2026 Update: PSDS & IETF closed. AIA gives 100% year-one relief on solar. 2026 active stack still delivers 40–60% effective subsidy. See 2026 grants →

Scotland — commercial solar funding 2026

Commercial solar grants in Scotland — the devolved schemes that are genuinely open.

Scotland has its own support, but SIETF has closed (its last call closed in March 2025), as has England’s IETF. Business Energy Scotland gateways an interest-free SME loan with cashback. Add the UK-wide stack — the Annual Investment Allowance, SEG and PPAs — and most Scottish businesses can recover a large share of capex.

If you run a Scottish business and you have read that "the solar grants are all gone", that advice is England-shaped. Energy and a meaningful slice of business support are devolved, and the Scottish Government has kept routes open that no longer exist south of the border. This page is the honest scheme-by-scheme picture for Scotland in 2026 — which devolved schemes are genuinely open, which UK-wide incentives stack on top, and the grid-connection reality you need to plan around. Figures here are indicative; devolved scheme parameters move, so confirm current terms before you budget.

Scotland-specific schemes (devolved — not available in England)

SIETF — closed

The Scottish Industrial Energy Transformation Fund supported industrial decarbonisation in Scotland through four calls. The fourth and last closed in March 2025, no new call has been announced, and solar PV was never an eligible technology. England’s IETF also closed (July 2025). If you expect a new Scottish call, check SIETF@gov.scot, but do not plan a solar project around one.

Business Energy Scotland — SME loan + cashback

Business Energy Scotland is a Scottish Government-funded advice service delivered through the Energy Saving Trust. For SMEs it gateways an interest-free loan with a cashback grant element on qualifying energy measures, and solar PV and battery storage both qualify. This is the route most Scottish SMEs should look at first.

  • Free, impartial advice service funded by the Scottish Government
  • Interest-free loan — historically up to around £100,000 (confirm the current ceiling)
  • Cashback element on eligible measures — historically in the 15–30% range (confirm the current percentage)
  • Solar PV and battery storage are eligible measures
  • Delivered via the Energy Saving Trust; SMEs apply through the Business Energy Scotland gateway

Tip: The loan and cashback are reviewed periodically, so the headline numbers above are indicative, not a quote. Book the free advice call first — it confirms current terms and scopes the eligible measure list for your specific site.

Scottish public sector decarbonisation support

Scottish councils, NHS Scotland boards, schools and central government bodies have their own decarbonisation support routes alongside the UK-wide Salix loan scheme. The England-focused PSDS grant closed to new applications, but Scottish public sector bodies are not solely reliant on it.

  • For Scottish public sector estates — councils, NHS boards, schools, central government
  • Routes sit alongside Salix interest-free loans (which are UK-wide)
  • Eligibility and caps vary by body type and programme
  • Often paired with a Heat Decarbonisation Plan where heat measures are in scope

The UK-wide stack — applies in Scotland too

Several of the most valuable mechanisms are reserved (UK-wide), so they apply in Scotland exactly as they do in England. For most Scottish businesses these deliver the largest single saving, with the devolved schemes above layered on top.

Annual Investment Allowance — 25% effective corporation tax relief

Corporation tax is reserved, so the Annual Investment Allowance applies to Scottish incorporated companies in full. For every £1 of qualifying new solar capex, 25p of corporation tax is relieved, claimed on the next CT return with no separate application. The Annual Investment Allowance covers the first £1m of plant per group with the same effect. Battery storage attached to the PV qualifies. Annual Investment Allowance for solar — detailed guide.

VAT on commercial solar

Commercial solar installs are standard-rated for VAT (20%), which VAT-registered businesses normally reclaim. The zero rate that applies to domestic installs does not extend to commercial premises.

Smart Export Guarantee — paid for surplus exports

The Smart Export Guarantee requires larger Ofgem-licensed suppliers to pay you for electricity you export to the grid. It is recurring revenue, not a grant, but the right tariff materially affects project IRR for any Scottish site that exports more than it uses. Smart Export Guarantee — full explainer.

