Tethys Energy Ltd

I am happy to fully endorse Tethys Energy Ltd. I already have a Growatt system with a Tesla PowerWall v2 on my house roof. This was installed by another organisation. There was nothing wrong per se with that organisation (UK National), but I always felt I was paying above market rate and all the contacts there kept turning over. There was no memory of my install and therefore, no support based upon this memory around how to augment my existing setup with more panels and a DC side stackable/scalable battery system. Enter Jason of Tethys. We had an excellent series of conversations. He understood my desire not to replace the existing equipment and understood that I didn't want to approach the DNO to get a green light on a 10KW connector to the grid. Instead, I wanted a DC side battery with the new system feeding out via the existing system to the grid for exports. The system was/is very bespoke, but his team should great endeavour and got the job done. This is a unique setup. It is not perfect (as a result of the integration between different manufacturers, and not due to with Tethys team). There were some issues and Growatt were contacted and sent in an engineer but all was handled by Tethys and I am as a result very pleased with my setup, its peak generation throughout the day and how the overall system now meets my families energy needs and gives us almost total power independence (not quite in the dark of winter).

Very professional team. Straightforward from proposal through to commissioning. The installation of solar panels, batteries, and energy diversion to heat water has worked perfectly since installation two months ago. Pretty much off-grid through the summer months. Installation team were brilliant and did a neat and tidy job. Good level of consultation around details of cabling, etc. Would not hesitate to recommend this company

Tethys Energy - Jason and the team - did everything right from initial contact through to final delivery. They always delivered what they said, when they said, and often went above and beyond to ensure I was happy with every detail of the work. The team were friendly and competent, without exception. Every bit of the work was carried out to a high standard, with a focus on customer satisfaction at every stage. Even where work was already completed, the team would make adjustments to better suit my requirements. The equipment they selected for my home was of the highest quality, and from day one delivered way more power from the system than I was originally anticipating. All this - and at the same or a better price than the 'big boys', (whose reviews are certainly not to the same 5* standard you see here for Tethys Energy). So, in summary, I would strongly recommend you to discuss your requirements for solar power with Jason and the Tethys team..... and don't waste your time on those 'big advertisers'.

Can highly recommend Tethys Energy. They are professional, quick to respond, accommodating and courteous, and provided a first-rate service. The quotes/options they provided were clear and detailed, and also appropriate to my circumstances and limited roof space (unlike another quote from a different provider). All paperwork was completed and sent promptly, and I was given a clear and helpful explanation of the system and app upon completion. I felt I received a personal service, which gave me confidence in the project. They were efficient and kept to their commitments. The work was done as part of a much bigger building project, and they were flexible in fitting in with that work. If I had it to do over, I would use them again without any hesitation.

I had solar and a Tesla Powerwall 3 installed. I had a few quotes from other companies and I wasn't impressed with their cabling routes and quotes. Jason from Tethys came and assured me of a better way of doing it as I did not want trunking for the cables all at the front of the house/hallway, as other companies had suggested. I got a much better specification system for the same price as one of my quotes. We had a power cut within a month of the system being installed and the powerwall kicked in as it was designed to do. So far the system has saved me more than I expected it to. I will use them again for when I need a car charger installed and I would recommend them.

Tethys provided an excellent service from start to finish. Recommended by a neighbour and WHICH we phoned Jason for a quote. Quickly organising a home visit and very happy to talk through all our options providing multiple quotes for various ideas. We had quotes from many competitors - some cheaper, some more expensive. But we like to support local business as it gives peace of mind that support is close. I am glad we did. Jason quoted a start date which was kept, the works carried out on time, the agreed price never changed and all the workers were willing to work with all our requirements for a neat and tidy install - I felt the installation was done with pride. Slight teething issue with wiring at the start on our first car charge via solar, but very quickly resolved which was zero hassle and good support. We have been recommending to all our friends who might be thinking about solar in the future. I can't comment on aftercare since the initial install as nothing has gone wrong! - and with the unusual sunny spring - we are enjoying the quilt free power generation for our home and car. Also note, all paperwork and communication was completed to the National Grid on our behalf with no hassle so we are now exporting power to other users across the network. Super job all round

Really pleased with our solar and battery installation. From Jason's initial visit, resulting in detailed plans and costings, to the installation led by Chris we found that Tethys were professional and knowledgeable. Our roof is complex, but they were happy to work with us to maximise the number of panels we could install - ending up with 20 where other suppliers said they couldn't even install 2! The installers were careful, neat and tidy and were happy to work with us to minimise the amount of visible cabling. Pricing was transparent, and the cost of modifications agreed up front. They have remained responsive after the installation was completed. We have already recommended them to a couple of neighbours who have expressed an interest.

I have no hesitation in recommending Tethys Energy. Jason and his team were very efficient, comms very good, they always explained and kept us informed and their installation of solar panels and a Tesla battery was exemplary. First class!

I can't improve on what a previous customer wrote : "From the moment I contacted Tethys Energy I experienced a polite and courteous team. They always turned up on time, answered phone calls and emails promptly. Once on site the team always kept me informed of progress. The installation looks neat and tidy. They took time to explain how the system and app work. Follow up paperwork came within a matter of days. I would have no hesitation in recommending Tethys Energy. "

From the moment I contacted Tethys Energy I experienced a polite and courteous team. They always turned up on time, answered phone calls and emails promptly. Once on site the team always kept me informed of progress. The installation looks neat and tidy. They took time to explain how the system and app work. Follow up paperwork came within a matter of days. I would have no hesitation in recommending Tethys Energy.