800kVA Diesel Generators (640kW)

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 800kVA Diesel Generators (640kW). 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

800 kVA Diesel Generators For Sale

If you have large-scale power supply needs, an 800 kVA generator is a wise investment to ensure your operations never have to cease. These generators offer consistent and reliable power for large residences, data centres, or hospital settings.

Solent Power is an authorised distributor of high-quality diesel generators from reputable manufacturers. Buying an 800 kVA diesel generator from us gives you access to unparalleled support, regular servicing and finance agreements.

Why choose an 800 kVA generator?

These diesel generators have 800 kVA of power to supply consistent power to large-scale operations.

Suitable for large commercial businesses, construction work and the manufacturing or transport industries, they also come with an automatic start function to immediately provide prime and standby power.

Reliable power supply

As a business owner, you’ll know how important it is to ensure operations remain constant. Our generators provide reliable power when needed so that nothing will halt your team’s productivity.

Convenience

When you purchase an 800 kVA generator from Solent Power, you can take advantage of flexible payment options, regular maintenance and services, and a dedicated team to help install the generator.

Peace of mind

Knowing your business has access to prime power means you can approach all operations with peace of mind that nothing will halt their progress. Also, most generator sets have silenced features that won’t disturb employees or customers.

Choose from our extensive range of diesel generators

Our 800 kVA diesel generator models are manufactured according to UK standards and perform well in numerous applications. If you’d like some support choosing a generator or have any questions, please get in touch with us, and we’ll help you find a model to suit your needs.

Our team can also offer support during the installation process and will discuss finance options with you.

800kVA Diesel Generators (640kW) – common questions

FAQ

What is the fuel consumption of 800 kVA generators per hour?

The load of an 800 kVA diesel generator depends on the specific model, fuel type, and efficiency rating. At 100% load, the generator consumes around 160–180 litres of diesel per hour.

Running the generator at 75% burns between 120 and 140 litres, while a 50% load consumes around 80 to 100 litres.

What is the maximum load for an 800 kVA generator?

Technically speaking, an 800 kVA generator’s maximum load is 800 kW, but running it at this level could cause long-term damage to the components, resulting in early replacements.

We recommend adhering to the Power Factor of 0.8 rule, which means your generator can handle a maximum load of 640 kW.

Where can I use an 800 kVA diesel generator?

Opting for an 800 kVA generator gives you a powerful model that suits environments with high capacity requirements. These generators are ideal for large-scale industrial plants with heavy-duty machinery and data centres.

They also serve as backup power solutions for hospitals and large commercial buildings.

Get your 800kVA Diesel Generators (640kW) 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

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