How much do solar panels for pubs cost?

The honest answer to what solar panels cost for a pub is that it depends on the size of the system, and the size depends on how much electricity the pub actually uses during daylight hours. A small wet-led local with a single cellar and basic lighting needs a very different array from a busy roadside dining pub running a full kitchen, walk-in refrigeration and air conditioning. As a planning range, a pub system of 10 to 100 kW is often priced between about £10,000 and £90,000 installed. That range is an indicative assumption rather than a published price index, so treat it as a starting point and get written quotes. Most independent pubs land in the lower-to-middle part of that band, with larger food-led houses and small estates pushing toward the top.

As a rough rule, cost per kW falls as the system grows. On the same indicative assumptions, a small pub array under about 30 kW works out at £900 to £1,200 per kW, while a mid-sized system of 30 to 100 kW comes down to around £800 to £1,000 per kW because the fixed costs of scaffolding, mobilisation and design are spread across more panels. That is why a system is best sized from real demand rather than from the roof: a slightly larger system that is self-consumed is almost always better value per pound than a smaller one sized only to fit the available space.

What the price actually includes

A full pub solar quote should cover the whole job, not just the panels. That means tier-1 modules, the inverters, the mounting system suited to the roof type, all the cabling and isolation, the electrical works to tie into the supply, scaffolding and access, commissioning, monitoring, and the certification needed for the Smart Export Guarantee. It should also include the design work behind it: the structural assessment, the yield model, and the half-hourly load analysis that shows how much of the generation will be used on site. A sound quote states the real number once rather than hooking the buyer with a low figure and adding extras later.

The costs people forget

A few items can move the price and are worth knowing about up front. The grid connection is the main one. Any system above 16 A per phase (3.68 kW on a single phase) needs a G99 application to the local network operator, and on a constrained network the connection itself can be the longest part of the project, so the application is best submitted early. Older pubs sometimes have a constrained single-phase supply that caps system size unless the supply is upgraded, which is a cost to flag before committing. The roof matters too: a structural survey is standard, and asbestos-cement roofs, common on older pub outbuildings, cannot be retrofitted and need replacing first. Where a re-roof is needed, the solar business case often helps pay for it, and it is better to establish that up front than to have it sprung on you mid-job.

How payback is worked out

Payback on a pub system is driven by self-consumption, how much of the power you use yourself instead of exporting. Because a pub's cellar, kitchen and lighting loads run through daylight hours, self-consumption tends to be high, and that is what makes the numbers work. Payback is best looked at three ways to see the full picture. Simple payback is the headline: total cost divided by annual saving, which on the assumptions used on this site can land somewhere around six to seven years, though yours depends on how much you use on site. The internal rate of return over the 25-year panel life and the net present value of the savings are worth modelling too, because a system that simple-pays in six years keeps generating free electricity for two decades after that. Every unit you self-generate displaces a grid unit you would otherwise buy at the retail rate, and grid retail prices are far higher than the export rate, which is exactly why a pub with a steady daytime load pays back faster than a building that exports most of its power.

Three ways to fund it

You do not have to pay cash. There are three routes, and which one fits depends on your business.

Cash purchase with tax relief. If you buy outright, solar is a special-rate plant-and-machinery asset, and the first £1m of qualifying spend is covered at 100% by the capital allowances Annual Investment Allowance. For a limited company that means an effective saving of up to 25% in year one at current corporation tax rates. A £40,000 pub solar system can therefore cost a profitable company nearer £30,000 net once the tax relief lands.

Asset finance. This keeps the system on your balance sheet but spreads the cost over seven to fifteen years. For a daytime-busy pub the monthly repayment is typically lower than the monthly saving from day one, so the system is cash-positive immediately and your capital stays free for the front-of-house work that actually drives covers.

Power purchase agreement. On a PPA you pay nothing up front. A funder owns the system and you simply buy the power it produces at a rate below your current grid tariff, with savings from day one and the asset off your balance sheet. PPAs suit larger sites and managed estates rolling solar across many pubs at once.

The benchmark that matters

The real test is the cost of the power against the grid. A well-designed pub array produces electricity at a levelised cost well below what you currently pay per unit to your supplier, and it does so for 25 years while grid prices keep moving. Export earns income on top through the Smart Export Guarantee, though for most pubs the bigger prize is the self-consumed power, not the export. There are also grants and reliefs that improve the case further, including support for EV charging, which are covered in full on our grants and funding page.

Timeline and cash flow

From first conversation with an installer to a generating system, the grid connection is often the longest single item. The physical install on a pub is normally a matter of weeks and can usually be planned around trading, with the brief final connection outage booked for a quiet period. From the day it switches on, the system starts cutting your bill, and on finance or a PPA the cash flow can be positive from the first month. The range in the card below is an indicative planning assumption for the pub case.