Do Solar Panels Still Pay Off in 2026?
If you’ve been putting off getting quotes because solar “used to” pay off but you’re not sure it still does, the short answer is: for most UK homes, yes, but the reasons have shifted.
What’s changed for 2026
A few years ago the case for solar rested mostly on the Feed-in Tariff and falling panel prices. Both of those are gone or long since flattened out. What’s driving payback now is the gap between what you pay to import electricity and what it costs to generate your own, and that gap has widened as grid electricity prices have kept climbing faster than installation costs.
The payback numbers still stack up
A typical 4 to 6kW system still pays for itself over its lifetime and cuts the average household’s electricity bill by a meaningful amount each year, largely unchanged from recent years because rising bills and rising install costs have moved roughly in step. See our full solar panel cost and savings breakdown for how that breaks down by system size, or try our energy cost calculator for a figure based on your own home.
The VAT deadline that actually matters
Residential solar currently qualifies for 0% VAT, a relief that’s due to run until 31 March 2027 based on current government policy, after which it’s set to revert to 5%. It’s not the reason to go solar, but if you’re already planning to, there’s no upside in waiting past that date.
Where solar makes less sense
Solar pays off more slowly, or not at all, for homes that are:
- North-facing with no usable roof area on an east, south or west aspect
- Heavily shaded for most of the day by trees or neighbouring buildings
- Only in that property for another year or two, since payback takes years to realise
The honest bottom line
For a south, east or west-facing roof with reasonable sun exposure, solar in 2026 pays off on a similar timeline to previous years, it’s just no longer the standout deal it was under the old Feed-in Tariff. It’s a solid, unspectacular investment rather than a guaranteed windfall. Get matched with vetted installers for quotes based on your own roof.
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Frequently asked questions
Do solar panels still pay off in 2026?
For most homes with a south, east or west-facing roof and reasonable sun exposure, yes. A typical 4 to 6kW system still cuts the average UK household's electricity bill by a meaningful amount each year, similar to previous years, since rising bills and rising install costs have moved roughly in step.
What is the solar VAT deadline in 2027?
Residential solar currently qualifies for 0% VAT, a relief due to run until 31 March 2027, after which it's set to revert to 5%. It's not a reason to go solar on its own, but there's no upside in waiting past that date if you're already planning to.
When does solar not pay off?
Solar pays off more slowly, or not at all, for homes that are north-facing with no usable east, south or west roof area, heavily shaded most of the day, or only owned for another year or two.