Financing Brewery Solar: Cash, Asset Finance or PPA

The engineering question, how many panels will fit on the brewhouse roof, is usually the easy part. The harder question, the one that decides whether the project happens at all, is how you pay for it. With 1,578 UK breweries trading in January 2026 and closures running at roughly three a week, few operators have a spare £60,000 to £300,000 sitting idle. That is exactly why the funding route matters: chosen well, brewery solar defends your margin from the month it switches on rather than tying up capital you need for stainless, staff and duty.

This guide walks through the three realistic routes, cash purchase, asset finance and a zero-capex power purchase agreement (PPA), and the tax and accounting facts that separate them in 2026. It is written to be compared like-for-like, so you can put a straight question to any installer.

First, be honest about what you are financing

Solar PV only offsets the electrical side of a brewery, and electricity is roughly 30% of your total energy. The other 70% is thermal, the wort boil, the hot liquor tank, steam, and no rooftop array touches that directly. What makes the electrical third worth financing is when you use it: refrigeration and glycol chilling run 24/7 during fermentation and are around 35% of your electrical load, so a brewery self-consumes 75–90% of what its panels generate. That high self-consumption is the whole financial case, because every kilowatt-hour you use on site displaces grid electricity at roughly 25p (the DESNZ Q2 2026 non-domestic average; large half-hourly sites often pay 15–24p), while anything exported earns only a Smart Export Guarantee rate of about 12–16p.

Before you sign anything, get the sizing right, an oversized array that exports cheaply is worse value than a smaller one sized to your baseload. Our sizing guide and savings calculator show how to match kWp to your refrigeration load rather than to your roof area.

Route 1, Cash purchase

Paying outright is the cheapest route over the life of the system because you carry no interest, and it unlocks the fullest tax treatment.

The tax position: AIA, special-rate, and the £1m point

This is where breweries most often get bad advice, so be precise. Solar PV is classed by HMRC as special-rate plant (integral features, guidance CA22335). That classification matters because:

• Solar qualifies for the Annual Investment Allowance (AIA), 100% relief in year one on up to £1 million of qualifying spend per year. A 100kW system at £600–800/kWp, or even a 500kW system at around £550/kWp (roughly £275,000), sits comfortably under that cap, so most single-site brewery installs get the full 100% first-year deduction.
• Solar is specifically excluded from full expensing and from the new 40% main-rate first-year allowance. Those reliefs are for main-rate (general-pool) plant, not special-rate assets. If an installer tells you your panels attract “full expensing” or “40% FYA”, they are wrong, walk that back before it ends up in your board paper.
• Above £1m (only the very largest multi-site or 1MW+ projects), the excess attracts a 50% first-year allowance, with the remaining balance written down at 6% a year in the special-rate pool.

In plain terms: for a typical brewery, the AIA means you deduct the whole cost from taxable profit in year one. At the 25% main corporation-tax rate, a £100,000 array can cut your tax bill by around £25,000, illustrative, not a promise, and always one to confirm with your accountant against your own profit position.

VAT, reclaimable, and never zero

Commercial solar carries 20% VAT. The 0% VAT rate is domestic-only; it does not apply to a brewery. The good news is that if you are VAT-registered, and you will be, that 20% is reclaimable, so the effective cost is the ex-VAT figure. Treat any quote that shows 0% VAT as a red flag that the supplier does not understand commercial work.

Business rates, an England-only exemption

If your brewery is in England, on-site solar and battery storage are exempt from business rates until 31 March 2035. That removes a running cost that used to erode the case. Note the geography: this is an England measure, so a brewery in Cardiff, Glasgow or Belfast cannot rely on it and should check the devolved position locally.

With a cash purchase and typical self-consumption, payback lands in the 4–7 year range, faster for larger regional breweries, longer for nanobreweries. See our cost breakdown and full brewery solar cost guide for where your size band falls.

Route 2, Asset finance

Most breweries do not want to sink six figures of working capital into a roof, and this is where asset finance earns its place. Under hire purchase or a finance lease, a lender funds the installation and you repay monthly over (typically) five to seven years.

Cash-flow positive from month one

The point of asset finance is simple: if your monthly electricity saving is larger than your monthly repayment, the system is cash-flow positive from the first month. You are effectively swapping a rising, uncontrollable grid bill for a fixed, finite repayment, and at the end of the term the savings continue for the 25-year-plus life of the panels with nothing left to pay. In a sector where energy is a top-three cost and import prices are volatile, converting a variable cost into a fixed one is itself a margin-defence move.

