Turn unused commercial roof space into lower energy costs
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.
- Commercial solar specialists
- Finance options available
- Planner-led proposals
- Built for UK businesses
- Suitable sites may be cashflow-positive from day one
Your roof could be doing more for your business
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.
High energy bills
Volatile wholesale prices continue to put pressure on operational budgets and long-term planning.
Unused roof space
Thousands of square metres of commercial roof space across the UK currently generate no value for the business below.
Limited cashflow flexibility
Many businesses can't release capital easily — yet still need to reduce energy risk and exposure.
Commercial solar designed around savings, finance and long-term value
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.
Reduce electricity bills
Generate power on-site and lower your reliance on volatile grid pricing.
Use more of your own generated power
Operations with strong daytime usage typically self-consume the majority of what they produce.
Export surplus where suitable
Sell surplus electricity back to the grid where export capacity and tariffs allow.
Explore funded solar options
Asset finance, PPAs and lease structures can spread or remove upfront capital cost.
Improve ESG and carbon reporting
Strengthen sustainability credentials with measurable on-site renewable generation.
Create long-term commercial value
Turn unused roof space into a productive, long-life energy asset.
Get an instant solar estimate
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.
Solar analysis
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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.
From calculator to commissioned system in five clear steps
Calculate your savings
Use the free calculator to get an indicative picture of system size, savings and finance.
Speak with Mike or Dom
A short qualifying conversation about your site, energy use and commercial goals.
Stephen prepares your proposal
A detailed commercial solar proposal tailored to your roof and consumption profile.
Review self-funded or financed options
Compare upfront purchase, asset finance, PPA or lease — whichever fits best.
Install, generate and monitor
Planned around your operations, with monitoring and maintenance options.
Commercial solar does not always need upfront capital
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.
Built for high-energy UK commercial sites
Warehouses & Logistics
Large roof areas, daytime operations and EV charging make logistics sites strong candidates.
Explore sectorFactories & Manufacturing
High machinery demand and continuous operations create meaningful self-consumption potential.
Explore sectorSupermarkets & Retail Estates
Refrigeration, lighting and trading-hours demand line up well with solar generation.
Explore sectorCold Storage & Food Production
Consistent high electricity demand makes cold storage one of the strongest solar use cases.
Explore sectorAgriculture & Processing
Processing sites and rural commercial premises with large outbuildings and steady load.
Explore sectorCommercial Landlords & Property Owners
Improve asset value, support tenant energy needs and strengthen sustainability credentials.
Explore sectorWhat a typical commercial proposal looks like
Example format — full case studies coming soon.
Logistics
- System
- 420 kWp
- Generation
- 357,000 kWh
- Saving
- £62,500 p.a.
- Finance
- Asset finance
- Payback
- 5.8 yrs
Cold storage
- System
- 680 kWp
- Generation
- 578,000 kWh
- Saving
- £118,000 p.a.
- Finance
- PPA
- Payback
- Day-one cashflow*
Manufacturing
- System
- 310 kWp
- Generation
- 263,500 kWh
- Saving
- £48,200 p.a.
- Finance
- Self-funded
- Payback
- 5.2 yrs
* On suitable sites, with the right energy usage profile and funding structure, commercial solar can be cashflow-positive from day one.
A proper commercial solar proposal needs more than a quick quote
Roof suitability checks
Structural, surface and access assessment before any system is specified.
Planning considerations
Where required, planning and permitted development positions are reviewed.
DNO / grid connection review
G99 applications, export capacity and connection conditions checked early.
Finance review
Lender eligibility, structure and headroom reviewed alongside the technical proposal.
Warranty information
Clear panel, inverter, performance and workmanship warranty positions.
Monitoring and maintenance
Optional remote monitoring and planned maintenance to protect long-term performance.
Ready to see whether your roof could reduce your energy bills?
Take the first step with a free indicative calculation or speak to the team about a full feasibility review.