which usually improves the case for homes that are out during the day.
How to choose an installer
- Ask an MCS-certified installer for a system designed around your actual electricity use, not a generic package.
- Request a clear, itemised quote and an estimate of annual generation for your specific roof, so you can judge payback yourself.
- Get three quotes and compare the assumptions behind each, not just the headline price.
Frequently asked questions
Is solar worth it if my roof faces east or west?
Often yes. South-facing roofs generate the most, but east and west roofs still produce useful electricity, and an east-west split can spread generation across the day. A heavily shaded or north-only roof is the weaker case.
Do I need a battery to make solar worth it?
No, but a battery raises the share of your own electricity you use rather than export, which usually improves the financial case, especially if your home is empty during the day. It is an added cost, so weigh it against your usage pattern.
Is it still worth installing solar before the 0% VAT ends?
For a suitable roof, installing before 31 March 2027 locks in the 0 percent VAT saving, after which it is set to revert to 5 percent. That lower upfront cost shortens payback, so the deadline is a genuine reason to act sooner rather than later.
Sources
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Editor, VettedHome
Adam leads VettedHome's editorial coverage of UK home services. He is the founder and managing director of Muswell Rose, the commercial strategy and modern systems business behind a portfolio of UK information sites, and he researches and writes the plain-English guides that help homeowners choose between installers and trades, drawing on the standards set by the relevant bodies for each job, such as Gas Safe Register, NICEIC, MCS, TrustMark and the Property Care Association. He is clear about what to check before any work starts.
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