Spectrum Energy Systems designs and installs commercial solar panels for businesses across the East Midlands, and further afield for the right project. Panels on your own roof cut the amount of electricity you buy from the grid from day one, and a well sized system typically pays for itself in 4 to 7 years, then keeps generating for another 20. We have been doing this since 2011: over 1,000 installations and more than 10MW connected to the grid.
Commercial Solar Panel Installation Services in the UK
We install commercial solar arrays on warehouses, factories, offices, farm buildings and industrial units. One team handles the whole job: survey, structural checks, design, the G98 or G99 grid application, installation, commissioning and the handover paperwork.
- Daytime imports drop from the first week, and a large share of your energy cost is fixed for 25 years or more.
- Pair the array with commercial battery storage to shift consumption and earn more from export tariffs.
- Our own engineers survey, install and commission. Nothing gets passed around subcontractors.
- Remote monitoring and maintenance keep generation where it should be.
Planning Your Commercial Solar Installation
Initial Commercial Solar Consultation & Site Survey
We assess your business’s energy needs and the feasibility of commercial solar panel installation at your site.
Commercial Solar System Design & Engineering
We handle the grid application process, act as your point of contact for grid connection, and guide you through planning approvals.
Planning Permission & Grid Compliance
From initial applications to installation and witness testing, we manage all necessary grid liaison tasks.
Commercial Solar Installation & Integration
Our expert team ensures a smooth installation with minimal disruption to your business operations and seamless system integration.
Post-Installation Support & Ongoing Maintenance
We provide assistance with grid connection agreements and comprehensive maintenance packages to keep your system performing at its best.
Commercial Solar Costs, Payback and Returns
Every Spectrum quote is one all inclusive price, plus VAT. It covers design, materials, scaffolding, labour, the grid application, commissioning and handover documentation. There are never any hidden extras with us.
A smaller commercial system typically starts around £20,000 +VAT. Larger installations run from £40,000 to £100,000 +VAT, and multi site projects go beyond that. As a recent example, we designed a 49.68kWp system with 51.2kWh of battery storage for a business using 40,000kWh a year. The payback came out at circa 4 years.
We model your consumption, generation and export against your actual tariff, so the proposal shows what the system will genuinely earn rather than a brochure figure.
UK Tax Relief and Commercial Solar Incentives
Solar PV normally qualifies as a special rate asset, so companies can claim the 50% first year allowance or use the Annual Investment Allowance, which gives 100% relief up to the £1 million limit. Our guide to solar PV capital allowances covers the detail, and your accountant will confirm what applies to your business. The Smart Export Guarantee pays for electricity you export through a licensed supplier tariff.
Environmental Benefits of Commercial Solar PV
A 100kWp commercial installation in the UK typically generates around 90,000kWh a year. At current grid carbon intensity that avoids roughly 18 tonnes of CO2 annually, and the panels keep producing clean electricity for 25 years or more with no noise and no emissions on site. Plenty of our commercial customers also use the system in ESG reporting and tender responses, where on site renewables count in your favour.
Check the Grid Before You Commit: the £500 DNO Application Service
Grid capacity decides what you can install, so it pays to know the answer before you spend serious money. We run the G99 or G98 application as a standalone service for £500: a site assessment, the application form prepared end to end, a single line diagram of the proposed system and submission to your DNO. If you go ahead with Spectrum, the £500 is credited to your installation.
How Commercial Solar Panels Benefit UK Businesses
Commercial solar gives a business cost certainty. Once the array is on the roof, a large share of your electricity is generated at a known cost for decades, which takes the sting out of price rises. It also shows customers and investors that the business takes its energy use seriously.
- Lower overheads and better margins
- Protection against electricity price increases
- Stronger ESG and tender credentials
- Less reliance on the grid at peak prices
Roof vs Ground Mounted Commercial Solar Systems
Commercial rooftop solar installations maximise existing space utilisation without requiring additional land, making them ideal for most business premises. Ground-mounted commercial solar panels offer superior accessibility for maintenance whilst accommodating larger system capacities where land availability permits. Our commercial photovoltaic installation experts assess your site conditions, structural requirements, and energy needs to recommend the optimal mounting solution.
System comparison considerations:
- Roof-mounted systems utilise existing structures with minimal land requirements
- Ground-mounted installations allow optimal panel orientation and easier maintenance access
- Structural assessments ensure safe installation on suitable roof types
- Planning considerations vary between mounting options depending on local authority requirements
Thinking about a field or yard array instead of the roof? Read our guide to installing solar panels on the ground in the UK.
Commercial Solar by Sector
Every sector uses energy differently, and the design follows the load. Pick your sector for the detail:
- Solar panels for commercial buildings, including new builds
- Manufacturing and industrial units, where industrial solar panels carry high daytime loads
- Production facilities
- Agriculture and farm buildings
- Growers and greenhouses
- Retail and supermarkets
- Offices
- Schools and colleges
- Public sector buildings
- Car showrooms
- Property developers
Solar Carports for Commercial PV Installations
Solar carports combine practical vehicle protection with efficient energy generation, creating dual-purpose infrastructure that maximises commercial property utilisation. These innovative commercial PV installation solutions provide covered parking whilst generating clean electricity, particularly suitable for retail centres, office complexes, and industrial facilities with extensive parking requirements. Our design team creates bespoke solar carport solutions tailored to your specific site requirements and aesthetic preferences.
