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This may be an obvious question for many homeowners. If there are solar panels installed at your house and you receive some payment for the electricity that you generate, then there is a high probability that you will not be paying taxes on that income.
“High probability” does not mean “guaranteed” since many people in the UK got warnings from HMRC in late 2025.
Two Ways Solar Gives You Money Back, But You Can Only Tax One
It is useful to distinguish the two ways in which solar makes money for you, since the two are very different when it comes to taxation.
One way is through the power that you are not purchasing. You get free electricity through your solar panels, meaning that you don’t need to buy any electricity from the supplier. This is an expense reduction, not income.
Second is the excess electricity that you sell to the national power grid. When the generation exceeds your consumption needs, the extra electricity goes to the national power grid and the utility company purchases it from you through the Smart Export Guarantee (SEG) program. This is the only component of solar that may be deemed to be taxable income in theory.
Domestic Microgeneration Exemption
HMRC has long treated small home renewable systems gently. There is a specific exemption for domestic microgeneration that covers income from generating electricity mainly for your own use. It was written for exactly this situation: a household that puts panels on the roof to cut its own bills and sells off the occasional surplus.
The condition that matters is intent and scale. The system has to be installed primarily to supply your own home, and it shouldn’t be generating far more than you consume. A standard rooftop system on the house you live in fits comfortably inside that. It is also why owners on the older Feed-in Tariff (FiT), which closed to new applicants in 2019, generally pay no tax on those payments either.
Where Does The £1,000 Allowance Fit In?
The £1,000 trading and miscellaneous income allowance is sometimes mentioned when discussing solar payments, but it is important not to confuse it with the domestic microgeneration exemption.
Where income qualifies for the domestic microgeneration exemption, the £1,000 allowance is not the reason that the solar income is exempt. If the exemption does not apply and the income falls within the relevant trading or miscellaneous income rules, the £1,000 allowance may be relevant instead.
The allowance is not a separate £1,000 tax-free limit reserved for solar income. Other qualifying trading or miscellaneous income can affect how the allowance applies. Where receipts exceed £1,000, that does not automatically mean the entire amount becomes taxable; the taxpayer may be able to use the allowance or deduct allowable expenses when calculating taxable profit, depending on the circumstances.
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When Could Solar Income Be Taxable?
Tax may become relevant where an installation falls outside HMRC’s domestic microgeneration exemption or where the electricity is generated as part of a business or other income-producing activity.
A larger installation designed primarily to generate commercial income may be treated differently from a domestic system intended to meet a household’s own electricity needs. The same applies where solar generation forms part of a trade or business.
Landlords also need to consider their individual arrangements rather than assume that the rules applying to an owner-occupied home will automatically apply to a rental property. The ownership of the system, the use of the electricity and the nature of any payments can affect the tax treatment.
Whether income must be reported through Self Assessment depends on the circumstances. Crossing £1,000 in qualifying receipts is not, by itself, a rule that makes every pound of income immediately taxable or means that every solar owner must file a tax return.
The £100 Late Filing Penalty
Owning solar panels does not create a £100 HMRC penalty. The £100 figure relates to the late submission of a Self Assessment tax return where a person is required to file one.
The issue is therefore not whether someone owns a solar PV system, but whether their overall circumstances create a requirement to complete a tax return. If a return is required and it is submitted after the deadline, HMRC can issue an initial late filing penalty.
It is also important not to treat £1,000 as a universal solar tax threshold. The domestic microgeneration exemption, the trading and miscellaneous income allowance and the wider Self Assessment rules are separate matters.
What About VAT?
VAT is separate from income tax. Qualifying residential solar and battery installations can benefit from 0% VAT under current rules. For a detailed explanation of rates, eligibility, and the 2027 change, see our guide to VAT on solar panels and batteries in the UK.
A Quick Note On Businesses and Landlords
Solar installations used for business purposes can have a different tax treatment from domestic systems. Capital allowances may be available for qualifying expenditure, but the relief available depends on the business, the nature of the expenditure and how the installation is used. It is therefore safer not to assume that every business can deduct the full cost of a solar installation in the first year.
Income received from electricity generation may also form part of the business’s taxable receipts. The treatment should be considered alongside the wider tax position of the business.
Landlords should take similar care. The tax treatment can depend on how the system is owned, whether the electricity is used by tenants, and the nature of the payments received. A rental property should not automatically be treated in the same way as a homeowner’s own residence.
Tax rules and individual circumstances can change. This article provides general information rather than personal tax advice. For a large installation, a business, multiple properties or a rental arrangement, checking the position with HMRC or a qualified tax adviser is sensible.
FAQs
Simply owning solar panels does not mean you need to contact HMRC. Qualifying domestic microgeneration income may be exempt from Income Tax, although other income or circumstances can affect your reporting obligations.
For qualifying domestic microgeneration, Feed-In Tariff payments can be covered by HMRC’s Income Tax exemption. The Feed-In Tariff closed to new applications in 2019, but existing participants can still receive payments.
No. Money saved by using your own solar-generated electricity is a reduction in your household energy costs, not income.
No. Installing a battery does not by itself create an Income Tax charge. It can simply allow you to use more of your solar electricity instead of exporting it.
Not necessarily in every case. The tax treatment depends on how the solar system is owned, how electricity is supplied and the nature of the payments received.
