Solar Britain helps UK businesses explore commercial solar systems designed to reduce electricity bills, improve cashflow and unlock long-term value from unused roof space.
For warehouses, factories, supermarkets, logistics sites, industrial buildings and commercial property owners.
Adjust the sliders to see live indicative numbers for your site. Based on UK averages — refine on the full calculator for a detailed view.
Tip: a small office ≈ 100–300 m². Tennis court ≈ 260 m². Warehouse ≈ 2,000–8,000 m².
Small shop/office ≈ 10,000–25,000 kWh/yr. 20-person office ≈ 40,000 kWh/yr. Mid factory ≈ 500,000 kWh/yr.
UK commercial average ≈ 25.5 p/kWh.
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0–8% APR, 10 yr
25-year saving estimate
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Based on today's tariff, before inflation and degradation.
Enter your details on the left to reveal your figures. You can keep tweaking the inputs afterwards.
Many UK businesses are paying high electricity costs while thousands of square metres of commercial roof space sit unused. Solar gives suitable businesses a way to generate power on-site, reduce reliance on the grid and create a stronger long-term energy position.
Volatile wholesale prices continue to put pressure on operational budgets and long-term planning.
Thousands of square metres of commercial roof space across the UK currently generate no value for the business below.
Many businesses can't release capital easily — yet still need to reduce energy risk and exposure.
Solar Britain helps you assess whether commercial solar is suitable for your site, estimate potential savings and move from initial interest to a detailed proposal and funding review.
Generate power on-site and lower your reliance on volatile grid pricing.
Operations with strong daytime usage typically self-consume the majority of what they produce.
Sell surplus electricity back to the grid where export capacity and tariffs allow.
Asset finance, PPAs and lease structures can spread or remove upfront capital cost.
Strengthen sustainability credentials with measurable on-site renewable generation.
Turn unused roof space into a productive, long-life energy asset.
Use the free calculator to get an indicative picture of system size, savings and finance.
A short call about your site, energy use and commercial goals to confirm suitability.
Confirm the funding route — self-funded, asset finance, PPA or lease — before any survey or design work begins.
Desktop and site survey, bespoke system design and a detailed commercial proposal matched to your roof and usage.
Planned around your operations, with monitoring and maintenance options.
On suitable sites, funded solar systems may be structured so energy savings and generated income help support the finance costs. This can allow some businesses to become cashflow-positive from day one, subject to site suitability and finance approval.
Large roof areas, daytime operations and EV charging make logistics sites strong candidates.
Explore sectorHigh machinery demand and continuous operations create meaningful self-consumption potential.
Explore sectorRefrigeration, lighting and trading-hours demand line up well with solar generation.
Explore sectorConsistent high electricity demand makes cold storage one of the strongest solar use cases.
Explore sectorProcessing sites and rural commercial premises with large outbuildings and steady load.
Explore sectorImprove asset value, support tenant energy needs and strengthen sustainability credentials.
Explore sectorExample format — full case studies coming soon.
* On suitable sites, with the right energy usage profile and funding structure, commercial solar can be cashflow-positive from day one.
Structural, surface and access assessment before any system is specified.
Where required, planning and permitted development positions are reviewed.
G99 applications, export capacity and connection conditions checked early.
Lender eligibility, structure and headroom reviewed alongside the technical proposal.
Clear panel, inverter, performance and workmanship warranty positions.
Optional remote monitoring and planned maintenance to protect long-term performance.
Commercial solar has a credibility problem — inflated payback claims, unclear quotes and pressure selling. Here's how we work instead. No savings figures until we've seen your site.
Headline yields quoted from best-case southern sites, or vague "up to" figures with no location adjustment.
We model generation for your postcode using MCS irradiance data and your actual roof orientation, pitch and shading — so the yield in your proposal reflects your site, not a brochure average.
Bold "3-year payback" promises based on peak import tariffs, 100% self-consumption and no maintenance cost.
We publish a realistic 4–7 year range and show the assumptions behind it: your tariff, self-consumption %, export price and O&M cost. If your site doesn't stack up, we tell you.
One-size install plan with no discussion of live operations, shutdowns or health & safety on your site.
Phased installs planned around your production calendar, with a written method statement, RAMS and a single site contact. Most rooftop installs need zero downtime.
Panels quoted before any structural review; "we'll sort that later."
A structural roof survey is a prerequisite — not an afterthought. If the roof can't take standard ballast or fixings, you'll hear it before you're asked to sign anything.
Bundled multi-year O&M priced into the deal with limited transparency on what's covered.
O&M is optional and priced separately. You see the scope, the response times and the exit terms up-front, and you're free to appoint another provider.
Non-comparable proposals with different panel specs, different assumptions and hidden exclusions.
One consistent modelling framework: same yield method, same tariff logic, same warranty positions. When you compare us to another quote, it's clear where the difference comes from.
Silence on degradation, inverter replacement and end-of-life.
Panel performance warranties, inverter replacement expectations and recycling routes are all set out in the proposal. Nothing hidden until year 11.
The right answer for your business might be to install now, to phase the project, or not to install at all. A feasibility review tells you which — with no obligation.
Take the first step with a free indicative calculation or speak to the team about a full feasibility review.