400kVA Diesel Generators (320kW)

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
Request a Quote
Call 02381 550144
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
Authorised distributor & service partner
HIMOINSA
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 400kVA Diesel Generators (320kW). 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

400kVA Diesel Generators For Sale

For ongoing prime power and standby power applications, a 400kVA generator delivers robust solutions for commercial and residential settings. As a fully authorised distributor of diesel generators, we offer a range of models from reputable manufacturers.

With expert support in installing the diesel generator and a dedicated team to help you choose the suitable model, Solent Power puts your power needs first.

Consistent power for prime and standby applications

As one of the higher power generators available, 400kVA diesel generators are ideal for a reliable power supply when you need it most. Well suited to prime applications, you can use the generator when you don’t have access to the grid and need access to various tools and equipment.

Investing in a standby generator ensures you can enjoy the continued operation of your business in power outages. Most 400kVA generators are fitted with automatic transfer switches, seamlessly switching over when your standard supply is disrupted.

When you choose a 400kVA generator, you’ll get:

  • Fuel Efficiency: As these generators use diesel, they’re more fuel efficient and can save money on running costs. Better still, they’re ideal for reducing your carbon emissions.
  • Flexibility: Always ensure prime and standby power to your business and home. The generator will ensure there are no disruptions to business operations.
  • Convenience: Newer generators have a smaller noise pressure level, as they come with a base frame and components designed to mask noises.

Choose from a range of 400kVA generators

The generators we stock are manufactured by reputable engineers and offer a range of benefits, including a Deep Sea Electronics control panel, noise reduction, alternator and frequency stabilising controls.

Popular options include the Perkins CPS – AP400S, and we’re constantly adding new models as and when they become available.

If you need help choosing the right generator for your needs, please contact our expert sales team by phone or use the form on our website. We deliver across the UK and have experienced engineers to support you with installation and generator maintenance.

400kVA Diesel Generators (320kW) – common questions

FAQ

What is the fuel consumption of a 400 kVA generator per hour?

The fuel consumption of your 400 kVA generator depends on its engine efficiency, load, and fuel type. However, the average consumption levels are as follows:

  • 100% load: Between 80–90 litres
  • 75% load: Between 60–70 litres
  • 50% load: Between 40–50 litres

Please refer to your generator’s manual for more information, as the consumption levels vary.

What is the maximum load for a 400 kVA generator?

While a 400 kVA generator can technically supply a maximum of 400 kW power, it’s never a good idea to run it at full capacity due to the potential damage it can cause.

The maximum recommended power factor is 0.8, which means a 400 kVA generator has a maximum load of 320 kW.

Where can I use a 400 kVA diesel generator?

If you’re looking for a heavy-duty generator, you can’t go wrong with a 400 kVA model. These machines can generate prime and standby power in a range of settings, including:

  • Factories, large-scale workshops and manufacturing plants.
  • Powering equipment and heavy-duty machinery.
  • Providing backup support for healthcare facilities and large offices.
  • Large outdoor events.

Get your 400kVA Diesel Generators (320kW) quote

Tell us your load and timescale — we'll come back with the right set and a price, usually the same working day.
Request a Quote
Call 02381 550144

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

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