Zest Energy Ltd Reviews 

232
TrustScore 4 uit 5

3,9

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Beoordeeld met 5 van de 5 sterren

I couldn't be happier with the whole experience from start to finish. The sales rep was brilliant – there were absolutely no pushy sales tactics, just honest advice and plenty of time to answer... Toon meer

Beoordeeld met 3 van de 5 sterren

A number of years ago we had this company do some work for us. We were quite satisfied at the time with what they actually did. Ever since, though, we have received frequent, unwanted calls trying to... Toon meer

Bedrijf heeft geantwoord

Beoordeeld met 1 van de 5 sterren

My father was provided with a highly misleading quote for a new battery to upgrade from 6kWh battery to a 9kWh and retaining his existing solar panels. The quote showed projected net savings over 20... Toon meer

Bedrijf heeft geantwoord

Beoordeeld met 5 van de 5 sterren

Initial contact was professional and friendly, The salesman’s advice given was to the point and informative, any questions was answered thoroughly. The best thing was for me he didn’t push anything.... Toon meer

Bedrijfsgegevens

  1. Zonne-energiebedrijf

Geschreven door het bedrijf

A Scottish based Solar PV installer with extensive experience in the industry offering you the latest in home efficiency devices and renewable technology. Our bespoke services allow us to design the perfect energy and heating solution for your home. The ZestEnergy team provide you with a tailored experience, depending on your needs, budget and ambition.


Contactgegevens

3,9

Goed

TrustScore 4 uit 5

232 reviews

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3,9

Alle reviews

(232)

101 reviews in de afgelopen 12 maanden

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Beoordeeld met 1 van de 5 sterren

Zest energy scam not as quoted

Zest energy scam

I Just want to get this review back out there to stop others getting scammed by zest energy please read.

I got a quote from zest energy for a 5KW solar system with battery storage for £13000 they gave me the itemised bill but with very little detail to what parts were being installed. They convinced me the system I was getting was good so I went and payed deposit and the installation commenced after they completed the installation I took pictures of all the part numbers from the boxes of equipment they had installed and did some research to find that the total cost of parts was around £6000 so basically was 7 grand to install the system. Then a month later I had someone else come look at my system who pointed out to me that they had in-fact installed a 3.6KW inverter not a 5KW inverter so I complained to zest energy who came back to me saying my inverter they installed is more than capable for the job . It mite be but it’s not what I was sold and they refused to install the correct inverter that I was quoted for. Anyway a few month after all of this I got contacted by zest energy asking would I be interested in an air source heat pump I said I would be and they sent out the same sales rep as before to do a quote for me .When he arrived I told him about what they installed on my solar system and he said he was angry because they installed the wrong inverter and it makes him look bad . He said he couldn’t believe they had done that to me and said he would be contacting the office to say this was not what he sold me . After this conversation he just wanted to get out the door and said that he will do everything he can to speak with his supervisors to get this fixed / replaced but obviously I heard nothing back.

Also one last thing I asked after my install how much I would be to get 1 more battery added to my system and I was quoted £4000. I looked up internet and these batteries would cost to me on most internet websites around £1100 and to trade company like zest energy I would presume a lot less so they are looking around £3000 to install 2 wires from the battery to inverter which I have looked in to are pretty much plug and play very simple electrical installation

please read this and trust me avoid avoid avoid zest energy

10 juni 2026
Review zonder uitnodiging
Logo Zest Energy Ltd

Antwoord van Zest Energy Ltd

Hi Kevin,

We note that this review appears to repeat concerns first raised in 2023 following your installation.

At the time, we thoroughly investigated the matters you raised regarding the specification and performance of your solar PV system. The inverter installed was selected as part of the system design and was fully compatible with the installed equipment and intended operation of the system. We did not find any evidence that the system had been mis-sold.

We also note that comparisons between retail component prices and the total contract value of a professionally installed renewable energy system do not reflect the full scope of works provided. Project costs include system design, installation labour, electrical testing and certification, scaffolding where required, commissioning, warranty support, insurance, administration, and ongoing customer support.

We appreciate that you remain dissatisfied with our conclusions. However, as this matter was reviewed extensively following your original complaint, our position remains unchanged.

Should you wish to discuss any current operational issues with your system, our customer support team remains available to assist.

Kind regards,
Zest Energy

Beoordeeld met 3 van de 5 sterren

Poor clean up.

It would have been nice if you had cleaned up better.
Running a vacume over the work areas would have been good.
It would help if the floor boards were replaced correctly my inicial thought it was a problem with the carpet but it turned out one of the floor boards was not put back correctly. Luckly i have the skills to correct the problem.