Power Purchase Agreements (PPAs)

A PPA is the most-used commercial solar funding route by capacity. A third party funds, owns and maintains the system, and you buy the electricity at a fixed pence/kWh — typically several pence below grid — over a 15–25 year term, with zero capex. Well suited to Scottish sites with high on-site demand and a long horizon at the premises.

Grid connection — the Scottish DNO reality

Two distribution network operators cover Scotland, and which one you deal with is purely geographic:

  • SP Energy Networks — central and southern Scotland
  • SSEN (Scottish and Southern Electricity Networks) — the north of Scotland

Any commercial export system above the microgeneration threshold needs a G99 connection application to the relevant DNO before it can energise. Connection timescales and any network reinforcement costs vary materially by location and existing headroom — in constrained parts of the north this can be the single longest lead-time item on the project. Engage the DNO early, before you commit to a system size, so the connection offer informs the design rather than the other way round.

Worked example — a Scottish food processor, 400kWp

Consider a Scottish food and drink manufacturer installing a 400kWp rooftop array, indicative capex around £320,000 before incentives:

  • Annual Investment Allowance on £320,000 qualifying capex: approximately £80,000 of corporation tax relieved (25%)
  • SIETF: not available. Its last call closed in March 2025 and no new call has been announced, so no SIETF contribution is included.
  • Smart Export Guarantee: recurring revenue on surplus exported via SP Energy Networks or SSEN
  • Net effect: the tax stack alone recovers a meaningful share of capex. SIETF closed in March 2025, so no SIETF award can be added.

The reserved tax stack does the heavy lifting and needs no application, while the Business Energy Scotland loan is the devolved extra worth chasing.

How to apply for commercial solar funding in Scotland

  1. Get a free funding review to confirm which devolved and UK-wide routes your specific site qualifies for
  2. If you are an SME, book the Business Energy Scotland advice call — it confirms current loan and cashback terms and scopes eligible measures
  3. If you are an energy-intensive industrial site, note SIETF closed in March 2025 with no new call; plan around the AIA and other open routes.
  4. If you are a public sector body, scope the Salix loan route and any Scottish public sector programme that fits your estate
  5. Submit a G99 connection application to SP Energy Networks or SSEN early, so the connection offer informs system sizing
  6. Claim the Annual Investment Allowance on the corporation tax return and check the VAT treatment on the invoice — neither needs a separate application

