Commercial Solar Panel Installation
in Milton Keynes
Systems from 10kWp to 100kWp+. Typical ROI in 3–5 years. Cut your business electricity costs with a properly designed, MCS-certified solar system.
Why Solar Makes More Sense for Businesses Than Homes
Commercial solar installations typically pay back faster than residential ones. The reason is simple: businesses consume most of their electricity during daylight hours — exactly when solar panels are generating. That means a higher proportion of solar generation is used on-site rather than exported at lower rates.
A commercial building in Milton Keynes using 60–80% of its solar generation on-site will see significantly better returns than a home where occupants are out during the day.
- Higher self-consumption — daytime business operations match solar generation hours perfectly
- Reduced operating costs — lock in a portion of your electricity at zero marginal cost for 25+ years
- Carbon reduction — measurable CO2 savings for environmental reporting and net zero targets
- CSR and brand value — demonstrate genuine commitment to sustainability to customers and stakeholders
- Enhanced Capital Allowances — claim 100% first-year tax relief on qualifying solar equipment
Commercial vs Residential ROI
Figures are indicative. Your free site survey will provide exact projections based on your energy usage and roof space.
Get a Free Commercial SurveyCommercial Solar System Sizes & Costs (2026)
Indicative pricing for commercial solar installations in the Milton Keynes area. Your exact quote depends on roof type, structural requirements, access, and system specification.
| System Size | Panels (approx.) | Installed Cost | Annual Generation | Typical Annual Saving |
|---|---|---|---|---|
| 10kWp | 24–26 panels | From £12,000 | ~9,000 kWh | £2,000–£2,700/yr |
| 20kWp | 48–52 panels | From £22,000 | ~18,000 kWh | £4,000–£5,400/yr |
| 50kWp | 120–130 panels | From £45,000 | ~45,000 kWh | £10,000–£13,500/yr |
| 100kWp+ | 250+ panels | Bespoke quote | ~90,000+ kWh | £20,000+/yr |
Prices include all equipment, labour, and standard access. Based on south-facing commercial roofs in Milton Keynes at ~900 kWh/kWp/year. Savings estimated at 25p/kWh import rate with 70% self-consumption. Your survey will give precise figures.
Commercial Solar for Every Type of Business
We design and install commercial solar systems across a range of building types in Milton Keynes, Buckinghamshire, Bedfordshire and Northamptonshire.
Warehouses & Industrial Units
Large flat or low-pitch roofs are ideal for solar. Warehouses in Milton Keynes' industrial estates often have unobstructed south-facing roof space for 50kWp+ systems.
Offices & Business Parks
Office buildings with consistent weekday electricity demand see excellent self-consumption rates. Air conditioning, lighting, and IT loads align perfectly with solar generation.
Farms & Agricultural Buildings
Farm buildings with large roof areas are well suited for solar, and agricultural businesses benefit from reduced energy costs for cold storage, processing, and irrigation.
Schools & Public Buildings
Schools benefit from solar during term-time hours when electricity demand is highest. Many schools in Milton Keynes have already installed solar — the savings go directly back into education budgets.
Retail & Hospitality
Shops, restaurants, and hotels with high daytime energy use for lighting, refrigeration, and HVAC can significantly reduce operating costs with a well-designed commercial solar system.
Care Homes & Healthcare
Care homes operate 24/7 with high baseline loads for heating, hot water, and lighting. Solar with battery storage can make a substantial dent in energy costs for these facilities.
The Commercial Solar Installation Process
Site Survey & Energy Analysis
We visit your premises, assess the roof structure, orientation, and shading. We also analyse your electricity bills and half-hourly consumption data to understand when you use the most energy. This lets us size the system for maximum self-consumption, not just maximum capacity.
System Design & Proposal
You receive a detailed proposal with system layout, generation projections, financial modelling (payback, IRR, lifetime savings), and a fixed-price quote. No ambiguity. We also advise on available incentives including Enhanced Capital Allowances.
Installation
Our MCS-certified team installs the system with minimal disruption to your operations. We coordinate around your schedule and handle all access, scaffolding, and safety requirements. A typical 20kWp system takes 2–3 days.
