100% Recommend GSM Solar panels etc efficient, tidy polite workmanship.
We are an established company with over 35 years of experience in providing renewable energy systems to both commercial and domestic customers
Commercial & Domestic Renewable Energy Specialists
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GSM Limited
Saving energy; reducing costs; improving comfort: these are all things that every business and homeowner should be focused on achieving, and at GSM Ltd, we can help you do just that.
As a trusted engineering partner, we specialise in the design and installation of integrated solar, heating, and cooling systems. Our highly skilled in-house CAD team and dedicated project management department draw on over thirty-five years of industry experience to deliver cutting-edge solutions engineered to maximise efficiency across any indoor environment.
Whether you are looking to future-proof your family home or optimise a complex multi-zone commercial facility, we provide tailored, high-performing systems built around your specific needs.
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Commercial Properties: Our Services
In an increasingly regulation-driven landscape, achieving energy effectiveness is essential for long-term operation efficiency and environment compliance.
Our team at GSM Ltd provides expert guidance and tailored installations for the retail, commercial, and industrial sectors, as well as partnering with architects, consultants, and developers.
Our approach is designed around your operations. We carefully phase installations to ensure minimal disruption to live sites.
From advanced Building Management Systems (BMS) for centralised monitoring to independent multi-zone temperature control, we ensure your facility operates seamlessly without wasted resources.
Reliability and ROI remain the core focus across every installation, including large-scale solar arrays for green compliance, robust heating solutions, and highly efficient air conditioning.
Domestic Properties: Our Services
With rising energy prices and a growing emphasis on sustainability, investing in the right home energy system is a smart, long-term decision.
At GSM Ltd, we understand that every home is unique, which is why we assess your current setup and future goals before designing a bespoke solution.
We specialise in fully integrated home ecosystems.
Whether you want to reduce your reliance on the grid with solar panels, add an EV charger to your driveway, or upgrade to a smart heating and cooling system, we ensure every technology interacts efficiently.
Even if you are just planning for the future, we can design an adaptable system that evolves alongside your household’s energy needs.
From consultation to installation, there is no domestic project too complex for our engineering team.
Why GSM Ltd?
Choosing the right energy partner is about expertise, quality, and trust. We combine decades of experience with a fully in-house approach, meaning we never rely on subcontractors.
When you work with us, you are working with directly employed engineers and designers who are passionate about creating high-performing systems installed to exacting standards.
- Mitsubishi Electric Diamond Partners: we are recognised for our proven technical expertise, granting our clients access to industry-leading equipment, extended warranties, and full technical support.
- In-House CAD Design: we develop fully coordinated system layouts tailored precisely to your building, maintaining total control over quality and delivery.
- Complete Lifecycle Support: our service doesn’t stop at installation. Every client receives full commissioning, training, Operations & Maintenance (O&M) documentation, and the option for long-term maintenance support to give you total peace of mind.
Great company , they did a very Fast high quality install from quote to order to up and running solar and battery storage within a month.
Robert Clark (bikerbob)
From start to finish we have had an excellent experience with this company.
Peter Anderson
I was prompted to look at Solar by a local authority “Solar Together” initiative. Having got an “estimate” and outline through that scheme I had my doubts about the costs. I decided to contact local firms and GSM were recommended by a friend.
I have to say I was very impressed with the whole process. Allan Farr was our PM – he came out scoped the installation and provided a detailed quote the same day. GSM were much more competitive than the previous estimate I had and the proposed installation and equipment felt better all round.
Allan was on top of everything throughout and visited after completion to go through all operating instructions and to provide all the necessary documentation to make sure we were happy.
A great experience all round. I would recommend GSM to anyone considering a solar installation – in fact I have many times already!!
Sam Macleod
Excellent service from start to finish. After being repeatedly let down by other installers I was nervous but the GSM team delivered exactly what I needed when they said they would, quickly and efficiently. The entire Solar system was up and running in less than a day! Very pleased with the install.
Tristram Lee-Jones
GSM Ltd delivered a technically complex renewable energy project in a sensitive public setting with a high degree of professionalism, attention to detail and care for the client’s requirements. Their proactive communication and clear project management structure meant that we were always informed, supported, and confident in the success of the installation.
I would have no hesitation in recommending GSM for future solar PV and decarbonisation works on similar public sites
Brendan Oakley
Fantastic service and installation, highly recommended
Neil Bobbett
GSM were very professional throughout the whole process. The workmen were extremely polite and tidy whilst on site. The solar panels are working very efficiently to supply our electricity needs ( even in this summer!). A slight issue was rectified to a very high standard. All queries have been dealt with quickly and efficiently. Would definitely recommend them.
Aileen Phillips
Just had a solar PV and battery storage system fitted. GSM have done a brilliant job, quote was exactly what we wanted, job started with a few weeks of the quote being accepted. Work has been carried out quickly and efficiently, carried out by friendly, polite and courteous staff who were a joy to have around. Well done GSM
Gill John Davies
What a pleasure doing business with this company! We recently installed a 4.1KWh Solar PV system with Battery Storage.
GSM were without exception, prompt, professional, and did what they said they would, when they said they would. Installers were professional, friendly, neat and tidy, and went above and beyond to ensure my installation was what I wanted and needed.
Still getting to grips with the shedloads of data from the system but we have not spent a penny on electricity in the week after installation. Yes, it’s early May. But we are super impressed and feel that GSM deserve as many stars as you can give them.
If you’ve read this far down…, we had contacted over 10 other suppliers to get quotes and got very few returns. None of whom could deliver in the timeframe reasonable. From quote to installation was 3 months and most of that delay was waiting for better panels that we agreed upon post initial quote.
So, Allan and Sid, Darren, James. THANKS. We look forward to years of cheaper energy and some small relief for our planet too.
Peter Naylor
Service Areas
We offer our services across Gloucester, Cheltenham, Worcester, and Hereford, having grown a reputation as one of the top energy and HVAC solution providers in the region.
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Whether you are looking for solar panel installations, commercial heating, or domestic air conditioning, your property is an important investment.
With just a few steps, you can start making that investment more efficient than ever. We’ll handle the rest.
