With energy bills climbing and sustainability now front of mind for customers, there’s never been a better time for businesses to go green. Solar panels offer a smart, long-term way to cut electricity costs, reduce your carbon footprint and show you’re serious about environmental responsibility. Whether you’re running a school, warehouse, or office space, installing solar is one of the most visible and valuable steps you can take.
To help you get started, we’ve pulled together a list of the top 10 solar panel installers in Northamptonshire. Each company has been carefully selected based on customer reviews, services offered, and regional presence.
1. Perfect Sense Energy
Ranked #1 in the UK for solar installation, Perfect Sense Energy leads the industry. It designs, supplies, installs and maintains renewable-energy systems for commercial clients nationwide. Over 14 years the company has built a reputation for delivering complex rooftop and ground-mount arrays on time and on budget, often acting as principal EPC for blue-chip manufacturers and NHS trusts.
Office Location: Oakland House, 21 Hope Carr Road, Leigh, WN7 3ET
Website: perfectsenseenergy.com
Year Founded: 2010
Team Size: 11–50 employees
Industries Served: Commercial buildings, manufacturing, education, healthcare, agriculture
Case Studies: View all case studies
2. Green Building Renewables (Daventry branch)
Part of the fast-growing 21° Group, Green Building Renewables offers solar panels, batteries, EV chargers and heat pumps for homes and small businesses. Their Daventry team covers Northamptonshire and is part of a larger network across the country. They use their own trained engineers, which helps them keep quality high and customer service personal.
Office Location: 3A Brunel Close, Daventry, NN11 8RB
Website: greenbuildingrenewables.co.uk
Year Founded: 2011 (re-branded 2022)
Team Size: 100 staff across 11 hubs
Industries Served: Homes, SMEs, new-build developers, public sector
Case Studies: View all case studies
3. 3S Northampton Ltd
3S is a well-established electrical company that also installs solar panels, especially for factories and warehouses. They’ve been in business for 30 years and have a local team who know how to work quickly and safely, even in busy workplaces. Their team also offers maintenance and repairs when needed.
Office Location: Unit 30, Weedon Road Industrial Estate, Ross Road, Northampton, NN5 5AX
Website: 3sltd.co.uk
Year Founded: 1994
Team Size: 11 – 50 employees
Industries Served: Warehousing, retail fit-out, manufacturing, logistics
Case Studies: View all case studies
4. Eco-Star Solar
Eco-Star is a new but fast-growing company focused on solar panels for homes. They explain everything clearly and help people understand how solar can save them money. Customers praise their tidy work and friendly service, and they offer smart tech like batteries and EV chargers too.
Office Location: 4A Pond Wood Close, Moulton Park Industrial Estate, Northampton NN3 6RT
Website: ecostarsolar.co.uk
Year Founded: 2023
Team Size: 10 – 30 employees
Industries Served: Residential, small business, retrofit electrification
Case Studies: View all case studies
5. Moulton Solar
A true local independent, Moulton Solar prides itself on being small enough for personal service yet big enough to secure wholesale panel prices. They fit solar panels, batteries, and EV chargers, and they even offer extras like bird-proofing to protect your roof. Customers like them for being clear, professional, and easy to deal with.
Office Location: Moulton Park Business Centre, Redhouse Road, Northampton NN3 6QA
Website: moultonsolar.com
Year Founded: 2015
Team Size: 1 – 10 employees
Industries Served: Homeowners, small commercial premises
Case Studies: Not available
6. Commercial Solar PV
This company specialises in large solar projects for factories, warehouses, and public buildings. They help clients choose the right system and offer different ways to pay, including leasing and power purchase agreements. Their team works all over the country, including Northamptonshire.
Office Location: Regional team covering NN postcodes (online enquiries only)
Website: commercialsolarpv.co.uk
Year Founded: 2014
Team Size: 51 – 100 employees
Industries Served: Manufacturing, warehousing, public sector roofs
Case Studies: Not available
7. Northampton Solar
Founded by ex-forces engineers, Northampton Solar combines military-grade project planning with a friendly, family-run ethos, focusing on solar systems for homes and rural buildings. They offer free roof surveys using drones They’re also known for including useful extras like EV chargers at a fair price.
