Endorsed by Which?

Sussex Solar Ltd

5.0

134 Reviews

Opening Hours
Today - 09:00–17:00
  • Monday 09:00–17:00
  • Tuesday 09:00–17:00
  • Wednesday 09:00–17:00
  • Thursday 09:00–17:00
  • Friday 09:00–17:00
  • Saturday - Closed
  • Sunday - Closed

Why you can trust this trader

After undergoing rigorous assessment to become endorsed, every Which? Trusted Trader agrees to our Code of Conduct. This gives consumers the reassurance that they have the best possible protection and adds an extra layer of security to ensure best practices and procedures are followed. Which? fully investigates any breaches and will take any necessary action to ensure consumer protection.

About

We are a family-owned, renewable energy company, operating since 2005. We install solar PV panels, Tesla Powerwalls, heat pumps and solar thermal (hot water) systems. We also provide a comprehensive maintenance and repair service. Based in Horsham, West Sussex we are known for our technical expertise, high standards of workmanship and excellent customer service. We preserve our great reputation by never subcontracting our work to others and we keep our installations to a geographical area that we know we can support with ongoing service.

What we do

  • Renewable energy

    • Air source heat pumps
    • Solar water heating
    • Solar panels
    • Home energy analysis
  • Electricians

    • Electrical testing services
    • Electrical installations
  • Smart Homes

  • Air conditioning contractors

  • More Services

    • tesla powerwall
    • energy storage
    • solar pv
    • energy batteries

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

5.0
134 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
7 panels and a 9.5KWHr GivEnergy battery
Customer Service
Quality
Value
WE chose Sussex Solar because they're a friendly local company and we were not disappointed with the equipment they have supplied and the installation job. The team were friendly, got on with the job (in all weathers) and took time out to explain what they were doing. The scaffolders were great too. We had an issue with the inverter unit post installation that was diagnosed and replaced by SS in conjunction with GivEnergy. We have now been running smoothly for over a month and are very satisfied with our choice of supplier and the job they did. Our thanks to the entire team.
Customer in West Sussex Posted on 17/03/2026 , work completed 16/01/2026
The trader replied (on 19/03/2026)
Thank you very much for your review and for your kind words about our team. We are glad you are happy with how your inverter issue was handled and it is our pleasure to have you as a customer.
Outstanding Service
Customer Service
Quality
Value
When we had a major issue with leakage of our solar panels, we were forced to look else where, as the original supplier of the system, no longer provided this service. It was a particularly tricky job, as the house, is a large Scandinavian ECO property. so lots of insulation and boarding of the loft area. Andy the Managing Director, came out immediately, looked at the issue, sent a drone up to check the panels on the roof, and then arrange for one of the engineers to attend, just a few days later. After various checks, they found the leak, and administered the repair. The system is an integral system, so not easy to deal with. What's more they found other small issues that we had not noticed, and sorted those. In addition, because of there expertise, they pointed out issues with our underfloor heating, that we are now getting done. Pleasant and very prompt efficient staff from the initial call, to the finished job. Brilliant service !!! Will potentially be looking at expanding our solar requirements. I did call another local company and was asked to email in my issue, which i promptly did. That was a week ago, still not heard back, i know which company i will be using for all our future requirement's
Customer in Posted on 12/02/2026 , work completed 11/02/2026
The trader replied (on 16/02/2026)
Thank you for your review. It was a pleasure to visit your property to diagnose and repair the problems your previous installer could not fix. We look forward to hearing from you when you are ready to expand your system, or if you encounter any further problems with your system in the meantime.
Solar Panels with Powerwall 3
Customer Service
Quality
Value
