Welcome to Onyx Power Group.
Generators: Sale, Service & Repairs
LEADING THE WAY IN COMMERCIAL AND RESIDENTIAL TEMPORARY POWER INSTALLATION & SERVICING
Onyx Power Group are a business specialising in commercial and residential back up and temporary power solutions. Onyx has built an excellent global reputation,matched with over 40 years of extensive industry knowledge and experience. Onyx Power Group provides market-leading installation, servicing and repair for all types of temporary power units, including generators, inverters, battery storage systems, off grid ATS panels (Automatic Transfer Switching) and much more.

With unparalleled expertise in the temporary power industry, Onyx is always available to offer advice on even the most specialised requirements, regardless of their scale.

Onyx Power Group prides itself on delivering quality service consistently, from generator overhauls and forklift truck servicing to on-board power system installations. View some of our dedicated services, below.
NEW & USED GENERATORS FOR SALE. CONTACT ONYX TODAY!

Trusted and reliable - Onyx Power are leading suppliers of new and used generators!


Discover reliable power solutions with Onyx Power Services, your trusted nationwide supplier of high-quality new and used generators. We are proud to offer a wide selection of generators in both 3-phase and single-phase options from leading manufacturers, including FG Wilson, Genmac & Pramac. With competitive pricing, expert advice, and dependable delivery, Onyx Power Services is committed to helping provide power with ease and confidence. Browse our selection of in-stock and ready for dispatch generators today and invest in cost-effective, reliable power solutions that keep you going, wherever you are.

At Onyx Power, we ensure all of our generators are thoroughly inspected prior to dispatch, providing you with peace of mind and a smooth purchasing experience. We are always on hand to guide you through our extensive inventory, helping you find the perfect generator for your specific requirements. Call 07788 154382 today to learn more about our available stock and how we can assist you in finding the ideal power solution.
Our services include the following:
Loler / Thorough Examinations
Independent Power for Swimming Pools & Saunas
A turn key service that provides independent power through generator to inverter battery storage. This increasingly popular off grid solution dramatically reduces expensive running costs of commercial and residential swimming pools and saunas.
Mobile generator repairs and servicing
Marine Power
Specilalists in installation, servicing,commissioning and repairs of all types of marine power equipment including auxiliary engines and lifting equipment.
Commercial on-board power system installation
Parts Department
Our dedicated parts department includes everything needed to repair and service all types of temporary power equipment, including all makes of generator parts, servicing kits, control panels, battery chargers and much more.
Welfare unit repairs and servicing
Welfare Unit Repairs and Servicing Dedicated Workshop Facility
Our dedicated workshop facility has everything needed tobuild, repair and service all types of temporary power units and accessories.

Onyx continues to invest in market-leading diagnostic equipment to facilitate the needs of its customers.
Loler / Thorough Examinations
LOLER, PUWER & LEEA Thorough Examinations
All types of plant equipment that require certified examinations, including hiab, platforms, tail lifts, forklift trucks & all other lifting equipment.
Mobile generator repairs and servicing
Mobile Generator Repairs and Servicing
Onyx have market leading CAT, Perkins and DSE diagnostics equipment and software to perform state of the art testing. We carry out repairs and servicing to all makes, models and kVA sizes of generators, as well as providing load bank testing and temporary generator supply if required.
Commercial on-board power system installation
Commercial On-board Power System Installation
Installations for commercial vehicles, capable of providing 12v, 24v and 240v with a 110 transformer compliant with on-site use. Two, three & four battery system availability. Designed to provide power without the vehicle running. Ideal for mobile breakdown services, camper vans, marine & much more.
Welfare unit repairs and servicing
Welfare Unit Repairs and Servicing
Onyx Power Services are highly experienced in electrical testing, PAT testing, servicing and repairing all types of welfare units and portable cabins with built in generators. If you have a requirement for this type of mobile service, please get in touch.
Recent work
Curious enough to take it apart, skilled enough to put it back together.
Reviews
Working with Onyx makes my working day much easier, as soon as I make that call I have confidence in their reliability, service and price. Nothing is too much trouble, more often than not they make suggestions to rectify problems that will reduce both downtime and costs. The range of services is vast, their knowledge is vast and quite frankly I would struggle to operate my business without their support. I have no hesitation in recommending Onyx not as a service provider but as a partner.
Danny Nolan, KE KENT
Onyx does the testing of all of our spider cranes and lifting equipment, and we have used them for the past few years. They provide a very prompt and professional service. They're attitude is very pro-active and we have always found their advice extremely helpful. We certainly wouldn't go anywhere else.
Clint Price, Cobra Steel
Chris at Onyx serviced our entire fleet of forklift trucks and provided Loler Certificates. He was prompt and the price was very competitive. Thanks Onyx! We’ll be needing you again in 6 months!
Anne, Brighton
I needed my 2019 VW Transporter converted, with onboard power installed. Chris and his mobile service did a great job. Really quick and efficient. The price was good too! Cheers
Ryan, Writtle
Chris plugged in his amazing diagnostics equipment into our faulty generator. Onyx fixed the problem very quickly. I’d recommend Chris and would definitely use his services again.
Ewan, Guildford
As a new company, we have been using Chris at Onyx since we started in 2020. I can honestly say that in that time, he has been absolutely fantastic and helped us with a number of different problems including repairs, servicing & emergency call outs. He always goes above and beyond and has always been happy to give his time to talk us through issues over the phone. Genuinely one of the nicest blokes you could hope to meet.
Craig & Dan @ BrenCap Solutions
We have two towable welfare units, one of which we were told was redundant and it needed a new generator. Chris, after looking at the unit, was able to get it up and running and has been since. This saved our company a lot of money and enabled us to use an existing unit opposed to hiring one. We would highly recommend Onyx Power Services and will be looking to put all our work his way.
Jon Marmo, Contract manager
Smith & O'Sullivan ltd
For more information on Onyx Power Group, don’t hesitate to get in touch
Rothwell Close, Leigh-on-Sea, SS9 4SN
info@onyxpowerservices.co.uk
07788 154382
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