0% VAT on Solar and Batteries Until March 2027: What It Covers and the Deadline That Actually Matters

Since 2022, residential solar PV and home batteries in Great Britain have carried 0% VAT instead of the usual rate — and that relief is currently set to run until 31 March 2027. It's a genuine saving, and it applies to more than just panels. But it's also become a favourite line in sales pitches ("get in before VAT comes back!"), so it's worth understanding exactly what it covers, what it's worth, and which deadline you should actually care about.

What the 0% VAT actually covers

The zero rate applies to the supply-and-install of qualifying energy-saving materials at residential properties in England, Scotland and Wales. In plain terms, it covers:

• Solar PV panels and the associated inverter, mounting and wiring, when installed as a package.
• Home batteries — including standalone retrofit batteries added to a home that already has (or doesn't have) solar.

The key word is install. The 0% rate applies to the combined supply-and-fit job from an installer. Buying panels or a battery on their own to fit yourself doesn't get the same treatment. And this is a Great Britain measure — Northern Ireland has a separate VAT position under the Windsor Framework, so if you're in NI, confirm the current rate locally before assuming zero.

What it's actually worth

The saving is simply the VAT you're not paying on the install. On a typical residential solar system installed at somewhere between £6,500 and £9,500 for around 4kWp, or a battery at roughly £3,500–£5,000 for 5kWh up to £6,500–£9,000 for 10kWh, the zero rate versus the standard rate is a meaningful few hundred to over a thousand pounds off the total.

That's real, and it's already baked into the prices most MCS-certified installers quote today — they aren't adding VAT on top and then removing it as a favour. So when you get a quote, the 0% rate is almost certainly already in the number. Ask the installer to confirm it, but don't expect it as a surprise extra discount.

The deadline that actually matters (and the one that doesn't)

Here's the honest part. The 31 March 2027 date gets used to create urgency: "install now before VAT returns." But think about what that pressure is really worth.

If VAT did revert after that date, the cost would be the VAT on the install — a one-off, on the day of purchase. That's not nothing, but it's small next to the two things that genuinely determine whether solar or a battery pays for you:

• Getting the right size and the right quote. Overspending by paying too high a £/kWp, or fitting a system too big for what you actually self-consume, will cost you far more than the VAT ever would.
• Your tariff. A battery's business case is almost entirely tariff-driven — cheap overnight charging on a smart tariff, or a premium export tariff. Rush the install to "beat VAT" and end up on the wrong tariff, and you've saved pennies to lose pounds.

Rushing a five-figure decision to save a one-off percentage is usually a bad trade. A well-negotiated quote and a well-chosen tariff dwarf the VAT saving over the life of the system.

Where the real numbers come from

The 0% VAT helps everyone equally — it doesn't change whether the underlying investment is right for your roof, your usage and your bill. That case depends on:

• Self-consumption savings, typically in the region of a few hundred pounds a year for a household that uses its own solar well.
• Your Smart Export Guarantee (SEG) rate, which is set by retailers and varies widely across the market — we've seen anything from a low single-figure p/kWh up to the mid-teens. These change with 30 days' notice, so confirm the current rate before relying on it.
• Your import tariff and smart charging, which drive the battery case entirely.

A battery's payback commonly lands somewhere around 7 to 12 years depending on the tariff — and if the numbers only work with 0% VAT, that's a sign the case is marginal to begin with, not a reason to hurry.

We don't sell or fit a single panel, and no installer pays us a penny — even the "free" comparison sites get a referral fee from whoever they send you to. So we've no reason to tell you to rush. If the honest answer is that solar or a battery won't pay for your home, the 0% VAT won't change that — and we'll say so.

Figures in this guide are current at the date of publication and indicative only — SEG/export rates change with 30 days' notice, the Ofgem price cap resets quarterly, and grant terms change. Confirm the current numbers for your situation before you commit. This is general information, not personal financial advice.