Grant Store Ltd (GSL) - Solar & ASHP Installer Reviews 

1.228
•
TrustScore 4.5 uit 5

4,7

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Beoordeeld met 5 van de 5 sterren

From initial enquiry to full completion, this company is brilliant. They were helpful, explained everything in simple terms that even I could understand! Jamie and Josh were efficient hard-working po... Toon meer

Beoordeeld met 5 van de 5 sterren

I had Grant Store install an air source heat pump, solar panels and batteries (call me Greta) earlier this year. Grant Store made multiple amendments to the quotes and were able to offer adv... Toon meer

Beoordeeld met 5 van de 5 sterren

This is my second review for Grant Store as they organised the installation of our solar panel and battery system earlier this year. We were so happy with this that were returned for installation... Toon meer

Bedrijf heeft geantwoord

Beoordeeld met 5 van de 5 sterren

Seamless process from start to finish, all contractors & office staff polite, efficient & professional. Cost exactly as quoted. Fitters Jamie, Josh & Leon did a first class job & took us through the a... Toon meer

Bedrijf heeft geantwoord

Bedrijfsgegevens

  1. Zonne-energie aannemer
  2. ook in
  3. Elektrotechnisch installatiebedrijf
  4. Ketel- en verwarmingsdienst
  5. Leverancier van apparatuur voor zonne-energie

Over Grant Store Ltd (GSL) - Solar & ASHP Installer

Geschreven door het bedrijf

Grant Store Ltd (GSL) is a Trustmark-registered energy efficiency provider, specialising in renewable energy solutions across the UK. Since 2017, we have helped homeowners, businesses, and social housing providers reduce energy costs and carbon footprints through high-quality, tailored installations.

Our Services

  • Solar PV & Battery Storage – Harness solar energy for long-term savings.
  • Air Source Heat Pumps – Reduce heating costs with renewable technology.
  • Insulation & Heating – Improve efficiency with loft, solid wall, and room in roof insulation.

With over 100 skilled professionals, we manage projects from consultation to installation, ensuring compliance and excellence at every stage.

Get Solar PV

Get an ASHP


Contactgegevens

4,7

Uitstekend

TrustScore 4.5 uit 5

1K reviews

5 sterren
4 sterren
3 sterren
2 sterren
1 ster

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4,7

Alle reviews

(1.228)

114 reviews in de afgelopen 12 maanden

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Beoordeeld met 5 van de 5 sterren

Review for Daniel – Radiator Leak Repair

Daniel visited today to fix a radiator leak and delivered excellent service from start to finish. He took the time to make sure everything was working perfectly before leaving and genuinely felt like he had ticked every box. This was a courtesy goodwill call‑out that the team didn’t have to attend, so I’m especially appreciative of the outstanding customer service. Thank you for going above and beyond.

11 juni 2026
Review zonder uitnodiging
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Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your lovely feedback. We're pleased to hear Daniel provided such excellent service and went the extra mile to ensure everything was resolved. We'll be sure to pass your comments on to him.

Beoordeeld met 5 van de 5 sterren

If it’s solar these are the go-to guys

If it’s anything solar these are the ‘ go to ‘ guys nothing was too much. from the original contact to ronnie the surveyor to the installers the office staff and the accounts department they are all superb the install went without a hitch scaffolding was put up Friday the install was done Tuesday the install was done before 1pm that’s 16 panels an inverter and a battery

The one thing I did notice that grant store actually care they actually want to help you get your system installed. The big box companies like edf ,boxt, octopus all give quotes that are drastically more for less kit ie smaller batteries and less panels and then don’t even call you back

My system has been installed 3 weeks now and it’s amazing how much extra I am generating

You don’t have to look any further

Thanks for all your help guys

19 mei 2026
Review zonder uitnodiging
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Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you so much for taking the time to leave such a detailed review.

We're delighted to hear that you had a positive experience from your first inquiry right through to installation and aftercare. We'll be sure to pass your kind words on to Ronnie, our installation team, office staff, and accounts department – they'll be thrilled to know their hard work made such a difference.

Thank you for trusting Grant Store with your solar project and for recommending us to others. If you ever have any questions about your system in the future, we're always here to help.

Beoordeeld met 5 van de 5 sterren

Easy to deal with

Easy to deal with. Everything was explained in detail and any questions were answered fully. I would recommend the Grant Store@

17 april 2026
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Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for taking the time to leave us a review. We're delighted to hear that you found the process easy and that our team was able to answer all your questions clearly and thoroughly. Your recommendation means a great deal to us, and we truly appreciate your support. If we can assist you again in the future, we'll be happy to help.