It has been couple of weeks since Sussex Solar finished the installation of our system and we are really pleased with the result. We chose Sussex Solar as they have been in the business a long time, were experienced and had an in house team and admin. We had a site survey, which lasted about 2 hours, where we were able to ask lots of questions and get an idea what system was best for us. No pressure, just honest advice. Once the DNO application was approved then we were scheduled in, with work starting in January. The weather was very wet, but the team were great. Friendly and conscientious and hard working. When they needed to come inside, it was shoes off every time. A nice thoughtful touch. Our roof is pretty old and fragile - the tiles were easily broken, but the team took great care and replaced all the tiles that gave up during install. It took time, but they made sure the job was done properly. Nothing was botched or hidden away. Again, once the scaffolding was removed they sent one of the scaffolding team to fix some tiles that were broken during the scaffolding process - again great care and attention. Once the system was installed the MD and advisor came round to check the system and give us an overview and advice on setup and tariffs etc. Now we now charging the battery overnight on the cheap rate and using this by day along with solar topping up it up and exporting excess - even during a wet, cloudy February... Great work Sussex Solar!
Customer in West Sussex Posted on 10/02/2026 , work completed 20/01/2026
The trader replied (on 12/02/2026)
We're so grateful for the time you have taken to write such a detailed review. Our prospective customers find this level of detail really helpful when choosing an installation company. We're also delighted that you are so pleased with everything and we look forward to looking after your system in the years to come.
Five Star Service
Customer Service
Quality
Value
After reading about Sussex Solar in the wonderful free distribution magazine 'All About Horsham', I had no hesitation in contacting them for a quote. Having solar panels for several years, it felt like time to acquire a battery to charge up from them to make our household energy use more efficient. The affable director, Andy, visited promptly, and I was soon sent competitive quotes matching my requirements. As soon as I accepted the one that suited me best, Sussex Solar swung into action, approaching the relevant authorities to get the necessary permission. This took a few weeks, but soon enough I was given an installation date on which Wesley and Fin turned up, working quietly and efficiently throughout the day to install my brand new battery. Immediately up and running (silently), I am delighted and have no complaints. Andy has recently returned to check that all is in order and give me final instructions on how to monitor the battery's activity using the free app I'd been shown how to download onto my smart phone. Fantastic! I would recommend Sussex Solar to anybody.
Customer in West Sussex Posted on 28/01/2026 , work completed 19/01/2026
The trader replied (on 30/01/2026)
Thank you very much for your detailed review. We return to all our installations for a handover once completed so we can explain the system, carry out quality checks and discuss the best ways to use the system to save money with your energy supplier. We are delighted you are so happy with everything and we look forward to supporting your system going forward.
Solar Panels & Powerwall 3
Customer Service
Quality
Value
I chose Sussex Solar after getting a selection of quotes & deciding that they looked the best from both reading previous reviews & the fact that they were local. Their proposal (15 solar panels & a Powerwall3) was very detailed both in terms of what would be installed as well as the projected performance of the system & I was happy to proceed. The installation team did a great job in really horribly wet weather over a couple of days in early January & installed all the equipment where I wanted including suggesting a location for the earth rod that didn't affect my recently installed patio. The system looks very neat both in & outside & is performing well so far. In fact it managed to produce 7.8kWh the other day which I thought was pretty good for the third week of January in the UK !
Customer in West Sussex Posted on 26/01/2026 , work completed 06/01/2026
The trader replied (on 27/01/2026)
Thank you very much for your review and great news that you are generating well, even in this gloomy, wet January. You're right, our poor installation team has experienced some pretty awful weather recently, but they are a very resilient bunch and still deliver high quality installations with a smile :-)
Solar Panels and Battery
Customer Service
Quality
Value
Sussex Solar recently fitted Solar Panels and a Tesla battery, they were great at explaining the process, what would happen and when. The actual work was done quickly and tidily the guys were great at keeping disruption to a minimum. Even in poor weather we are now generating some electricity and because of the battery we won't be (much) affected by power cuts. They really knew what they were doing and told us the truth, beware, there are companies out there who do not!
Customer in Posted on 22/01/2026 , work completed 15/01/2026
The trader replied (on 23/01/2026)
Many thanks for your review. That's great to hear that you are generating electricity and no longer so prone to power cuts. As you noticed, we try our best to foster open and honest relationships with our customers through frank and factual dialogue.