Solar carport benefits include:
- Weather protection for vehicles whilst generating renewable energy
- Efficient use of parking areas without sacrificing ground space
- Enhanced customer experience through covered parking facilities
- Distinctive architectural features that demonstrate environmental commitment
Battery Storage for Commercial Solar PV Systems
Most commercial roofs generate more than the building uses in the middle of the day. A battery holds that surplus so you can use it when it is worth most: covering your own late afternoon load, or exporting when half hourly export tariffs pay their highest rates. Sized properly, a commercial battery is not just a backup box. It earns.
- Store midday surplus instead of exporting it at flat rates
- Reduce peak demand charges
- Keep critical operations running through an outage
- Automated charging and export decisions matched to your tariff
See our commercial battery storage page for more.
Solar Inverters, Monitoring & Smart Metering
The inverter converts DC from the panels into AC your building can use. We fit Solis inverters on most commercial systems because they have proved reliable across our installs, and we install more Solis than anything else for good reason. Remote monitoring comes as standard so we and you can see exactly what the system is doing, along with generation and export metering. For existing commercial arrays we also handle inverter replacement.
Ongoing Commercial Solar Monitoring & Maintenance
Monitoring picks up most problems before they cost you generation. Our commercial solar maintenance services cover regular inspections, cleaning and component replacement when needed, which keeps the system inside its warranty terms and performing as designed.
- Remote monitoring with automated alerts
- Annual inspections and preventive maintenance schedules
- Repairs scheduled promptly during working hours
- Performance reporting against expected yield
Grid Connection, Permissions & Compliance UK
We prepare and submit grid applications, undertake witness testing and provide all commissioning documents.
- G98 vs G99: small systems up to 16A per phase fall under G98; anything larger is a G99 application needing DNO approval.
- Electrical compliance: protection settings, generation and export metering, and the relevant British Standards.
- Handover pack: single line diagrams, O&M manual, commissioning sheets, warranties and monitoring access.
Not ready for a full project yet? Our £500 DNO application service answers the grid question first, and the fee is credited to your installation if you choose Spectrum.
Reference: National Grid distributed generation connection guides (G98 up to 16A per phase; G99 otherwise).
Our Proven Commercial Solar Installation Process
Step 1: Initial Survey and Proposal
We assess the roof, the electrical systems and your consumption pattern, then design the system and send a proposal with specifications, financial projections and the payback calculation.
Step 2: Grid and Planning Permissions
We handle the G99 application with your Distribution Network Operator and any planning requirements, and we coordinate with the authorities until approval lands.
Step 3: Installation and Handover
Installation takes 2 to 5 days on site depending on size, with testing and commissioning before handover. We plan the work around your operations so disruption stays minimal.
Paying for Commercial Solar
We keep the money side simple: one written quote, one all inclusive price, plus VAT. We do not sell finance and we do not take commission from lenders. If you plan to fund the project through your bank or an asset finance provider, our quote gives you and your lender an exact figure to work from, and we supply the technical documentation they ask for.
For funding routes other businesses have used, see funding solutions for solar energy.
Grants & Incentives for Commercial Solar Projects
There is no national grant for commercial solar, and it is worth being wary of anyone who tells you otherwise. The support that does exist is still worth having: capital allowances on the purchase, Smart Export Guarantee payments on exported power, and the occasional local authority scheme. We flag anything your project qualifies for during the feasibility assessment.
Recent Commercial Installations
The best evidence is work we have already done. A few recent commercial projects:
Why Choose Spectrum Energy Systems?
MCS Certified Installer NIC200223 · NICEIC Approved Contractor · RECC Member
Spectrum has been installing solar since 2011. Over 1,000 installations, more than 10MW connected to the grid, and the same team handling survey, grid application, installation and commissioning. Every install carries our 5 year workmanship guarantee, and we hold £10 million employers liability and £5 million public liability insurance.
We turn quotes around in 24 hours, and the site survey costs you nothing.
Commercial solar FAQs
What size solar system do businesses typically install?
It depends on roof area, grid capacity and how much electricity you use. Many of our commercial installs sit between 20kWp and 100kWp, and where it suits the site we design at just under 50kW so the system keeps MCS eligibility. Larger sites can carry several hundred kWp, subject to what the DNO approves.
Why should I install commercial solar panels?
They reduce energy costs, cut carbon emissions, increase property value, improve brand reputation, and provide energy independence with a solid long-term ROI.
What is the cost to install commercial solar panels?
Most of our commercial projects land between £20,000 and £100,000 plus VAT, depending on system size and access. You get one all inclusive price covering design, scaffolding, materials, labour, the grid application and commissioning.
What are the financial benefits of commercial solar panels?
Lower electricity bills, capital allowances on the purchase, Smart Export Guarantee income on exported power, and a payback of typically 4 to 7 years on a well sized system.
Will we need planning permission for commercial solar panels?
Most roof-mounted arrays are permitted development; ground-mount/carports and certain locations may need consent. We advise at survey and, if required, assist with applications.
Do we qualify for tax relief or export payments?
Yes: PV is a special-rate asset eligible for the 50% FYA and/or AIA (subject to company circumstances). Export can be paid via a Smart Export Guarantee tariff where eligible. Speak to your accountant; we’ll provide project documentation.
What's included in your turnkey service?
Survey, design & yield modelling, G98/G99 applications, RAMS, installation, testing & commissioning, training, warranties, and 24/7 monitoring with optional O&M.
Can you check our grid connection before we commit?
Yes. Our standalone DNO application service costs £500 and covers the site assessment, the G99 or G98 form, the single line diagram and submission to your DNO. If you go ahead with Spectrum, the £500 is credited to your installation.
How long does a commercial solar installation take?
Most commercial installs take 2 to 5 days on site. The longer wait is DNO approval before work can start, which usually takes 2 to 4 weeks.
