Solar panels for breweries, FAQs

A typical brewery solar installation ranges from around £6,000 for a nano or small-batch brewery to over £500,000 for a large regional brewery with distribution-centre roofs. Cost per kWp is usually £800 to £1,100 for small systems, falling to roughly £550 to £700 above 250 kWp. Most installs are written off in year one under the Annual Investment Allowance, and paybacks typically land between four and seven years thanks to the high self-consumption a brewery's continuous refrigeration load delivers.

Partly, and it is important to be honest about which part. Roughly 70% of a brewery's energy is thermal process heat, the wort boil, hot liquor and steam, which solar PV cannot offset directly. The other ~30% is electricity, and that is where solar excels: refrigeration and glycol chilling alone are about 35% of your electricity and run 24/7 during fermentation, so demand sits under the solar curve and you self-consume 75 to 90% of what the array makes. We size the array to your electrical load, and where it pays we look at diverting surplus solar into your hot liquor tank or a heat pump to start reducing the thermal load too. What we never claim is that panels will eliminate your whole energy bill.

System size should match your daytime electrical load, not your roof area or your total energy use. We pull 12 months of half-hourly meter data and size the array to cover roughly 70 to 90% of daytime electrical consumption, anchored on the refrigeration, cold-store, compressed-air and pump loads that run all day. As a guide, that is typically 6 to 30 kWp for a nanobrewery, 30 to 150 kWp for a craft microbrewery, and 250 to 750 kWp for a regional brewery. You can also estimate from production: a typically-run brewery uses about 8 to 16 kWh of electricity per hectolitre, with craft and nano sites running higher.

Because a brewery's electrical demand is daytime-weighted and largely continuous. Refrigeration and glycol chilling, the single biggest electrical load, run around the clock through fermentation, and packaging lines, compressed air and pumps run through the daytime shift, so demand lands almost exactly under the solar generation curve. That means 75 to 90% of everything the array generates is used on site at your full 22 to 30p import rate rather than exported cheaply at 12 to 16p. High self-consumption is what drives short paybacks, and a brewery has it built in.

The main relief is capital allowances: the Annual Investment Allowance gives 100% year-one tax relief on the first £1m of qualifying spend, which covers most brewery installs, worth up to about 25% of the cost for a profitable company. On-site solar and battery are also exempt from business rates in England to 2035, and the Smart Export Guarantee pays for exported power. Breweries in the sector Climate Change Agreement get a large discount on the Climate Change Levy (92% on electricity, 89% on gas from April 2026), and self-generated on-site solar is not liable for CCL at all. Note that solar is special-rate plant, so it does not qualify for full expensing, and the Industrial Energy Transformation Fund is now closed. We map the right combination and point you to current HMRC guidance rather than fixed figures.

No. The 0% VAT rate on solar applies to domestic installations only. A commercial brewery installation is standard-rated at 20% VAT. The important point is that a VAT-registered brewery, which is nearly all of them, reclaims that 20% in full on its VAT return, so it is a cash-flow item rather than a real cost. Any installer telling you a brewery gets 0% VAT is applying the domestic rule incorrectly.

The brewing sector has a Climate Change Agreement, run through the British Beer & Pub Association, that gives participating breweries a large discount on the Climate Change Levy, from April 2026, 92% off the levy on electricity and 89% on gas. On-site solar helps in two ways: electricity you generate and use on site is not liable for the levy at all, and self-generated renewable power improves the energy-per-hectolitre figure your CCA target is measured against. Larger regional and national breweries qualify comfortably; many small craft breweries may not individually meet the energy-intensity threshold, so it is worth checking your eligibility with the BBPA, we will not assume you are in the scheme.

Yes. Rooftop installs happen above and around your production, and fermentation cooling keeps running throughout. The only mandatory outage is the final grid connection, usually four to eight hours, which we schedule for a weekend, a quiet period or a planned CIP window. We coordinate around your brew days, cold store, CO2 areas and packaging runs, and we run a food-safety contamination plan so nothing enters open vessels or lines during the works.