Commissioning & DNO
We commission the system, complete all testing, issue the MCS certificate, and handle the G99 application to the Distribution Network Operator. For systems over 16A per phase, we manage the DNO approval process before installation begins.
Monitoring & Handover
Every system includes monitoring so you can track generation, self-consumption, and exports in real time. We walk your team through the system and provide full documentation. We also register you for the Smart Export Guarantee if applicable.
The Financial Benefits of Commercial Solar
Commercial solar is one of the best capital investments a business can make. Here's why the numbers stack up.
Reduced Electricity Bills
Every unit generated on-site is a unit you don't buy from the grid. At commercial electricity rates of 25–30p/kWh, a 50kWp system generating 45,000 kWh/year could save your business £10,000–£13,500 annually.
Smart Export Guarantee
Any surplus electricity you don't use is exported to the grid and paid for under the SEG. Rates vary by supplier (7–15p/kWh). With an MCS-certified system, registration is straightforward.
Enhanced Capital Allowances
Solar equipment qualifies for 100% first-year capital allowances under the UK's full expensing regime. This means the entire cost of the system can be deducted from taxable profits in year one — a significant tax advantage for profitable businesses.
Commercial Battery Storage
Adding battery storage to a commercial solar system lets you store surplus generation for use during peak tariff periods or after sunset. This increases your self-consumption rate and reduces reliance on grid imports when electricity is most expensive.
For businesses on half-hourly metering or time-of-use tariffs, battery storage can deliver additional savings through peak-shaving — reducing your maximum demand charges by drawing from stored energy during peak periods.
- Store surplus daytime solar for evening and overnight use
- Reduce peak demand charges with peak-shaving
- Backup power capability for critical loads
- Can be retrofitted to existing solar installations
Solar + Battery: Better Together
Adding battery storage to a commercial solar system typically increases self-consumption from 60–80% to 85–95%, significantly improving the overall return on investment.
We design integrated solar and battery systems from the outset, or retrofit batteries to existing installations. Every system is sized based on your actual consumption data — not guesswork.
Discuss Solar + Battery for Your BusinessCommercial Solar FAQs
Commercial solar costs depend on system size and roof type. As a guide: a 10kWp system starts from around £12,000, a 20kWp from £22,000, and a 50kWp from £45,000. Larger systems over 100kWp are priced on a bespoke basis. We provide fixed-price quotes after a free site survey — no hidden extras.
Most commercial solar installations in Milton Keynes achieve ROI within 3–5 years. The faster payback compared to residential systems is driven by higher daytime consumption — businesses typically use 60–80% of their solar generation on-site, compared to 30–50% for homes. After payback, the system generates essentially free electricity for the remaining 20+ years of its life.
We plan every commercial installation to minimise disruption. Most work takes place on the roof and is external to your operations. The electrical connection requires a brief planned shutdown — typically a few hours — which we schedule at a time that suits you. A typical 20kWp system takes 2–3 days to install; larger systems may take a week or more.
The right system size depends on your electricity consumption, available roof space, and budget. We analyse your energy bills and half-hourly data during the free site survey to design a system that maximises self-consumption. There's no point oversizing a system if most of the energy gets exported at 10p/kWh when you're paying 28p/kWh to import. We get the balance right.
Explore More
Residential Solar
Solar panel installation for homes in Milton Keynes. Systems from 3kWp to 6kWp+.
Battery Storage
Store surplus solar energy and reduce reliance on grid imports. Retrofit or new-build.
Grants & Incentives
SEG, Enhanced Capital Allowances and other financial incentives for solar.
Solar Calculator
Get an instant estimate of system size, generation, and savings for your property.
Get a Free Commercial Solar Survey
We'll visit your premises, analyse your energy usage, and provide a detailed proposal with system design, generation projections, and a fixed-price quote. No obligation. No hard sell. Just the numbers.
Or email info@depthoflight.co.uk | Send a message
Mon–Fri, 08:00–17:00 | First Floor 2, Bond Avenue, Bletchley, Milton Keynes, MK1 1SW