1 juni 2026
Logo Zest Energy Ltd

Antwoord van Zest Energy Ltd

Hi Keith,

Thank you for updating your review and for taking the time to provide additional feedback.
We're sorry to hear about the issues you experienced with the clean-up and the floorboard reinstatement. We'd like to investigate this further with the installation team and review what happened.

Unfortunately, we're unable to identify your installation from your review. Please could you contact us directly with your address, postcode, or installation reference so that we can look into this properly and discuss the matter with you?

We look forward to hearing from you.

Kind regards,

The Zest Energy Team

Beoordeeld met 3 van de 5 sterren

Did the fitting well but left a lot of…

Did the fitting well but left a lot of rubbish and old equipment behind.

29 mei 2026
Logo Zest Energy Ltd

Antwoord van Zest Energy Ltd

Hi Aulay,

Thank you for taking the time to leave a review.

We're pleased to hear that you were happy with the quality of the installation, but we're disappointed to learn that rubbish and old equipment were left behind following the work.

This is not the standard we expect from our installation teams, and we'd like to investigate what happened. Unfortunately, we're unable to identify your installation from your review alone, so please contact us directly with your address, postcode, or installation reference and we'll look into this for you.

We appreciate your feedback and look forward to resolving this matter.

Kind regards,
The Zest Energy Team

Beoordeeld met 1 van de 5 sterren

My problem is there after sales service…

My problem is there after sales service I am happy with my panels but the after sales service is terrible. I have phoned numerous time asking for help with my solar app problem, was told to watch a YouTube video which I did but did not solve the problem, I have asked to speak with there technical team but always an excuse -they are really busy or one team is off sick. I am still waiting for a call now in the fourth week of the problem.I am still phoning but just goes to answering machine I have left my contact details 🤞they have the time to reply to me.

22 mei 2026
Review zonder uitnodiging
Logo Zest Energy Ltd

Antwoord van Zest Energy Ltd

Hi Mary,

Thank you for your feedback.

Having now identified your account and reviewed the history with our office, we can confirm that the issue relates to reconnecting your monitoring system following a change of internet router, rather than a fault with your solar installation itself.

Our team has provided printed instructions, step-by-step guidance, and links to video tutorials explaining how to pair the inverter to the new router. Archie has also been assisting you directly regarding this matter. We have additionally advised that we are happy to assist further in person when an engineer is next working in your area.

It is also worth noting that your system is now over five years old. Zest Energy did not originally install the solar system itself — we later retrofitted and upgraded the inverter in November 2021, and the system is currently operating correctly.

While we appreciate that app connectivity issues can be frustrating, we do feel reasonable after-sales support and guidance has been provided throughout.

Zest Energy

Beoordeeld met 5 van de 5 sterren

Efficient and quick installation

The solar battery installer arrived around lunchtime and worked steadily til the job was finished mid affternoon. He was polite and efficient and left everywhere he worked very tidy

13 mei 2026
Beoordeeld met 1 van de 5 sterren

The new battery was fitted on Wednesday…

The new battery was fitted on Wednesday 22 April. There was a faulty component, I was told the replacement would be fitted on the Thursday or Friday. The last I heard was the component was out of stock.

30 april 2026
Logo Zest Energy Ltd

Antwoord van Zest Energy Ltd

Hi Alistair,

Thank you for your feedback, and I’m sorry for the delay in resolving this.

You’re right that following the battery installation on 22 April, a fault was identified with the RS485 communications module. We had expected this to be replaced within a few days, however there has been a delay due to stock availability.

I understand you’ve been in touch with the team—unfortunately today being a bank holiday has limited our ability to progress this immediately, but this will be picked up as a priority as soon as normal service resumes.

It’s also worth noting that the system is currently showing as operating normally in the app. The RS485 module relates specifically to communication with the AC power sensor, so while the system can still run, this component is required to ensure full monitoring accuracy.

We will be in contact shortly with a confirmed update and next steps.

Thank you for your patience while we work to resolve this.

Zest Energy

Beoordeeld met 3 van de 5 sterren

Not too bad in the end!

the new kit was put in a position so that we cant open the freezer properly, stuff was taken off the walls without asking us and a lot of rubbish was left behind. We were told that someone would come fix things this week but so far all we have had is one contact saying they were trying to find someone. Also we were promised that someone would come to help us change supplier so far that hasn't happened either. However they turned up and made the changes needed pretty quickly so we feel a bit better about them now.

1 april 2026

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