Usually not, but breweries have more exceptions than a standard warehouse. Rooftop PV on a non-domestic brewery is normally Permitted Development under Class J of Part 14 of the GPDO 2015 (the 1 MW cap was removed in December 2023), subject to a prior-approval application and the projection limits, 200 mm above a pitched roof, or within 1 metre of the height and edge of a flat roof. But Permitted Development is removed for listed buildings and restricted in conservation areas, which catches many historic tower breweries, maltings and town-centre brewpubs, so those need Listed Building Consent. We confirm your planning position as part of the feasibility study.

Because a brewery runs heavy three-phase loads, almost every commercial array needs a G99 application to your Distribution Network Operator and a connection offer before installation. The DNO has 45 working days to respond for schemes up to 1 MW, though allow 8 to 12 weeks in practice, and larger arrays needing a network study take longer. Where grid capacity or export is constrained, a G100 export-limitation scheme lets you run a large array for self-consumption while capping what you export, which suits breweries because they use most of their generation on site anyway. We submit the DNO application early, alongside the structural survey, so the connection clock starts on day one.

Not always, solar alone already self-consumes well at a brewery because the refrigeration load runs continuously. A battery earns its keep where your overnight fermentation and cold-store cooling can run on stored midday solar, where you face heavy half-hourly DUoS red-band or capacity (kVA) charges, or for a brewpub whose load extends into the evening. Commercial battery paybacks are longer and more site-specific than the panels (often 4 to 10 years), so we model the battery business case separately and only recommend it where it genuinely pays for your site.

Not directly with panels, but there are two routes we model where they pay. First, surplus midday solar can be diverted through a resistive immersion element into your hot liquor tank, storing it as hot water for mashing or CIP, a simple 'solar thermal battery' that uses generation you would otherwise export cheaply. Second, and more powerfully, an industrial heat pump can electrify low- and medium-grade process heat: hot-water duties run at a coefficient of performance around 2.5 to 3.5, and vapour-recompression heat pumps have recovered brewery waste heat to make process steam at much higher efficiency. Pairing PV with a heat pump is how a brewery begins to attack the thermal 70% that solar alone cannot reach.

Self-consumed solar replaces grid electricity at your full import rate, currently around 22 to 30p/kWh for commercial users depending on your size and contract, while any surplus earns roughly 12 to 16p/kWh under the Smart Export Guarantee. For a 250 kWp brewery array, expect £40,000 to £55,000 of annual bill reduction plus modest export income, with 75 to 90% of generation used on site. Your bill also becomes more predictable, because a growing share of your electricity is generated at a fixed lifetime cost rather than exposed to wholesale spikes, which is the whole point in a sector this cost-squeezed.

There are three a generalist installer often misses, and we design around all of them. First, DSEAR: your CO2 recovery plant and malt-dust handling create hazardous areas, so DC cabling, isolators and inverters must respect the site's hazardous-area classification. Second, food safety: as a registered food business your roof works over open production need a contamination plan. Third, the refrigeration plant brings F-gas obligations. On top of that we handle the structural sign-off, the pre-2000 asbestos survey, and RC62 fire-safe design that your insurer increasingly expects. These are exactly the details that make brewery solar a specialist job.

Many, across every scale, and we can point you to public examples for reassurance rather than as our own client work. Stewart Brewing in Edinburgh invested about £180,000 in a 210 kW array generating around 165,000 kWh a year, meeting 65 to 70% of its electricity. St Austell in Cornwall has hundreds of panels across its sites and targets 50% renewables by 2030. Moorhouse's in Burnley runs a 50 kWp array, and a cluster of Bristol craft breweries (Left Handed Giant, Moor Beer, Wiper & True) fitted a combined 120 kW. Adnams in Southwold pairs solar PV with solar thermal. The pattern is clear: breweries from Cornwall to Edinburgh are already doing this to defend margin and back up a genuine sustainability claim.

From contract to commissioning, expect three to six months for most breweries, with the G99 grid connection usually the longest single item. Physical installation is typically one to three weeks on site, worked around your production. Panels are warranted for 25 years (typically about 84% output at year 25), inverters for 5 to 12 years and replaced once during the system life. Maintenance is light, an annual operations-and-maintenance visit for electrical inspection and cleaning, plus remote monitoring, typically £8 to £12 per kWp a year, and insurers increasingly expect RC62-compliant design and annual inspection as a condition of cover.