Cinergi - Renewable Energy Solutions installs air source heat pumps, solar panels, battery storage and EV chargers around Southampton, with reviewers naming a large in-house team including Dave, Max, Charlie, Jack, Alex, Louie, Lewis and office staff Kate, Danielle and Shannon, alongside owner Ian, for thorough, well-communicated projects. Customers repeatedly praise detailed heat loss and system design work matched to older or unusually shaped properties, tidy cable routing to minimise visible impact, and post-installation support including snagging visits. Several reviewers compare Cinergi favourably against other quotes for using its own staff rather than subcontractors. Feedback is consistently strong on organisation and technical knowledge. As a heat pump and solar installer in Southampton, Cinergi - Renewable Energy Solutions holds a 5-star average from 154 Google reviews.
Reviews
5.0 / 5 · 154 totalWe are most impressed with our heat pump system and the whole team at Cinergi. The system has performed faultlessly for 6 months so far since its installation in Dec25. Cinergi were excellent at each stage of the process. Dave, our installation engineer did a brilliant job as did the whole team.
We got several quotes for a ASHP but chose Cinergi as it was a independent, family run business with their own staff undertaking the works and not 3rd party contractors. We have had a lot of upgrade works undertaken on our property with different contractors but Cinergi was by far the smoothest. We would not hesitate to recommend Cinergi to others. Max led the installation with the help and hard work of Theo and Tommy. All the team were polite, kept the site tidy and completed the works without any issues. Max in particular was exceptional in his organisation, keeping us informed each day, answering our questions and ensuring all the works were done to a very high standard. He clearly takes pride in his work and he's a credit to the company.
Really impressed with Cinergi from start to finish. The survey and design process was thorough, the installation team were brilliant and did a fantastic job, and the after-sales support has been great. The system has been running perfectly and the data is already showing the benefits. Would highly recommend.
Fantastic service for the survey, design and installation of our solar panels and batteries by a great group of people. Cinergi HQ (including Jamie, Kate and Danielle) were incredibly helpful, organised, professional and flexible. The installation team of Jack, Ben, Alex and Louie were a pleasure to have in the house and were really fast and effective. Thanks to all. Part 2 of review as the ASHP and heating system has been installed. Once again, Cinergi has surpassed my expectations....the new system is well designed (to match the insulation and design of the house), efficient and finished with a real eye on the detail. Huge thanks to Lewis and Charlie for the installation and James and Ian for the design and support. An ongoing, unreserved, strong recommendation for Cinergi.
Cinergi recently installed an ASHP for my self build and the service has been excellent. Charlie did a great job installing and the standard of install is excellent. Price was competitive if not better than most and the whole team from quoting to installing have been supportive and I've been informed at every step. I would definitely recommend their services.
Cinergi are with you for the journey! Cinergi installed a large solar, battery, gateway and EV charger system for us at the end of 2025. 36 x Aiko panels, SigenStor (2 x 10 BAT), Sigenergy Gateway and Sigenergy EVAC wall box. They are a professional outfit, but with a distinctly family feel providing warm engagement throughout. They were the fastest to respond after initial contact, and the first to release a quote. They worked with us to design the system that we wanted and was right for us - where it seemed some others tried to sell us the system they wanted to sell. They had endless patience while we explored different variations of system size, product types, installation locations etc, re-quoting each time without fuss. Come the installation, the guys were friendly, courteous, clean and hardworking - despite what the weather through at them. The results are outstanding. Cinergi’s post-installation support has been excellent, with on-site follow-up inspections, snagging items and answering our questions. With great service, friendly nature, competitive prices, quality installation and after care, Cinergi are with you all the way for your journey. Huge thanks to Shannon, James, Kate, Danielle, Alex, Louie, Josh, Jack and Ben who have all played their part in our journey.
Really happy with our solar panel system installed very promptly by Jack and Alex who were friendly and efficient. We received a lot of useful info and advice from everyone we dealt with at the company including Adam and James. Also we had great communication throughout from Shannon, Kate and Danielle in the office. Would definitely recommend using them if you are wanting to go down a different energy route.