Beoordeeld met 5 van de 5 sterren
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your review. We're glad you found the process simple. We appreciate your support and thank you for choosing Grant Store.

Beoordeeld met 4 van de 5 sterren

Professional Team, Quality Work & Bespoke Solution which caused Logistical Delays - Highly Recommend

Overall, we are very happy with the final solar installation from Grant Solar. The team were professional, courteous and accommodating throughout, particularly Martyn (Electrical Engineer) and David the surveyor.

We had several bespoke requirements including underground routing of the armoured cables into the garage instead of external trunking, plus specific positioning of the inverter and battery system to maximise garage space. The team listened carefully and delivered exactly what we requested.

The installation quality itself was very good and the final system looks clean and professional both internally and externally. David also returned after installation to inspect and verify the works, which was appreciated.

The reason for 4 rather than 5 stars was mainly due to project delays and coordination issues. The installation was delayed by around two weeks because of a lost/delayed armoured cable delivery, and there was also an issue where the Tigo optimisers had initially not been installed, requiring panels to be removed and reinstalled which added further delay. Communication regarding programme dates and scaffold removal could also have been clearer at times.

There was also some minor surface damage around the garage cable penetrations and a few finishing details identified during inspection, although these were relatively small compared to the overall job.

Despite the delays, the installers themselves were excellent and the final outcome met our expectations. I would still recommend Grant Solar overall.

2 maart 2026
Review zonder uitnodiging
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Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your detailed feedback and for choosing Grant Store.

We’re very pleased to hear you are happy with the final installation and that Martyn, David, and the team delivered a professional service tailored to your requirements.

We also appreciate your patience regarding the delays and communication issues experienced during the project. Your feedback is valued and helps us continue improving our service.

Thank you again for your recommendation.

– Grant Store

Beoordeeld met 5 van de 5 sterren
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your feedback.

We’re delighted to hear everything was fitted with no fuss—that’s exactly the smooth, hassle-free experience we aim to provide. We appreciate you choosing us and taking the time to share your review.

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Seamless process from start to finish

Seamless process from start to finish, all contractors & office staff polite, efficient & professional. Cost exactly as quoted. Fitters Jamie, Josh & Leon did a first class job & took us through the app. Delay in feedback due to delay in remedial work but wouldn’t take this away from overall review

23 februari 2026
Review zonder uitnodiging
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Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your great feedback.

We’re really pleased to hear you found the process seamless and that our team was polite, efficient, and professional throughout. It’s also great to know Jamie, Josh, and Leon did a first-class job and supported you with the app.

We appreciate your understanding regarding the delay with the remedial work and your overall positive rating. Thanks again for choosing us and for taking the time to leave a review.

Sarah ~ GSL Aftercare Team

Beoordeeld met 1 van de 5 sterren

Awful experience, do not use them

Awful experience. They installed solar panels and an air source heat pump. They rushed the job, cutting corners and requiring multiple visits to correct poor workmanship. No care was taken during the installation and they left a trail of destruction behind them. It has been a really stressful experience having had them install these items. I am still having to sort issues out following their work and revisits to try and resolve the problems.

30 mei 2025
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for taking the time to share your feedback.

We are very sorry to hear about the experience you’ve described with your solar panel and air source heat pump installation. This is not the standard of workmanship or customer care we aim to deliver, and we understand how frustrating and stressful it must be to deal with repeated visits and ongoing issues.

We would like the opportunity to investigate this properly and support you in resolving the outstanding issues. To do so, we will need some identifying details relating to your project so we can locate your case and review the installation history.

Please could you email us directly at info@grant-store.com with your details and a summary of the issues you’re experiencing? Once received, we will look into this as a priority.

Thank you again for bringing this to our attention, and we hope to have the opportunity to put things right.

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Solar installation went ahead as…

Solar installation went ahead as planned. All workmen were courteous and efficient. When a problem was encountered it was resolved in good time through the office admin and the workers.

24 april 2026
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for taking the time to leave your review.

We’re really pleased to hear that your solar installation went ahead as planned and that you found our team courteous and efficient throughout the process. It’s also great to know that when an issue arose, our office and site teams were able to resolve it promptly for you.

We always aim to deliver a smooth experience from start to finish, so your feedback is genuinely appreciated and will be shared with the wider team.

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

workers are efficient

workers are efficient, installation on time.

23 april 2026
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your feedback.

We’re pleased to hear that the installation was completed on time and that you found our team efficient throughout the process.