Related

Scotland commercial solar funding FAQs

What commercial solar grants are available in Scotland in 2026?
Scotland has its own devolved support, but its main industrial grant has closed. The SIETF was the devolved route for energy-intensive industrial sites, but its last call closed in March 2025 and it never funded solar PV. Business Energy Scotland delivers an interest-free SME loan with a cashback element on energy measures including solar and battery. Salix interest-free loans cover the Scottish public sector. On top of that, the UK-wide stack — the Annual Investment Allowance, the Smart Export Guarantee and PPAs — applies in Scotland too. Always confirm current loan ceilings and cashback percentages before you budget, and do not budget for the SIETF.
Is SIETF still open in Scotland? No: its fourth and last call closed in March 2025 and no new call has been announced.
No. All SIETF calls are closed: the fourth and last closed in March 2025 and no new call has been announced. England’s IETF closed in July 2025. The SIETF never funded solar PV, so plan on the AIA, the 50% special-rate first-year allowance, SEG and a PPA.
What is the Business Energy Scotland SME Loan and cashback scheme?
Business Energy Scotland is a Scottish Government-funded advice service delivered through the Energy Saving Trust. Its headline product for SMEs is an interest-free loan — historically up to around £100,000 — paired with a cashback grant element on qualifying energy efficiency and renewables measures, including solar PV and battery storage. The cashback has historically sat in the 15–30% range on eligible costs. Both the loan ceiling and the cashback percentage are reviewed periodically, so treat those figures as indicative and confirm the current terms directly before you model the numbers.
Can Scottish public sector bodies still get solar funding?
Yes. Salix Finance operates UK-wide, so Scottish councils, NHS Scotland boards, schools and central government bodies can access Salix interest-free loans, repaid from the energy savings the project generates. Scotland also runs its own public sector decarbonisation support routes alongside Salix. The PSDS grant (an England-focused programme) closed to new applications, but the Salix loan route and Scottish public sector schemes remain live. Confirm which specific Scottish programme fits your estate, as eligibility and caps vary by body type.
Do UK-wide solar incentives apply in Scotland?
They do. The Annual Investment Allowance — 25p of corporation tax relieved per £1 of qualifying solar capex — applies to Scottish incorporated companies exactly as it does across the UK, because corporation tax is reserved. VAT recovery on commercial solar installs, the Smart Export Guarantee for surplus exports, and Power Purchase Agreements all operate in Scotland. For most Scottish businesses the UK-wide tax stack delivers the largest single saving, with the Business Energy Scotland loan layered on top where eligible; SIETF is closed (its last call closed in March 2025).
Which DNO handles solar grid connections in Scotland?
Two distribution network operators cover Scotland. SP Energy Networks (part of Scottish Power) operates the central and southern Scotland licence area. Scottish and Southern Electricity Networks (SSEN) operates the north of Scotland. Any commercial export system above the microgeneration threshold needs a G99 connection application to the relevant DNO before energising. Connection timescales and any reinforcement costs vary materially by location and existing network headroom, so engage your DNO early — it is often the longest lead-time item on a commercial solar project.
How do I apply for commercial solar funding in Scotland?
Start with a free funding review to confirm which routes your site qualifies for, then sequence the application. Business Energy Scotland is the natural first call for SMEs — it provides free advice and gateways the SME loan and cashback. SIETF is closed: all its calls are closed (the last in March 2025) and no new call has been announced, so there is no window to apply in. Salix applications run through the Salix portal for public sector bodies. The Annual Investment Allowance need no application — they are claimed on the corporation tax return and applied at invoice respectively. Confirm current terms at the point of application, as devolved scheme parameters change.
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Funding by asset class

The allowance depends on the asset, and most pages on this topic get it the wrong way round. Solar PV is special-rate expenditure (HMRC Capital Allowances Manual CA22335), so the 100% year-one route is the Annual Investment Allowance — Full Expensing is a main-rate measure and does not reach it. Battery storage, EV charging and heat pumps are Heat pumps for space or water heating are special-rate: AIA, then the 50% FYA. Standalone batteries are probably main-rate (full expensing for companies), but HMRC has no specific guidance; confirm with your adviser.

Free funding review

Find out which 2026 schemes your site actually qualifies for

What you get
  • 1. A short written funding note naming every scheme your site qualifies for in 2026 — and the ones it does not.
  • 2. Indicative system size and a capex band for your roof.
  • 3. Year-one tax treatment per asset in £ — solar is special-rate expenditure, so the route is the Annual Investment Allowance; heat pumps for building heating are also special-rate integral features, and standalone battery storage is probably main-rate plant (HMRC has no specific guidance, so confirm with your adviser). Most pages get this the wrong way round.
  • 4. Projected SEG export revenue at current rates.
  • 5. Any red-flag eligibility or DNO issues we can see up front.

Covers solar PV, battery storage, EV charging and commercial heat pumps — separately or as one bundled project. If your project is a heat pump or a battery rather than a roof, say so in the message box and the note is written against that asset instead.

What we will not do
  • · We do not pass your details to multiple installers.
  • · We do not run a lead auction, and your phone number is optional.
  • · No marketing lists, no unsolicited calls.
  • · We are an independent funding information service — not an installer.

Five questions. They are the eligibility test itself — scheme eligibility in 2026 turns on sector, tenure, site size and spend, so we cannot shortlist anything without them.

We reply from funding@commercialsolargrants.co.uk. A phone number is not required.

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Commercial solar grants & funding

Every active 2026 route to fund commercial solar — grants, tax allowances and loans — with the eligibility and application detail behind each.

Pillar guideCommercial solar grants & incentivesThe master guide to what is open and closed in 2026.