Industrial Unit Solar Grants & Funding 2026

Funding solar panels for industrial units in 2026

When people ask about grants for solar panels for industrial units, they are usually picturing a single cheque from a government scheme. The reality in 2026 is more useful than that. The strongest support for a smaller industrial unit comes through the tax system rather than a grant, and the biggest unlock of all is not money at all but the lease arrangement that lets a tenant put panels on a building they do not own. This guide walks through the routes that actually apply to a multi-let estate unit or a light-industrial SME building, what each is worth, and how they stack together. The values below are illustrative and depend on your company structure, your site and current legislation.

Capital allowances: the main event

For most industrial units the headline funding route is capital allowances, because solar PV qualifies as plant and machinery for UK businesses. Through the 100% Annual Investment Allowance a company can expense a qualifying system’s full cost in its year of purchase against a £1m cap, and a 50% First Year Allowance then applies to anything spent above that figure. For a limited company that translates to an effective tax saving of up to a quarter of the project value in year one, which is why most smaller industrial-unit installs are fully expensed in the first year rather than depreciated slowly. The exact benefit turns on your tax position, so treat the numbers as illustrative and confirm them with your accountant. The official detail sits in the government capital allowances guidance.

Capital allowances are the reason the funding conversation and the cost conversation cannot really be separated. We work both together on our cost guide, because the after-tax cost of a system is often a fifth lower than the headline price once full allowances are claimed.

Freeport and Investment Zone allowances

A unit that happens to sit inside a designated UK Freeport or Investment Zone may qualify for 100% Enhanced Capital Allowances on new plant and machinery, which gives effective full first-year tax relief on the qualifying capex. The current Freeport sites are Freeport East at Felixstowe and Harwich, Liverpool City Region, Plymouth and South Devon, Teesside, Solent, Thames, Humber, and East Midlands. If your industrial unit is on or near one of these, it is always worth checking eligibility before committing, because the relief can be more generous than standard AIA. You can confirm the current zones through the UK Freeport programme pages, and we run a Freeport check on every applicable enquiry.

The green-lease route: the real unlock for tenants

For a great many industrial units the question is not “what grant can I get” but “can I even install solar on a building I lease”. On a multi-let estate the party who would pay for the panels and the party who pays the electricity bill are frequently not the same, and that split incentive between landlord and tenant is the single biggest reason good projects stall. The solution is a green-lease arrangement.

Tenant-installed solar is now standard practice on UK industrial leases. The lease typically requires landlord consent, and the Building Better Partnership Green Lease Toolkit provides the standard solar addendum that sets out that consent and, critically, the end-of-lease treatment of the system. This is not a grant and it has no headline cash value, but it is the thing that makes a tenant solar project possible at all, so for a leaseholder it is the most important item on this page. We work to the BBP toolkit and engage your landlord directly with the addendum template, which on a multi-let estate often makes or breaks the project. Timescales vary: an institutional landlord might take four to eight weeks to grant consent, while an owner-occupied or family-owned property can be one to four weeks.

Where a PPA replaces capital entirely

A power purchase agreement is the other route around the lease problem. Instead of buying the system, a third-party owner installs and operates the panels on the roof, and the occupier simply pays per kilowatt-hour consumed at a rate below grid retail, with zero capital outlay and the asset off the balance sheet. For a tenant on a shorter lease, where claiming allowances or committing capital is impractical, a PPA shifts the lease risk to the third-party owner and still delivers a lower electricity cost from day one. It is not a grant, but it removes the funding question altogether, which for many smaller occupiers is the point.

The Smart Export Guarantee

The Smart Export Guarantee pays for surplus electricity exported to the grid, currently 4 to 15p per kWh as of 2026, and applies to all MCS-certified installs up to 5 MW. For most industrial units export is a minor line, because daytime self-consumption dominates and the bulk of the generation is used on site. On a single-shift unit that closes at weekends, though, the export credit becomes more meaningful, and it is worth factoring into the model. The scheme detail is published by Ofgem under its environmental and social schemes.

The Industrial Energy Transformation Fund

The Industrial Energy Transformation Fund, operated by DESNZ, offers grants of £100k to £30m at a 30 to 50% intervention rate, but eligibility is tied to your SIC code falling within the fund’s scope. Most pure logistics and general light-industrial activity does not qualify. Food-related units, certain manufacturing processes and cold-chain operations sometimes do. If your unit carries out a food or manufacturing process, it is always worth checking eligibility, because the intervention rate is high enough to change a project’s economics entirely. For a standard storage or workshop unit, though, the IETF is unlikely to apply, and the capital allowances route remains the workhorse.

How the routes stack for a typical unit

As an illustrative composite, take a light-industrial SME on a 45,000 square foot leased unit considering a 250 kW system. The funding picture might combine three things: a green-lease addendum that secures landlord consent and makes the project possible at all; full Annual Investment Allowance relief that returns up to a quarter of the cost as tax saved in year one; and a modest Smart Export Guarantee credit on the surplus exported at weekends. If the unit happened to sit in a Freeport, Enhanced Capital Allowances might replace standard AIA for an even stronger first-year position. These figures are illustrative only and depend on the company’s tax position, the lease, the site and current legislation, which is why we model every enquiry from the actual circumstances rather than a template.

Putting your funding package together

There is rarely a single grant that funds an industrial-unit install. The package that works for a smaller unit is almost always a combination: the lease arrangement that unlocks the project, the capital allowances that cut the real cost, and the export and self-consumption savings that pay it back. The right mix depends on whether you own or lease, your company structure, and where the unit sits. The way to find your combination is to start from your own meter data and lease, not a rule of thumb. Read the full detail on our grants and funding page, see how the after-tax cost works on the cost guide, then request a free feasibility and we will map the routes that apply to your unit. If your building is part of a delivery operation, the funding picture shifts slightly, and our page on last-mile depot solar covers that case.