Delivering a smooth and timely service is very important to us, and it’s great to know this was reflected in your experience.

We really appreciate you taking the time to share your comments and thank you again for choosing us.

Sarah ~ GSL Aftercare Team

Beoordeeld met 4 van de 5 sterren

Grant solar, a reliable company

I was really happy with the whole process. The company was very helpful to deal with and happy to answer any questions I had, and to accommodate my specific requirements. Any issues that arose were dealt with to my satisfaction. The solar panels look great too!

20 april 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thanks so much for your kind review—we really appreciate it! It’s great to hear you were happy with the whole process and found the team helpful and easy to deal with.

We’re especially glad we could answer your questions and accommodate what you needed, and that any issues were sorted to your satisfaction—that’s exactly what we aim for. And it’s a bonus that you’re pleased with how the panels look too!

Thanks again for choosing Grant Store Solar. If you ever need anything down the line, just give us a shout 😊

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Jamie and Josh were a delight

Jamie and Josh were a delight to have doing the installation. Very patient with us taking some time to understand the app. Can't take my eyes off it now and very annoyed with the clouds...

17 april 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thanks so much for the lovely feedback! We’re delighted to hear that Jamie and Josh made the installation such a positive experience and took the time to help you get comfortable with the app. We’ll be sure to pass your kind words on to them.

Great to hear you’re enjoying it so much already—happy viewing!

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Air Source Heat pump Installation

I had Grant solar install an Air Source Heat Pump back in January. I’m really happy with the outcome the guys came up to Cumbria and installed the system with precision, efficiency and little to no mess. Chris the installation manager was brilliant, he kept us up to date with any issues and gave us great advice and solutions. since having the heat pump installed it has transformed our home into a lovely warm home and has knocked £100’s off our bills. We did have an issue with the hot water but I contacted the team and they were very quick to identify the issue and send some to resolve it. A special mention to John who came and inspected our system after installation. He talked through how to use the system and how to set it up to suit us. He showcased great knowledge and confidence in what he was doing. He also did a great job fixing our hot water system. In January, I had Grant Solar install an Air Source Heat Pump. I’m delighted with the result. The team arrived in Cumbria, installed the system with precision efficiency and minimal disruption. Chris, the installation manager, was fantastic. He kept us informed about any issues and offered excellent advice and solutions. Since installation, our home has transformed into a cosy warm haven and our bills have dropped by hundreds. We did encounter a hot water issue but the team quickly identified and resolved it. A special shout-out to John, who inspected our system after installation. He expertly demonstrated how to use and configure the system to suit our needs. His knowledge and confidence were evident. He also expertly fixed our hot water system.

19 januari 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your great feedback.

We’re really pleased to hear your Air Source Heat Pump installation went smoothly and has made such a positive difference to your home comfort and energy bills. It’s great to know Chris kept you well informed throughout and that John was able to support you after installation and resolve the hot water issue.

We appreciate you taking the time to share your experience, and we’re always here if you need any further support.

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Excellent service

From Ben and team in sales to Martyn’s team of installers and electricians it was an excellent service. All courteous and approachable. Big thanks to Aidan for his patience and support with the App. Would highly recommend.

7 april 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you so much for your wonderful review—it really means a lot to us.

We’re delighted to hear that you had such a positive experience with both our sales team and Martyn’s installers and electricians. It’s great to know that everyone came across as courteous and approachable, as that’s exactly the standard we strive for.

Your recommendation is truly appreciated, and we’re grateful you chose us. If you ever need anything further, we’re always here to help.

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Very impressed!!

From start to finish the process of fitting my solar panels, inverter and battery was supported by Grant Stores Limited. The survey was quick and easy. The installation was completed in one day by competent and friendly staff and today I was visited by a representative to conduct the final audit of the system. I am now producing clean electricity and charging the battery, I should done this years ago!!
I would recommend Grant Stores Limited to fit your solar panels

2 april 2026
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you very much for your fantastic review and for sharing your experience with us!

We’re delighted to hear that everything—from the initial survey through to installation and final audit—went smoothly and efficiently. It’s great to know our team made the process quick, easy, and professional, and that the installation was completed in just one day by our friendly and competent staff.

Most importantly, we’re thrilled that you’re now generating clean electricity and making the most of your battery system—welcome to the world of renewable energy! It’s always rewarding to hear customers say they wish they’d made the switch sooner.

Your recommendation means a great deal to us, and we truly appreciate your trust in Grant Store Limited.

If you ever have any questions or need further support, please don’t hesitate to get in touch.