Office Location: Serves the county from Northampton (mobile workforce)
Website: northamptonsolar.net
Year Founded: 2018
Team Size: 1 – 10 employees
Industries Served: Homes, light-industrial units, rural properties
Case Studies: Not available
8. Let’s Go Solar Ltd
Let’s Go Solar installs high-quality solar panels and batteries and is known for clear communication and honest pricing. Although based in Cambridge, they work in Northampton and have a local team. They also offer payment plans and flexible installation times, including weekends.
Office Location: 32 Sheppard Way, Teversham, Cambridge CB1 9AX
Website: letsgosolarltd.co.uk
Year Founded: 2022
Team Size: 11–50 employees
Industries Served: Domestic retrofit, SME offices, EV fleet charging
Case Studies: View all case studies
9. Solar4Good UK Ltd
Solar4Good is a family business that has installed thousands of systems across the UK. They’re now focusing more on Northamptonshire and nearby areas. Customers like their low prices and friendly support, and they even organise open days where new customers can see systems in action.
Office Location: 79 College Road, Harrow HA1 1BD; regional crew in Peterborough PE1 1DH
Website: solar4good.co.uk
Year Founded: 2010
Team Size: 51–200 employees
Industries Served: Residential solar & storage, community buildings
Case Studies: View all case studies
10. Prime Time Solar
Prime Time Solar has been fitting solar panels since 2010 and now covers Northamptonshire from Essex. They offer long warranties and let you design your own solar layout online before buying. With no upfront payments and evening appointments, they’re a good fit for busy families.
Office Location: Choles Yard, 284 High Road, North Weald, CM16 6EG
Website: primetimesolar.co.uk
Year Founded: 2010
Team Size: 11–50 employees
Industries Served: Domestic PV + battery, EV chargers, retrofit O&M
Case Studies: View all case studies
How we picked and ranked the installers
We scored more than 25 firms serving Northamptonshire against five weighted criteria:
| Criterion | Weighting | Data points checked |
| Accreditation & compliance | 25 % | MCS, HIES, RECC, NICEIC, TrustMark registers |
| Years in operation & track record | 20 % | Companies House filings, website “About” pages |
| Customer reputation | 20 % | Google/Trustpilot/TrustATrader ratings, case-study volume |
| Breadth of services | 20 % | Design, EPC, financing, O&M, battery & EV options |
| Local presence | 15 % | Office in (or dedicated team for) Northamptonshire |
The Bottom Line
Choosing the right installer can make all the difference when it comes to getting the best results from your solar investment. The companies featured in this list are all reputable, experienced and well-suited to businesses in Northamptonshire.
Perfect Sense Energy combines deep industry knowledge with a turnkey approach that takes the hassle out of going solar. Whether you’re exploring options or ready to get started, our team is here to help. Get in touch today to book a consultation and see how much your business could save.
FAQs
Who are the best solar panel installers in Northamptonshire?
The best solar panel installers in Northamptonshire include Perfect Sense Energy, Green Building Renewables, 3S Northampton Ltd, Eco-Star Solar and Moulton Solar. These companies were selected based on customer reviews, industry experience, accreditations and local service coverage.
How do I choose a reliable solar installer for my business?
To choose a reliable solar installer, check for MCS certification, strong customer reviews, commercial project experience and clear aftercare services. Always ask for case studies and get a detailed quote that includes performance estimates, warranties and maintenance plans.
Can my business save money with solar panels?
Yes, solar panels can significantly reduce electricity bills for businesses by generating free power during the day. Many commercial systems pay for themselves within 5–7 years and continue saving money for 20+ years, especially when paired with battery storage.
Are there grants or incentives for commercial solar in the UK?
Yes, UK businesses may benefit from schemes like the Smart Export Guarantee (SEG), capital allowances, and regional sustainability grants. These incentives can improve return on investment and lower upfront costs. Your installer can help identify what’s available.
How much does it cost to install solar panels for a business?
The cost to install solar panels for a business typically ranges from £10,000 to £100,000+, depending on system size, roof type, and battery options. A typical commercial install costs around £750–£1,200 per kW. Getting a bespoke quote is the best way to understand exact pricing.
