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Claim this listing4.5
95 Google reviews
1–2 days
Typical install time
£7,500
BUS grant amount
Green Eco Solar Solutions Ltd t/a GESS is an MCS certified air source installer based in Essex. They are registered with the Boiler Upgrade Scheme, meaning they can help you claim up to £7,500 towards your installation.
Based in Essex, CM3 5ZA
Areas served:
4.5
95 Google reviews
Based on verified Google reviews
George Potter
5 stars Really pleased with the service from GESS Renewables. They installed our air source heat pump, solar panels and battery storage, and the whole experience was excellent from start to finish. A big shout out to Richard, who was brilliant from start to finish. His communication was incredible throughout and he made everything easy and straightforward. Also a special mention to George the plumber, who worked day and night to get the job done. He was always thoughtful and considerate of me and my family, which we really appreciated. The team were professional, knowledgeable and easy to deal with, and the quality of the installation was spot on. Everything was explained clearly and the finished system looks great and works brilliantly. Very happy to recommend GESS Renewables.
Graeme
We had our Powerwall 3 and 8.8 kw array installed at the end of October and we couldn't be more pleased with the end result produced by GESS. I carried out extensive research and acquired many quotes – GESS were the only ones that responded promptly and also in person the very next day. Harrison arrived on time when he said he would and took the time to sit down with us and understand exactly what our project needs were and provided expert advice without pressuring us in to a different specification that would be more suitable or easier for them. I found with other companies that they would try to sell you things you didn’t need just to make a quick buck, with Harrison we didn’t feel like they were trying to take advantage of knowledge gaps and just wanted to do a good job all round. Harrison sat with us in person and designed a bespoke system suitable for our property and answered all of our questions with extensive knowledge of different products on the market. GESS also carried out a technical survey promptly and at the agreed time and date, and despite some unusual challenges of being a 3 storey flat roof property the guys had a "can do" attitude and impressed us throughout the installation process with their professionalism and work ethic. I was also delighted with the aesthetically pleasing finish that we have and the guys quite clearly have a strong attention to details and high standards of workmanship. I would also say that even after the installation and moneys paid GESS still delivered all certification and sign offs as you would expect from a professional installation team, as well as providing post installation support on a query that we had. I would highly recommend giving Harrison a call if you are thinking of having a home solar / battery installation
Terry Walton
GESS were recommended by Octopus Energy because I wanted my installation done in a particular way which Octopus couldn't accommodate. From first contact through to completion of the installation I have been impressed by the efficient organisation and execution of all aspects of the work including the scaffolding. The three installers were a great team, leaving me with an incredibly neat and tidy system and it was followed up immediately with the necessary certificating to enable me to move to an exporting tariff. One totally satisfied customer.
Andrea Carnovale
We had an excellent experience with GESS — the whole process was incredibly quick and efficient. RICHARD came out to give us a quote (with couple surveys), and GESS came out interesting and cheapest with the most panels. Best of all, they were able to install the following week after the signed documents (in the coldest day of November). They handled everything: application was sorted quickly, scaffolding went up without a hitch. The team came over to do the survey and took the time to walk us through exactly how the system would work, which really helped build our confidence in the setup. Richard and all the team was brilliant throughout — always quick to respond, really knowledgeable, and happy to answer all our questions. The installation itself was seamless. Great service, great communication, and a really smooth experience from start to finish. That’s GESS Highly recommended!
Father Nick
Efficient, effective and swift service from this company who installed a Tesla battery last year, conducted a very thorough ASHP survey and prepared a quote and fitted a second battery recently. GESS also completed the ASHP installation today. Excellent value for a five day project. Works really well. Their plumber and apprentice worked hard and to a very high standard, being meticulous about cleaning and tidiness. Willing to answer lots of questions. A first rate job from very knowledgeable and diligent technicians. Really pleased. The neatness of the work can be seen in the photographs. Highly recommended.
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We are MCS‑certified and registered with an approved consumer protection/competent person scheme, which is essential for quality assurance and to access grants like the Boiler Upgrade Scheme (BUS).
We carry out a detailed home assessment, including property type, insulation levels, existing heating system and available outdoor space, to confirm whether a heat pump is a good fit.
We design the system using a heat‑loss calculation for your home, then match the correct kW size and model (for example, air‑source vs ground‑source) so it runs efficiently and reliably.
Our fixed quote clearly lists the heat pump, cylinder, controls, labour, scaffolding (if needed), electrical work and any radiator or pipework upgrades, so you know exactly what you’re paying for.
Yes, as an MCS installer we can confirm your eligibility, apply for the BUS grant (worth up to £7,500) on your behalf and deduct it directly from your quote.
A typical air‑source heat pump installation takes around 2–5 days, and we’ll agree locations for the indoor and outdoor units, manage any planning considerations and keep you informed each day.
After the heat‑loss survey, we’ll advise if any radiators, pipework, electrics or hot‑water cylinder need upgrading so the system can run efficiently at lower flow temperatures.
Modern heat pumps are designed to be quiet and must meet UK noise regulations; we’ll position the unit to minimise any impact on you and your neighbours and comply with local planning rules.
You’ll get manufacturer warranties on the heat pump plus our workmanship guarantee, and we offer ongoing servicing and support to keep your system performing at its best.
We’ll estimate your likely annual running costs and potential savings based on your current fuel type, insulation level and tariffs, using real‑world performance data rather than lab figures.
Boiler Upgrade Scheme
Up to £7,500
off your heat pump installation
This installer handles the full BUS grant application — deducted directly from your quote. No upfront payment needed for the grant amount.
Scheme open until 2028 — limited funding available
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