Commercial & Domestic Renewable Energy Specialists

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.

GSM have provided the best customer service

Just had a large Solar and battery storage system installed. Quite a complex system with 23 panels spread across house and garage roof giving a 9.2kw capacity along with 23kw battery bank. Less than 3 months from initial contact to completion with the actual install commencing on the originally agreed date and finished in a week. Fantastic team, did an excellent job, very high quality of work, great attention to detail, polite and considerate. No cost surprises either, final amount was as per quote. Unlike many others their terms of business was NO Deposit, first payment once equipment delivered, balance after it was all working.

Would have no hesitation in recommending them.

We were given a competitive price
Conscientious friendly employees did an excellent job
Work completed within their time frame
Sales person Allan knew what he was talking about which is rare these days
We would highly recommend this competitive company

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

Positive experience. Polite and efficient.

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

From start to finish we have had an excellent experience with this company.

Working alongside GSM Ltd during the heating decarbonisation installation at Tewkesbury Council offices, I was particularly impressed with their effective mobile app /  mobile HSE portal. It provided real-time visibility of on-site safety compliance and ensured that any issues, including potential hazards or near misses were flagged and addressed without delay.

Their innovative approach to health and safety, combined with clear documentation and instant access to RAMS and certifications, set a high benchmark. GSM Ltd demonstrated a proactive safety culture throughout — the streamlined delivery of their documents greatly assisted my delivery as CDM Advisor.

GSM have installed a ground source heat pump, 14 panel solar array and powerwall at our property. The quality of their installation is top notch and they were great at solving all the inevitable stumbling blocks that occur in construction works. A real can-do attitude and enthusiasm for the work