Who owns it, and who gets the allowances

Here honesty matters, because the tax treatment follows ownership:

• Hire purchase (HP): you are treated as the owner from the outset, so you can still claim AIA on the full capital cost even though you are paying monthly. This is usually the sweet spot, spread the cash, keep the tax relief.
• Finance/operating lease: the lender owns the asset and claims the allowances; you instead deduct the rental payments against profit. That can still be efficient, but it is a different calculation, so ask which structure you are being offered and model the after-tax cost, not just the headline monthly figure.

Interest is an allowable expense in both cases. The key comparison question for any finance quote is the total cost over the term versus the total saving over the same period.

Route 3, Zero-capex PPA

A power purchase agreement removes the capital cost entirely. A third-party funder installs, owns and maintains the array on your roof, and you simply buy the electricity it generates at an agreed unit rate, usually pitched below your grid import price. There is no upfront spend and no maintenance liability.

Best for tenants and short horizons

A PPA is the right tool when ownership routes do not fit:

• You lease your building and cannot justify a capital asset you might leave behind.
• Your lease has only a few years to run, so payback maths do not stack up for you.
• You want the carbon and cost benefit without touching the balance sheet or your borrowing headroom.

The catches, read these before you sign

Because you do not own the system, you cannot claim AIA or any capital allowances, the funder keeps them. PPAs run long (commonly 15–25 years), the unit rate typically escalates each year (often index-linked), and they require secure long-term roof and lease rights, plus clear end-of-term options (buy out, extend, or removal). Over 20 years a PPA is usually the most expensive route in absolute terms, you are paying for someone else to carry the capital and risk. That can still be the correct decision for a tenant; just go in with eyes open. For tenanted brewpubs and taprooms, our brewpubs and taprooms page covers the lease-length questions in more detail.

How to compare like-for-like

Quotes from different funders are easy to misread. Put every option on the same footing:

1. Total cost over 10 and 25 years, not the monthly or per-unit headline.
2. After-tax cost, factor in the AIA or lease-rental deduction and your VAT reclaim, so you compare net numbers.
3. Whose name is on the asset, that decides who gets the allowances.
4. Escalation and exit, is the PPA rate fixed or index-linked, and what happens at term end?
5. Savings assumptions, insist the installer models your self-consumption and a range of SEG rates (12–16p), not a single optimistic top-of-market figure.

One more point on funding: do not confuse financing with grants. The Industrial Energy Transformation Fund (IETF) is closed with no successor, so ignore anyone presenting it as live money. Genuine support such as Climate Change Agreement relief is a separate track, see our grants and funding page for what actually exists in 2026.

Common questions

Can I claim the Annual Investment Allowance if I buy on hire purchase?

Generally yes. HP treats you as the owner from day one, so you can claim AIA on the full capital cost even while repaying monthly, one reason HP is often more tax-efficient than a lease. Confirm the structure and your profit position with your accountant.

Does solar qualify for full expensing or the 40% first-year allowance?

No. Solar PV is special-rate plant and is excluded from both. It qualifies instead for AIA (100% up to £1m per year), with a 50% first-year allowance on any spend above £1m. Most brewery installs are well under the cap.

Is a PPA cheaper than buying the panels?

Usually not over the full life. A PPA removes upfront cost and risk, which is valuable for tenants or short leases, but you forgo the tax allowances and pay an escalating unit rate for 15–25 years. Compare total 25-year cost, not the day-one figure.

Do I pay VAT on a commercial solar system?

Yes, 20%. The 0% rate is domestic-only and never applies to a brewery. If you are VAT-registered you reclaim it, so budget on the ex-VAT cost.

Your next step

The right route depends on your ownership position, your tax profile and how long you plan to stay in the building. Tell us those three things and we will model cash, HP and PPA side by side on your actual figures. Start with a no-obligation quote, form only, no sales calls, and we will come back with like-for-like numbers you can take to your accountant.

Tax treatment depends on individual circumstances and may change. This guide is general information, not tax advice, confirm the position with your accountant. For the official rules, see HMRC’s Annual Investment Allowance guidance and Ofgem’s Smart Export Guarantee pages.