Distribution centre solar grants: what exists and what has closed

There is no single headline grant that pays for solar on a distribution centre, and you should be wary of anyone who tells you otherwise. What there is instead is a stack of tax reliefs, finance structures, and in some cases targeted funding that, combined correctly, can shoulder a large share of the cost. The biggest lever for most logistics operators is not a grant at all but the way solar PV is treated for tax. Below, each route is set out with who it suits and how they fit together.

Capital allowances at distribution-centre scale

At distribution-centre scale the detail of capital allowances matters. Solar PV is plant and machinery, and it is normally treated as special-rate plant. The Annual Investment Allowance (AIA) lets a company deduct 100% of qualifying spend up to £1m a year against profit, a limit shared with its other plant spend and with associated companies. Spend above the limit attracts a 50% first-year allowance, and the rest is written down at the special rate. Full expensing, the 100% first-year allowance for main-rate plant, does not cover special-rate assets such as solar. The government guidance on capital allowances and the Annual Investment Allowance sets out the current rules and limits.

A worked example: a £1.5m scheme gets £1m under the AIA plus a 50% first-year allowance on the other £500,000, so £1.25m is deducted in year one and £250,000 goes into the special-rate pool. At the 25% main rate of corporation tax the year-one deduction is worth about £312,500, if the company has the profit and has not used the AIA elsewhere. It is an illustration, not tax advice.

Freeport and Investment Zone tax sites

A designated Freeport or Investment Zone tax site can carry a 100% first-year allowance for companies on new, unused plant and machinery used primarily in the site. HMRC's manual sets the end date for qualifying spend at 30 September 2031 for English Freeport tax sites and 30 September 2034 for Scottish and Welsh Freeport sites and for Investment Zone sites. The relief is for plant, not buildings, and only the designated tax-site boundary counts, so a distribution centre in a Freeport city is not automatically inside the site. Check the site against the official designation (HMRC capital allowances manual, CA23122) before it goes in a business case.

Funds that have closed

The Industrial Energy Transformation Fund closed in July 2025 and no successor fund is planned; its last application window shut on 19 April 2024. Solar PV was never an eligible technology, so a distribution-centre roof should not be costed against it. The gov.uk IETF collection records the closed scheme.

Smart Export Guarantee

Under the Smart Export Guarantee (SEG), suppliers in the scheme pay for electricity exported to the grid from small-scale low-carbon generation up to 5 MW. Each supplier sets its own tariff, which must be above zero, so rates differ and change: quote a rate only with the supplier's name and the date. Accreditation and metering requirements depend on the size of the installation, so check the supplier's terms and Ofgem's SEG guidance rather than assuming a certification route. For a 24-hour distribution centre that uses most of what it generates, export is small and SEG income is a minor contributor; a single-shift site that exports at midday should put a named tariff in the financial model.

Green leases: unlocking solar on a building you do not own

The biggest barrier to distribution-centre solar is rarely money, it is the lease. A tenant cannot fit solar to a roof it does not own without the landlord's consent, and the consent terms, the treatment of the asset during the term and what happens at lease end all need agreeing. The Better Buildings Partnership publishes a Green Lease Toolkit that sets out clauses for these points. It is not funding, but it gives landlord and tenant a common starting text. Landlords differ in their own policies and timescales, so ask the landlord's asset manager early and run consent in parallel with the design.

Regional and combined-authority support

Several mayoral and combined authorities run business decarbonisation grants and advisory programmes that distribution operators can tap, depending on location. Programmes run by the West Midlands, West Yorkshire, Liverpool City Region and South Yorkshire combined authorities and their energy hubs have offered SME support that varies in scope and timing. These rarely cover the bulk of a large project, but they can fund feasibility, advisory, or a slice of capital, and they stack with the AIA. Check each authority's own site for what is open: programmes change and some close.

How the routes stack

For an owner-occupied distribution centre, the usual combination is a cash or asset-finance purchase claiming the Annual Investment Allowance and any first-year allowance above it, plus a named SEG tariff on any export. For tenants the route is usually a power purchase agreement, which takes the capex off the tenant's books, combined with a green-lease addendum to secure landlord consent. The key rule is that grants and tax reliefs interact: a grant can reduce the cost on which you claim allowances, so the order and structure matter. Model the full stack with your accountant so you capture what applies without falling foul of the rules. For the owner-or-tenant view, see how to fund distribution centre solar: buy, lease or PPA.

Common pitfalls and how to avoid them

The most common mistakes are simple to avoid. Operators assume a project above £1m is written off in one year, when the Annual Investment Allowance limit is shared and the excess attracts a 50% first-year allowance. Tenants stall for months because the lease consent was left until after the design was finished rather than started in parallel. Some budget for a grant that has since closed. And some claim a grant without modelling its effect on their capital allowances, leaving money on the table overall. Engaging early, and treating the funding stack as one connected decision rather than a series of separate ones, fixes most of these.

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