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Powervault Plus

Powervault Plus

3.2(33 reviews)See reviews ↓·London

About the company

Powervault Plus operates in the battery storage and home energy sector from London. Powervault has been delivering against its purpose for over ten years. It is a British business with UK-based customer services. The company has a nationwide network of approved installers, which is MCS-accredited. Powervault offers solar energy storage batteries and SMARTSTOR™ energy management software.

What customers say

Based on genuine customer reviews

Householders pairing a Powervault battery with solar generation describe a mixed picture of the hardware and the support around it. Several owners report the units performing strongly over years, with a P3 user noting steady operation and real savings once panels were added, while others value an app that shows daily generation, storage and discharge clearly.

Reviews regularly refer to responsive help with technical queries and remote health monitoring, including a failing cell spotted and replaced free of charge, and the installation handled with partner firm Orca for a 20kW battery on an Octopus tariff. A detail many reviews return to is the appeal of a UK manufacturing base and clear advice when charging schedules needed altering. Less favourable accounts focus on the grid CT fit not allowing for later solar, so the battery never charges from the panels, and on an unreliable portal with limited integration options.

Some describe repeated overheating shutdowns requiring resets, sluggish support replies, efficiency measured well below what was expected, and a six-day wait for an engineer after an installation fault. Uncertainty over warranty and monitoring following the change of ownership also features, with owners warning others about the lack of ongoing backing for their systems.

Energy equipment and solutionsSolar energy equipment supplier
Powervault Plus — Customer photo

Reviews

Reviews are taken from publicly available sources.

SB
Stephen Birch11 June 2026

I invested thousands into a P3 battery system in 2023 from Powervault Ltd. and it worked fine. The company unfortunately went into administration and Powervault Plus Ltd bought the business and assets. I received 3 days notice this week that they were no longer honouring the 10 year warranty but worse still, they were unilaterally going to decommission my system (shut it down) and leave me with an expensive asset that would no longer work. They have subsequently backtracked (clarified) that our P3 systems will still operate but we will have no visibility of its performance nor be able to programme the functions. We will not have any ability to do so as the software was in the cloud which they are still shutting down. They say that they are working on a "local control" which we may or may not get but in the meantime customers have no idea how useful or not their massive investments will be after tonight. I think this is appalling behaviour. If this successor company wants to built a reputation why could it not first develop the local control, test it and distribute before shutting down their support for what is a medium to long term investment. And/or, better still, offer to continue to provide the support (without the warranty) for a reasonable annual fee. My advise to potential customers of Powervault Plus Ltd is this " DO NOT TRUST THIS COMPANY, if they behave like this, they clearly do not care about their customers, they only care about themselves"

AM
Andrew Mellor11 June 2026

I purchased a Powervault 12kw system 4 years ago with 10years warranty UK company and 24/7 monitoring. Tuesday All Powervault customers received an email from Powervault + who have taken over the name after Powervault went into receivership. The letter basically advised they have no duty to honour warranty or support or monitoring. So we will turn off everyone’s Battery system in 3 days time as they won’t be safe to use without monitoring. But after you have binned your £7k system we would be happy to sell another Powervault + system 🤬 Really,Would you want to trust this company as we did. They didn’t even look at offering a monitoring system with a charge to cover costs to enable our systems to continue to work. I have Tesla installer calling Friday. Don’t risk your money like we did.

RB
Richard Bettany9 June 2026

I have had a Powervault system since 2021 and to be fair it has worked extremely well. Following the company going into administration, the new owners have today issued all users an email stating the all the units will be shutdown on Friday this week and that there will be no further warranty support or monitoring. This is absolutely disgraceful and I shall be seeking legal advice. In the meantime my advice is don’t even consider dealing with this disreputable company.

AP
Alex Parker29 October 2025

Arranged a teams meeting as an invitee to become an approved installer, nobody turned up citing the staff member’s sudden exit from the company, fair enough, stuff happens. I inquired about rearranging, Shane apologies and set up a second meeting yesterday, another no show! I sent him a message “twice our time ( 3 of my team on the call) has been wasted which is disappointing given the brand you represent” Nothing. Instead, he messaged my electrician NTP directly, missing me, company director, out completely, with excuses of absence via tooth ache. How unprofessional can a company get. We as a company wouldn’t touch them with barge pole having experience their behaviour and lack of professionalism which will be reflected in their client support-disingenuous and sloppy. My advice to users, customer support is key and there are great companies out there, this isn’t one of them.

AY
Antony Yu16 May 2025

I was happy with the Powervault unit until I got my solar panels installed. A complaint is being made to Powervault because their installation of the grid CT did not take into account a solar system being added later. My unit does not charge from the solar panels and Powervault has denied responsibility for the issue.

NT
Nicholas Taylor1 May 2025

We are very happy with our Powervault battery and wanted one which had UK manufacturing base. The process was informed and the team at Powervault and the installation company they used Orca did a great job. The 20KW battery has been working well now for some 14 weeks now we have gone onto a new tariff with Octopus which allows for cheap top up at night. The Powervault team monitor its health online and are occasionally recommending various actions which they undertake quickly and professionally. Would recommend Powervault and Orca (if you are in their area of operation)

HW
Howard Walker18 February 2025

Now had my Powervault P3 for a few years and it works fine. Since I added solar it's saving me a lot of cash. The company is always available to speak to and keeps an eye on my kit. After a set of power cuts they told me that a cell in my battery needed attention and a few days later they came and replaced it at no cost. How's that for great service. If I only Microsoft could do that for windows 11. I now only use my mobile phone for internet. Back to my Powervault . It's great. Buy one and you'll not regret it.

Battery storage & home energy in London compared

Ordered by rating, weighted by the number of reviews — businesses with only a handful of reviews do not jump to the top automatically. 8 businesses in this category in London are compared.

RankProviderRatingReviewsOpen Sat.
1Discover Solar Ltd★ 5,081Yes
2Solar Batteries UK★ 5,031No
3Excel Energy★ 5,021No
4British Solar Power★ 5,03Yes
5London Renewable Energy★ 4,610Yes
8Powervault Plus (this page)★ 3,233No
Contact
+442045387038www.powervault.co.uk6 Liddell Rd, London NW6 2ET
Working hours
Monday09:00–18:00
Tuesday09:00–18:00
Wednesday09:00–18:00
Thursday09:00–18:00
Friday09:00–18:00
SaturdayClosed
SundayClosed