Grants and funding for solar panels for fabrication

There is no single "solar grant" for a fabrication business, and any site that tells you otherwise is usually out of date. What there is, and what genuinely moves the numbers, is a stack of tax reliefs and finance routes that between them can cover most or all of a project's cost. This page sets out the real 2026 position for a UK metal-fabrication or engineering firm, corrects the myths that circulate online, and explains how the pieces fit together. The detailed cards for each route are below; the guidance here is how to use them.

Capital allowances are the main event, and the detail matters

For most fabrication companies the biggest single benefit is capital allowances, but the exact treatment is widely misreported, so it is worth being precise. Solar PV is classed by HMRC as special-rate plant and machinery. That has one important consequence: solar does not qualify for 100 percent full expensing, which applies only to main-rate assets, and it does not qualify for the new 40 percent first-year allowance introduced from January 2026, which is also main-rate. Anyone claiming "full expensing on your solar" has it wrong.

What a fabrication company can claim is the Annual Investment Allowance (AIA), which gives 100 percent year-one tax relief on the first £1 million of qualifying spend and does apply to special-rate assets including solar. Since the vast majority of SME fabrication installs cost well under £1 million, the AIA usually writes off the whole system against taxable profit in the first year, worth up to roughly 25 percent of the cost back for a profitable company. Above the £1m cap, the 50 percent first-year allowance for special-rate plant lets you deduct half the excess in year one, with a 6 percent writing-down allowance on the remaining balance thereafter. Both the AIA and the 50 percent first-year allowance were made permanent in 2023. These figures are illustrative and depend on your company's profits and tax position, so confirm the detail with your accountant, and see our fuller guide to capital allowances on fabrication solar.

VAT: reclaimable, not zero-rated

A commercial solar install is charged at the standard 20 percent VAT, and a VAT-registered fabrication business can normally reclaim that as input tax, because the electricity is used for taxable business activity. In practice that makes the VAT effectively net-neutral rather than a real cost. Do not be told a fabrication install gets "0 percent VAT", because the zero rate is a domestic-only relief for energy-saving materials in dwellings and does not apply to a commercial industrial unit.

Business rates exemption and the Smart Export Guarantee

In England, on-site renewable generation and co-located storage, where the power is consumed on site, are exempt from business rates until 31 March 2035, so your array and battery are excluded from the rateable value. Separately, the Smart Export Guarantee (SEG) pays you for any surplus you export. SEG rates are set by the energy supplier, not by the government, and only have to be above zero, so they vary, with typical fixed rates around 12 to 16p per kWh in 2026. For a single-shift fabrication shop, export is a secondary value stream because most of your generation is self-consumed, but it is still worth shopping around for the best tariff.

Freeport and Investment Zone allowances, if you happen to be in one

If your fabrication site physically sits inside a designated Freeport or Investment Zone special tax site, new plant and machinery used primarily there can attract a 100 percent first-year allowance, subject to a five-year use condition. This is geographically gated: it applies only inside a designated special tax site, not to a generic industrial unit, so check whether your address qualifies before relying on it. The claim windows were extended to 30 September 2031 for English Freeport tax sites and 30 September 2034 for Scottish and Welsh Freeports and Investment Zones.

A note on the IETF

The Industrial Energy Transformation Fund is sometimes still listed as a solar grant. It is not currently open: following the 2025 Spending Review the government confirmed no further competition window and no successor fund, so a new applicant cannot apply to it in 2026. We mention it only to save you chasing a route that has closed.

Finance is how most fabrication solar actually gets funded

For many owner-managed fabrication firms the deciding factor is not a grant but how the project is financed, because capital is usually earmarked for production plant. Asset finance spreads the cost over five to seven years and is typically cash-flow positive from month one, since the finance payment is smaller than the electricity bill it replaces, and you own the asset. A Power Purchase Agreement (PPA) needs no capital at all: a funder owns the array and you buy the power at a fixed rate below grid, which is ideal for tenants and for firms on shorter leases who want the saving without the outlay. A cash purchase gives the fastest payback and the full AIA relief. We model all three side by side, and the trade-offs are set out in our financing guide.

How to stack it, and what to avoid

The common route for an owner-occupier is straightforward: buy the system, claim the AIA in year one, reclaim the VAT, take the business-rates exemption, and earn SEG on any export. A tenant more often uses a PPA and skips the capital allowances, since the funder owns the asset. The pitfalls to avoid are the myths this page corrects, assuming full expensing applies, expecting 0 percent VAT, or budgeting around the closed IETF. Get those right and the funding picture for a fabrication install is genuinely strong. Use the cost guide to size the numbers, or request a fixed-price quote and we will map the right combination for your site.