Sarah ~ GSL Aftercare Team

Beoordeeld met 4 van de 5 sterren

I had problems with the Foxcloud app

I had problems with the Foxcloud app, when it was upgraded without warning the reading on the app disappeared. I tried contacting Foxcloud via email but all I got is a Key number, several in fact and in reply to my message to them I got a reply in Spanish which was useless. Having contacted Grant Store I won't mention his name but he sent me an email with an attachment to watch a video and follow the instructions to get the app working properly. That failed. The next day I telephoned again and this time I got through to a lovely lady Katie Chee? She was so helpful, see talked me through the video again and the ask my to WhatsApp screenshots of what was happening, after several screenshots she said she would get back to me soon and she did, there was obviously an issue that needed someone to come out and fix. A week later three young men turned up and after the main Man scratching his head for a few minutes he found out that my address had disappeared on there list, so he promptly created the address again and it's working fine. A big faff but thanks to Katie and the rest of the team its sorted.

7 maart 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you so much for taking the time to share your detailed feedback with us. We truly appreciate your patience and understanding throughout what sounds like a frustrating experience with the Foxcloud app upgrade.

We’re sorry to hear about the initial difficulties you faced, particularly with the lack of clear communication and the challenges in getting support through Foxcloud directly. We understand how inconvenient it must have been to lose access to your readings and not receive helpful responses.

That said, we’re very pleased to hear that your experience improved when you reached out to our team. It’s wonderful to know that Katie was able to support you so effectively—taking the time to guide you through the process, review your screenshots, and ensure the issue was followed up properly. We’ll be sure to pass on your kind words to her, as well as to the engineers who visited and resolved the issue on-site.

While we regret that it took a bit of a “faff” to get everything sorted, we’re delighted that your system is now working as it should. Your feedback is invaluable and helps us continue improving both our service and communication.

Sarah ~ GSL Aftercare Team

Beoordeeld met 4 van de 5 sterren

Staff are genuinely nice & helpful

Staff are genuinely nice & helpful. Easy to talk to & good, fast response to queries or issues. Want to specially mentioned Jamie the electrician, Ben Tucker in the office. Very helpful & patience to us, 2 pensioners with very little knowledge regarding solar energy

25 maart 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you so much for your kind and thoughtful review. We’re delighted to hear that you found our team friendly, approachable, and responsive to your queries.

A special thank you for mentioning Jamie and Ben—they will be very pleased to know their support made such a positive difference. We’re especially glad we could make the process clear and comfortable for you.

Your feedback truly means a lot to us.

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Easy to get hold of and nothing too…all contractors were clean and tidy can't fault

Easy to get hold of and talk to, nothing too much trouble. All contractors clean and tidy and turned up at time they said they would.
Would recommend highly as a company

24 maart 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your kind feedback! We’re so pleased to hear you found our team easy to reach and that our contractors were punctual, clean, and professional throughout.

Your recommendation means a lot to us—thank you for your support!

Sarah ~ GSL Aftercare Team

Beoordeeld met 4 van de 5 sterren

Well organised and inclusive…

Well organised and inclusive installation with constant communication throughout

13 maart 2026
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you for your wonderful feedback!

We’re really pleased to hear that you found the installation well organised and inclusive, and that our team maintained clear and consistent communication throughout. Providing a smooth, transparent experience is something we strive for, so it’s great to know this came across.

If you ever have any questions or need support in the future, please don’t hesitate to get in touch — we’re always here to help.

Sarah ~ GSL Aftercare Team

Beoordeeld met 5 van de 5 sterren

Installation was performed on time and…

Installation was performed on time and looks good. Jamie and Josh arrived at the specified time, were friendly, and explained clearly what was happening. Only difficulty was setting up the associted Foxcloud app, due to issues with the app server, not the installers.

16 maart 2026
Review zonder uitnodiging
Logo Grant Store Ltd (GSL) - Solar & ASHP Installer

Antwoord van Grant Store Ltd (GSL) - Solar & ASHP Installer

Thank you so much for taking the time to share your positive experience with us. We're delighted to hear that the installation was carried out on time and that everything is looking good.

It’s especially great to know that Jamie and Josh made a strong impression — arriving promptly, being friendly, and clearly explaining each step of the process. We’ll be sure to pass along your kind words to them.

We do appreciate your patience regarding the setup of the Foxcloud app. As you mentioned, this was due to server-side issues rather than the installation itself, but we understand how important a smooth setup is and are grateful for your understanding.

If you need any further assistance or have any questions moving forward, please don’t hesitate to reach out — we’re always here to help.

Sarah ~ GSL Aftercare Team

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