500kVA Diesel Generators (400kW)

Standby and prime power for data centres, hospitals, manufacturing and process-critical sites across the South. Supplied, installed, commissioned and maintained by our own engineers.

  • Turnkey supply, installation & commissioning
  • On-site load bank testing & compliance
  • Rapid emergency response & planned maintenance
Get a quote in 24 hours
Tell us your application and we'll come back with sizing advice and a price — usually same working day.
No obligation · Your details go straight to our generator team
Why Specify Solent Power

One team, from sizing to standby

We don't just sell the set. We size it to your load, install and commission it, prove it under load, and keep it running — so accountability sits in one place.
Turnkey Delivery
Supply, mechanical & electrical install, fuel systems and commissioning handled inhouse.
Load bank tested
On-site resistive load bank testing to verify performance and meet compliance requirements.
Rapid Response
Field engineers on call for breakdowns and emergency temporary power when you can't be down.
Planned Maintenance
Service contracts and UPS support to keep critical power resilient year-round.
Diesel Generators for any application

Choose your set, or let us spec it

A selection from our range of 500kVA Diesel Generators (400kW). Not sure which suits your load profile? Send the form above and an engineer will recommend the right unit.
Sizing help

NOT SURE WHAT SIZE YOU
NEED?

Oversizing wastes capital; undersizing risks your site. Tell us your critical load and we'll size it properly — no charge, no obligation.
02381 550144
Talk to an engineer

500kVA Diesel Generators For Sale

If you have extensive prime power or reserve power supply needs, a 500kVA generator will offer peace of mind and a consistent electricity supply when you need it most.

Solent Power is the go-to place for all your power requirements as an authorised distributor of a range of diesel generator manufacturers and sizes.

The benefits of investing in a 500kVA diesel generator

Diesel generators come in various sizes, from as low as 10kVA to over 2000kVA, but most medium-scale operations will be fine with 500kVA. These generators offer numerous benefits for residences and commercial settings, including safety and backup power.

Versatility

Many generators are there for backup, ensuring operations can continue during a power cut. However, some people also use them if they work in remote settings because the generators can power up vital equipment and boost productivity.

Investing in a 500kVA model is ideal if you operate large businesses or events such as manufacturing services, data centres, and providing electricity for festivals.

Reliability

Power outages occur, and they’re usually a minor annoyance. However, hospitals and emergency services might not be able to function without power, but generators are a reliable energy source.

Commercial settings rely on regular customers, and the right generator can ensure nothing impacts your operations.

Economical incentives

Purchasing a diesel generator does require an initial investment, but they can also be cost-effective solutions. Diesel boasts fuel efficiency and requires less maintenance, meaning you can save money and still benefit from a machine that ensures your workplace or home continues to function as normal.

Buy a high-quality diesel generator from Solent Power

Solent Power is an authorised distributor of 500kVA generators, and we offer a range of high-quality solutions from respected manufacturers. The CAT 500kVA model has a silenced build to ensure it doesn’t disrupt your employees and customers, along with an automatic start function.

You can also take advantage of our finance deals, ensuring you get a high-quality generator without the upfront expenses.

With a team of experts ready to answer any questions and a commitment to providing our customers with ongoing support and generator servicing, Solent Power gives you practical models that are tough enough for numerous residential and commercial applications.

Please feel free to contact us through the website or phone number to discuss our range of diesel generators and diesel generator installation service.

500kVA Diesel Generators (400kW) – common questions

FAQ

What is the fuel consumption of 500 KVA generators per hour?

On average, a 500 kVA diesel generator running on a 25% load will consume around 36 litres of fuel an hour, with the rates increasing per load. A 100% load will consume up to 150 litres an hour. 

What is the maximum load for a 500 kVA generator?

The maximum load of your generator depends on its Power Factor. As most industrial models have a Power Factor of 0.8, the average maximum load is around 400 kW. 

However, some generators can run on prime power at 450 kW. The manufacturer’s manual provides the exact maximum load. 

Where can I use a 500kVA diesel generator?

Perhaps the best thing about 500 kVA generators is their versatility and suitability for multiple applications, including: 

  • Factories and other manufacturing businesses 
  • Agricultural companies 
  • Outdoor events 
  • Hospitals 
  • Working in off-grid locations 
  • Data centres 
  • Construction sites

Get your 500kVA Diesel Generators (400kW) quote

Tell us your load and timescale — we'll come back with the right set and a price, usually the same working day.

Solent Power Ltd (Company Number 12622565) is a company registered in England and Wales. Our registered office is located at Station yard, Bowes Hill, Rowlands Castle PO9 6BP. VAT No. 363504018

Copyright © 2026 Solent Power Ltd
Sitemap