Ground mounted solar panels
Customer Service
Quality
Value
Great installation team and kept up to date throughout the process. I'm really happy with my new ground mounted solar panels.
Customer in Surrey Posted on 21/01/2026 , work completed 09/01/2026
The trader replied (on 22/01/2026)
Thank you for your review. Your ground-mounted panels on sleepers look lovely and we are delighted you are so happy with them.
Solar Panels and Air Source Heat Pump in old house
Customer Service
Quality
Value
Sussex Solar did a fantastic job specifying and installing solar panels and an air source heat pump (to replace our existing gas boiler), that met the requirements of our old house and our budget. From the initial survey, to the end of the installation the Sussex Solar team were friendly, positive, well informed and diligent. The workmanship (plumbing and electrical) was of very high quality and carried out neatly and precisely. It was a pleasure to have the team working at our house, they brought great energy and had a considerate, thorough and careful approach to their work. The results have been excellent. The system has now been in place for 11 months and has worked brilliantly. The house feels warmer than when we used a traditional gas boiler, our bills are lower and we are using only renewable electricity. We live in a late victorian house with modern radiators and an unusually sized hot water tank due to space limitations. A few firms looked at our situation and told us that an air source system was unlikely to be practicable, requiring a large air source unit and substantial new plumbing. However, Sussex Solar were able to specify a modern air source heat pump (the Vaillant AeroTherm plus with R290 refrigerant) that works with our existing radiators and hot water tank to provide efficient heating and hot water without extensive and costly re-plumbing. We couldn’t be happier with the solution Sussex Solar have installed for us and how well it has worked.
Customer in West Sussex Posted on 15/01/2026 , work completed 01/03/2025
The trader replied (on 22/01/2026)
Thank you for taking the time to write such a detailed review and for your kind comments about our high standard of workmanship. It is particularly rewarding to hear how well your solar panels and heat pump are performing 11 months after your installation. It was a pleasure working for you.
Highly recommended
Customer Service
Quality
Value
There’s a reason why you choose a family run business and this is one that delivers. Professional people doing a professional job. I can’t fault the team through the whole process from the initial phone contact with Charelle to the site survey and the completion of the works they definitely exceeded by expectations. From the staff in the office to the lads on the site every aspect was carried out with care and a level of professionalism that is rare these days. I cannot recommend highly enough.
Customer in West Sussex Posted on 13/01/2026 , work completed 19/12/2025
The trader replied (on 22/01/2026)
Thank you for your kind words and for recognising the professionalism of our team. We are very lucky to have a wonderful, committed group of people working for us and they are instrumental to our success and our 20 year history.
Excellent throughout
Customer Service
Quality
Value
The whole team at Sussex Solar has been excellent throughout. From our initial enquiry through to completing the installation of a heat pump in our 1970s 4 bed house, we could not fault the customer service. We were replacing our life-expired oil boiler system under the government Boiler Upgrade Scheme. We wanted to use a reputable local supplier with the expertise to specify reliable equipment that would integrate with our existing pressurised hot water cylinder. We felt confident that they understood our requirements and would only recommend a product if it was right for our situation. The installation work was undertaken with minimal disruption to us, by a highly professional, hard working team, and completed to a meticulous standard. Communication with us prior, during and after installation has been superb. The system was finished just before Christmas. We were apprehensive knowing that we would have a house full of people as the weather finally decided it was winter. However, the heat pump quietly ticked over, meeting all of our heating and hot water needs, and not a drop of oil was burnt to achieve it. We would thoroughly recommend Sussex Solar if you are considering upgrading to an air source heat pump.
Customer in West Sussex Posted on 05/01/2026 , work completed 12/12/2025
The trader replied (on 06/01/2026)
Many thanks for your detailed review and your kind comments about our team's workmanship and professionalism. Having a new heating technology installed just before Christmas is a real leap of faith and we are delighted your new heat pump has met all your expectations. Thank you for choosing us for your installation and we look forward to supporting your system going forward.