Solar asset finance in Cambridge

Whole-of-market commercial solar finance for businesses across Cambridge and the wider Cambridgeshire area, including Ely, Newmarket, Saffron Walden.

Financing commercial solar for Cambridge’s research-led economy

Cambridge is not a typical UK commercial-energy market. The city is built around a dense life sciences and technology cluster of laboratories, clean rooms, data facilities and pilot-manufacturing lines — the kind of high-baseload, around-the-clock operations that make commercial solar exceptionally well-suited to the local estate. With an average commercial energy spend of roughly £50,000 a year, businesses across Cambridge Science Park, St John’s Innovation Park, Cambridge Research Park, Cambridge Business Park and Babraham Research Campus are carrying electricity bills that a properly sized rooftop array can materially offset.

We are a specialist commercial solar asset finance brokerage. We do not install panels and we are not a generic solar company. What we arrange is the funding — hire purchase, finance lease, operating lease, equipment loans and sale-and-leaseback — that lets a Cambridge business put solar on the roof without paying the full capital cost upfront. That distinction matters in a city where most occupiers are tenants of science-park landlords, where R&D budgets are jealously guarded, and where finance directors want the asset to pay for itself out of the savings it generates rather than out of working capital earmarked for research.

The Cambridgeshire and Peterborough Combined Authority (CPCA) runs business growth grants that can sit alongside privately arranged finance, and Cambridge City Council’s Net Zero Cambridge Action Plan targets a net-zero city by 2030 — one of the more ambitious municipal commitments in the East of England. For a finance director, that policy backdrop turns a “nice to have” into a board-level priority with a near-term deadline.

Why Cambridge businesses finance solar rather than buy outright

The instinct of a well-capitalised firm is to buy the system outright and own it cleanly. For most Cambridge occupiers that is the wrong call, for three practical reasons.

First, capital discipline. A laboratory or scale-up business on the Science Park would generally rather deploy £140,000 into instruments, headcount or a funding runway than sink it into a roof. Asset finance keeps that cash in the business and spreads the system cost over its 20-plus-year operating life.

Second, the maths works in your favour. A commercial array sized to a high-baseload R&D facility typically generates a monthly electricity saving that exceeds a sensibly structured monthly repayment from day one. The asset is, in effect, self-funding: the energy it displaces pays the finance.

Third, tenure and flexibility. Many Cambridge firms lease their premises. The right finance route — and sometimes a landlord conversation — lets a tenant put the system to work without owning the freehold, and our finance calculator lets you model the repayment against your own bill before you commit.

Worked example — a firm on Cambridge Science Park

Consider an illustrative diagnostics company occupying a unit on Cambridge Science Park with a £50,000 annual electricity bill driven by 24/7 cold storage and lab equipment. A 150 kWp rooftop system costs in the region of £140,000 installed.

Financed over seven years on hire purchase, the repayment works out at roughly £1,850 a month. The array is modelled to cut the electricity bill by around £2,300 a month across the year. Because hire purchase means the business owns the asset, the company claims the capital allowances itself and keeps the Smart Export Guarantee income on any surplus it exports. From the first month the saving comfortably covers the repayment, and once the seven-year term ends the business owns a system still generating free electricity for another decade or more.

This is one illustrative scenario, not a quote — your numbers depend on roof area, tariff and usage profile, which is exactly what we model with you. See the broader picture on our cost page.

Which finance routes suit Cambridge firms

There is no single right answer; the route depends on whether owning the asset and its tax allowances matters more to you than keeping it off balance sheet.

• Hire purchase — the most common choice for profitable, established Cambridge businesses. You own the system from the outset, claim the capital allowances, and keep the export income. Spread payments over 3–10 years.
• Finance lease — the lessor holds title and usually claims the allowances, passing the benefit back through lower rentals. Useful where a business cannot immediately use the allowances itself.
• Operating lease — no allowances for you as lessee, but the rentals are fully deductible as an operating cost. Suits firms wanting predictable off-balance-sheet payments and an easy exit.
• Equipment loan — a straightforward asset-backed loan; you own the system and claim the allowances, with the panels effectively securing the borrowing.
• Capital purchase — paying cash. Cleanest ownership and full allowances, but it ties up capital that a research-led business usually has better uses for.
• Sale and leaseback / refinance — already installed a system from reserves? Release that capital back onto the balance sheet while continuing to use the array.

For a scale-up burning through investment to hit milestones, hire purchase or an equipment loan usually wins; for a tightly run cost centre that values predictability, an operating lease can be the better fit.

Capital allowances, ownership and the PPA question

This is where the finance route quietly decides who collects the tax benefit — and it is the single point Cambridge finance directors most often get wrong.

Solar PV is treated as special-rate expenditure for capital allowances. It qualifies for the Annual Investment Allowance (AIA) at 100% on up to £1m of qualifying spend per year, with a 50% first-year allowance on expenditure above that threshold. Both the AIA and the 50% first-year allowance are permanent features of the system. Note that solar does not qualify for 100% full expensing — that is reserved for main-rate plant — so the AIA route is what most commercial installations rely on.

Who actually claims those allowances depends entirely on the structure:

• Hire purchase, equipment loan or cash purchase → the business owns the asset and claims the capital allowances itself.
• Finance lease → the lessor usually claims the allowances and passes the benefit on through reduced rentals.
• Operating lease → no allowances for you, but the rentals are deductible.
• Power Purchase Agreement (PPA) → the third-party funder owns the panels, so the funder claims the allowances and keeps the Smart Export Guarantee income, while you simply buy the electricity.

That last point is the heart of our argument. A PPA looks attractive because there is no upfront cost — but you hand the tax relief and the export revenue to someone else for the life of the contract. Owning the system through asset finance keeps both the capital allowances and the SEG income inside your own business. For a Cambridge company that is itself a heavy electricity user, retaining that value usually outweighs the convenience of a PPA. We set the two side by side honestly on our asset finance vs PPA page, and explain the allowances mechanics in full on our capital allowances guide.

The local net-zero driver

Policy is now part of the business case, not a separate ESG footnote. The Net Zero Cambridge Action Plan commits the city to net zero by 2030, and the city’s largest employers — the university estate, Addenbrooke’s Hospital and the biomedical campus, and the science-park tenants — are all under pressure to evidence Scope 2 reductions to investors, funders and tender panels. On-site generation is the most visible and defensible way to do that.

At the regional level, the CPCA business growth grants can support decarbonisation projects, and for occupiers across Cambridge Science Park and St John’s Innovation Park, demonstrable on-site renewables increasingly feature in landlord sustainability requirements and in the due-diligence questionnaires of life-sciences clients. Grant support rarely funds a whole system, but stacked with the right finance it improves the payback. We keep an eye on what is currently available on our grants and funding page.

The practical sequence we recommend: confirm what grant support applies, then finance the balance through a route that keeps the allowances and export income with the business. That combination is how a Cambridge firm turns a 2030 deadline into an asset that pays for itself.

Talk to us about financing solar in Cambridge

Whether you are a scale-up on Cambridge Science Park, an established manufacturer at Babraham Research Campus, or a serviced office at St John’s Innovation Park, we can structure the finance that gets solar onto your roof without draining the capital your business needs elsewhere. We are independent of any installer, so the advice is about the funding, not the panels. Tell us your roof, your bill and your balance-sheet preference, and we will model the routes that fit — then get you a quote you can take to the board.