Turn a surplus generator into an opportunity.
If your backup set is no longer needed, your premises have changed or you are upgrading your power supply, send us the details. You do not need a complete technical specification to start a conversation.
Have a diesel generator you no longer need? FW Power buys used generators directly for stock, from individual standby sets to surplus fleets and redundant site installations.
Generator owners · Demolition · Facilities management · Construction

Whether you own one diesel generator or manage assets across several sites, we can discuss a purchase around your equipment and project requirements.
If your backup set is no longer needed, your premises have changed or you are upgrading your power supply, send us the details. You do not need a complete technical specification to start a conversation.
Bring us into the discussion while the set is still accessible. Share your demolition programme, plant-room location, isolation status and lifting constraints so the equipment and removal requirements can be assessed together.
Offer generators from office buildings, hospitals, retail sites, warehouses and managed estates. Include asset records, service history, client authorisation and any shutdown or continuity requirements.
We welcome surplus site generators, mobile diesel sets and units displaced by a permanent electricity connection. Let us know about the project handover date, site access and when the generator can leave.
Offer ex-hire generators, trade equipment or surplus stock in one enquiry. A unit-by-unit list with model, year, hours, condition and location helps us review mixed fleets efficiently.
For data centre upgrades, factory closures, utility projects and redundant STOR installations, tell us about each generating set and the associated controls, switchgear and fuel system. Share the removal programme as early as possible.
Share your generator details, photographs, location and sale or part-exchange preference.
We assess the opportunity, ask for any missing information and arrange an inspection where needed.
Confirm the equipment included, price, paperwork, payment arrangements and removal responsibilities.
Coordinate the agreed payment and collection with your team and the site programme.
We consider mainstream generator brands and engine specifications. The badge on the enclosure may differ from the engine manufacturer, so include both where you can.
From a used CAT or Cummins standby generator to an FG Wilson set powered by Perkins, an Atlas Copco site machine or a Bruno or Pramac generator, send the exact model for assessment. Older Dorman and Lister Petter sets are welcome for review too.
Brand names help identify the equipment. Purchase depends on the individual generator, condition and suitability. If your make is not listed, you can still enquire.
Tell us your make and modelWe assess generators by their specification and condition. Tell us how yours has been used and whether it is still connected, stored, ready to load or part of a wider installation.
Low-use emergency sets from commercial buildings, healthcare, farms, offices and industrial premises.
Diesel sets used for construction, temporary power, rental fleets and off-grid operations.
Open skid-mounted machines, canopied generators and larger container installations.
Individual assets or groups of generators with details of any controls, tanks and switchgear offered with them.
Have a non-running generator or an older unit? Describe the faults and what is missing. We can review the details before confirming whether it is suitable for purchase.
A redundant generator can still be valuable, but access and disconnection often determine how a sale needs to work. We can discuss decommissioning, lifting and collection alongside the equipment assessment.
Tell us about plant-room doors, basement or rooftop positions, vehicle access, ground conditions, cranes, fuel tanks, exhaust routes and any restricted working hours. If the set is still supporting a building, include the proposed shutdown or replacement date.
We agree the removal scope, responsibilities, timing and any costs for your site. Do not assume electrical disconnection, fuel work or cranage is included until this has been confirmed.
Discuss your site and generatorTwo generators with the same kVA rating can have very different values. A useful assessment looks at the complete machine and the work required to take ownership and remove it.
Generator and engine make, model, prime and standby ratings, voltage, phase and frequency.
Starting and running condition, corrosion, leaks, damage, missing parts and what is included.
Displayed operating hours, available ECU records, service history and previous test information.
The transport distance, lifting access, disconnection requirements and site constraints.
Service records, previous use and known repairs help us understand the equipment. If the controller has been replaced or the displayed hours are uncertain, say so. Our ECU hour checking service can help assess recorded engine hours on compatible equipment.
We welcome generator selling enquiries from England, Wales, Scotland and Northern Ireland. From a single surplus set to a demolition or facilities management project, give us the actual site location so we can assess collection and transport.
For offshore, island, restricted-access or overseas locations, include the access and shipping requirements at the outset. The practical arrangements are confirmed in the individual proposal.
Offer your existing generator and tell us the power you need next. We can discuss replacement capacity, installation and your changeover programme.
Need help identifying a machine or planning a site clearance? Call 01829 863497.
Tell us where the generator is and share its make, rating, running hours and photographs where available. We review the machine and its removal requirements, discuss an offer and arrange any inspection needed. Once the purchase is agreed, we confirm the paperwork, payment and collection arrangements with you.
Our published buying range is 6–2,500 kVA. This covers small commercial diesel sets through to large industrial standby generators. If you have a larger unit, a synchronised installation or a mixed fleet, contact us with the details so we can assess the opportunity.
We welcome enquiries for CAT / Caterpillar, FG Wilson, Atlas Copco, Bruno, Pramac, Cummins, SDMO / Kohler and other established generator brands. We also consider sets powered by Perkins, Baudouin, Doosan, Dorman, Lister Petter, Volvo Penta, John Deere, Deutz, Scania, MTU and other mainstream engines. An enquiry is assessed on the actual equipment and condition.
Send the details for assessment. Age alone does not describe a generator’s condition, and a low-hours standby set can be different from a heavily used site machine. Tell us about starting problems, damage, missing parts or known faults. Non-running and incomplete generators are considered individually; purchase is not guaranteed.
Yes. We welcome enquiries from demolition contractors, facilities management companies, construction businesses and authorised agents acting for the equipment owner. Include the site programme, access restrictions, isolation status and the date the generator needs to leave. We can also review several assets together.
We can discuss collection and generator decommissioning or removal as part of the proposed purchase. Tell us whether the set is outdoors, in a plant room, on a roof or in a container, and whether lifting access is available. The scope, responsibilities, costs and timing must be agreed for the particular site.
There is no reliable single price per kVA. An assessment considers make and model, output, age, operating hours, condition, service records, completeness and demand for that specification. Transport, lifting and removal requirements also affect the overall proposal. Photographs and accurate details help us give a more useful assessment.
You can still enquire. Photograph the generator, its nameplate, engine plate and controller display if these are safely accessible. Mark unknown details as “not known” instead of guessing. We can use the available information to identify the set and ask for anything else we need.
Yes, you can offer several generators in one enquiry. Give a make, model, rating, hours and location for each unit, or attach a stock list to your email. This is useful for hire fleet changes, construction projects, data centre upgrades and redundant power generation sites.
Yes. Tell us you are considering part exchange and describe the replacement capacity and application you need. We can discuss a new or used generator alongside the assessment of your existing equipment. The equipment, availability and commercial terms are confirmed in the individual proposal.
Include details and photographs of associated fuel tanks, automatic transfer switches, control panels, synchronising equipment and switchgear. Identify what belongs to the generator package and what must remain on site. We will confirm which items are included in any offer.
No. Contact us while the equipment is still installed if that is its current condition. Tell us whether it remains in service and describe the proposed shutdown date. Electrical isolation, disconnection, fuel work and lifting need an agreed plan and appropriately competent people.
Payment and collection arrangements are confirmed when the purchase is agreed, following any required inspection and paperwork. If your demolition or construction programme has a fixed deadline, include it at the first enquiry so we can assess a workable schedule.
Complete the seller form to prepare an email, then attach your photographs, service records or equipment list in your email application before sending it to info@fwpower.co.uk. The website does not upload attachments or send the email for you. You can also email that address directly or call 01829 863497.
A single machine, an end-of-project set or an entire installation — start with your generator details.
Tell us what you need to power. We’ll help you find the right solution.