Solar panels have become one of the more visible beneficiaries of the government’s push toward energy efficiency, and VAT treatment sits at the center of that story. Since 2022, most homeowners installing solar panels in the UK have paid no VAT at all on the supply and installation, a relief that has meaningfully lowered the cost of going solar. This article explains how the zero rate works, who qualifies for it, what it does and does not cover, and where installers most commonly get the VAT treatment wrong.
Key Takeaways
- The installation of solar panels in residential accommodation currently qualifies for a 0% VAT rate, applying across Great Britain since 1 April 2022 and extended to Northern Ireland from 1 May 2023.
- The relief also extends to buildings used solely for a relevant charitable purpose from 1 February 2024.
- It covers both solar photovoltaic and solar thermal panels, along with battery storage and smart diverters, including batteries retrofitted to an existing system or installed as standalone battery storage.
- The relief applies whether the same business supplies and installs the panels, or a customer buys the panels separately and pays a different business purely to install them.
- What falls outside the relief is a materials-only sale with no installation, and genuine DIY installation carried out by the homeowner.
- The 0% rate is scheduled to revert to the reduced rate of 5% from 1 April 2027, so timing matters for anyone weighing up an installation, though this date could still change through future legislation.
How the Zero Rate Came About
Before 2022, the installation of qualifying energy-saving materials, including solar panels, generally fell within the reduced 5% VAT rate, although the scope of the relief had been narrowed from 1 October 2019 following changes to UK VAT law.
At Spring Statement 2022, the government introduced a temporary 0% VAT rate for the installation of qualifying energy-saving materials in residential accommodation in Great Britain, with effect from 1 April 2022. The same treatment was extended to Northern Ireland from 1 May 2023 following the Windsor Framework.
The relief was then widened from 1 February 2024 to include installations in buildings intended for use solely for a relevant charitable purpose. The list of qualifying materials was also expanded to include electrical battery storage and smart diverters, including certain retrofit installations.
The zero rate is temporary. Under current legislation, it applies until 31 March 2027 and is due to revert to the reduced rate of 5% from 1 April 2027, unless the legislation is amended before then. Therefore, the applicable VAT rate should always be checked at the time of installation.
VAT on Solar Panels Rental Property: Which Buildings Qualify
The relief applies to installations in residential accommodation, a defined category that covers houses and blocks of flats, armed forces residential accommodation, children’s homes, homes providing care for the elderly, disabled people, or people who suffer or have suffered from drug or alcohol dependency or mental disorder, hospices, institutions where at least 90% of residents live there as their sole or main home, monasteries, nunneries and similar religious communities, student and pupil accommodation, self-catering holiday accommodation, caravans used as a place of permanent habitation, and houseboats or similar boats designed or adapted for permanent habitation and used as someone’s sole or main residence.
Since 1 February 2024, the relief has also covered buildings intended for use solely for a relevant charitable purpose, meaning use by a charity otherwise than in the course of business, or as a village hall or similar facility providing social or recreational amenities for a local community. Installers working with charitable clients should take reasonable steps to confirm the intended use, such as a letter from the customer, and keep that documentation on file. However, no formal certificate is required for this particular relief.
Hospitals, prisons and similar institutions, and hotels, inns and similar establishments are specifically excluded from the definition of residential accommodation, so installations at those premises remain standard-rated. Purely commercial premises with no residential element also fall outside the scope of the relief.
What Products and Work Are Covered in VAT on Solar Panels
The relief covers solar collectors such as evacuated tube or flat plate systems, together with associated pipework and equipment, including circulation systems, pumps, storage cylinders, control panels, and heat exchangers, as well as photovoltaic panels with their cabling, control panel, and inverter. Battery storage systems qualify too, whether installed as part of a new solar system, retrofitted to an existing one, or as a standalone system that stores electricity from the grid rather than from any microgeneration source. Smart diverters, which automatically route surplus generated electricity to appliances or other systems in the property, are also on the qualifying list.
A common misconception is that the relief only applies where one business supplies and installs the panels under a single contract. That is not the rule. The zero rate can apply to the installation service itself, even where the customer has sourced the solar panels separately, provided the supply being made is the installation of qualifying energy-saving materials within a qualifying building. What does fall outside the relief is the sale of solar panels with no installation service at all, which is always standard-rated, and a genuine DIY installation, where the homeowner buys and fits the equipment themselves, since there is no supply of installation services for the relief to attach to.
Single Supplies and Mixed Supplies: Where Installers Go Wrong
The area that causes the most practical difficulty is not accreditation or paperwork, but how a job is structured when solar installation is carried out alongside other work. HMRC’s approach turns on whether the various elements of a job form a single supply, where one dominant element carries the VAT treatment for the whole job and everything else is merely ancillary to it, or a mixed supply, where distinct elements are taxed separately.
Work that is genuinely necessary to fit the panels, such as minor structural adjustments required solely to complete the installation, is generally treated as ancillary and shares the zero rate. But where solar installation is only one part of a larger project, and the main supply being made is a wider construction or renovation service, the whole job can follow the VAT liability of that main supply rather than the zero rate for energy-saving materials. This is an important practical risk for installers who take on solar work as part of broader building contracts, since it can mean losing the zero rate on the solar element entirely rather than just on the unrelated work. Installers structuring quotes and contracts should think carefully about how a job is priced, described and invoiced. Separate pricing, separate invoices and a clear time gap between different elements of work can support an argument that there are genuinely separate supplies, but none of these on their own are automatically decisive. HMRC looks at the overall commercial and contractual reality of the job, not just how it happens to be invoiced, so these factors should be treated as supporting evidence rather than a guaranteed route to separate treatment.
There is no blanket rule that associated building work automatically inherits the zero rate. Whether an element of work is genuinely ancillary, and therefore shares the VAT treatment of the principal supply, depends on the precise contractual and factual circumstances of each job, and installers should assess each contract on its own facts rather than relying on a general assumption either way.
It is also worth noting, for context, that an older test, which restricted relief when the value of materials exceeded 60% of the total charge, applied only during the earlier reduced-rate period before the current zero rate came into effect and is not a live feature of the rules that apply to installations now.
What Installers Need to Get Right
A frequent point of confusion concerns the Microgeneration Certification Scheme, an independent accreditation scheme that installers can register under to certify the standard of their solar and other small-scale renewable energy installations. Many installers and their clients assume that MCS accreditation is itself a condition of the VAT zero rate. It is not. Nothing in HMRC’s current guidance on energy-saving materials makes accreditation under that or any similar scheme a precondition for applying the zero rate. These are two entirely separate regimes: the VAT treatment of an installation is governed only by the energy-saving materials rules described above. At the same time, MCS accreditation is a condition of other schemes entirely, most notably a client’s eligibility to receive payments under the Smart Export Guarantee, but it is not a condition of the VAT zero rate. Installers should be careful not to mistake a client’s eligibility for one for a condition of the other.
Installers also need to be precise about how a job is structured and invoiced, particularly where solar work sits alongside other building work, and should apply the single-supply and mixed-supply principles set out above rather than assuming a fixed rule either way. Businesses working across a mix of qualifying and non-qualifying buildings, such as a portfolio including both residential flats and commercial units, need to apply the zero rate only to the residential elements and apportion the value of any combined contract accordingly. Installers working across borders, or for clients based outside the UK, should also take care to establish their VAT registration position correctly, since the place of supply and registration obligations for a non-established taxable person can differ from those of a UK-based installer.
Conclusion
The 0% VAT rate has made solar installations meaningfully cheaper for UK homeowners and for a defined range of residential and charitable buildings. Still, the relief depends on the work being structured and understood correctly. Both clients and installers benefit from knowing exactly which buildings qualify and how supplies are treated when solar work sits alongside other jobs, since assumptions about accreditation schemes or how a contract is bundled can easily lead to VAT being charged, or not charged, incorrectly. With the reversion to the 5% reduced rate due from 1 April 2027, the current window is also a relevant consideration for anyone timing a solar installation.
Frequently Asked Questions
Yes, where the property is residential accommodation let to a tenant as their home, the zero rate applies in the same way as it does for an owner-occupied home.
No. The relief is specific to residential accommodation and buildings used solely for a relevant charitable purpose. Installations at ordinary commercial premises remain standard-rated.
Yes, standalone battery storage systems qualify for the zero rate, including where they are retrofitted to an existing solar installation or installed to store electricity from the grid rather than from a solar system.
No. MCS accreditation is not a condition of the VAT zero rate. It is relevant to other schemes, particularly a client’s eligibility for Smart Export Guarantee payments, but it does not itself determine the VAT treatment.
Unless the government extends the relief, the rate will revert to the reduced rate of 5% from 1 April 2027, in line with the treatment that applied before the temporary zero rate was introduced.
