150kVA Diesel Generators (120kW)

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 150kVA Diesel Generators (120kW). 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

150kVA Diesel Generators For Sale

A 150kVA generator is ideal for commercial and industrial applications including prime power and as a backup standby generator. Commonly suitable in standby applications for 200A mains supplies.

Whether you’re looking for prime power or a standby generator, Solent Power stocks a wide range of 150 kVA models from reputable manufacturers, including the CAT Three-Phase diesel generator, which has an automatic start and silent build features, and the Teksan TJ150PE featuring a UK Perkins engine and a deep sea electronics control panel.

Where others will happily avoid any of your important technical questions and sell you inferior products with no warranty or limited warranty terms , Solent Power have in-house employed team members that cover the UK to ensure your power is protected.

Why choose 150kVA generator models?

The main benefit of a 150kVA generator is it supplies enough power for both commercial and industrial applications. Whether you’re working off the grid and using equipment, or want a cost-effective solution ensuring your business remains operational, these generators can be suitable for a range of high power prime applications.

They’re also ideal for standby applications, making them a popular choice for healthcare facilities, manufacturers and data centres and large estates.

What can I expect with a 150kVA diesel generator

  • Fuel-efficiency: A diesel generator is more efficient than traditional petrol, giving you much better efficiency and running costs. A 150 kVA diesel generator will run around 15-18L per hour of diesel @ 50% load.
  • Reliability: Investing in a generator from a reputable distributor means you’re protecting your business and ensuring it’s always around to offer support. We refuse to supply poor quality equipment and only use reputable generator brands such as Caterpillar and Himoinsa.
  • Low noise level: Canopied silent diesel generators have acoustic reduction and are manufactured with exhaust silencers fitted in the machine enclosure to reduce noise where certain areas can be sensitive. This is important on a site that may be surrounded by residents.
  • Quality and support focused product: All diesel generators we supply have market leading engines, alternators and controllers. For example, Perkins generators we support with a next day parts service, and we have strong relationships with the leading alternator manufacturers if you need an automatic voltage regulator in the future. We only offer user friendly control panels and such as deep sea electronics ensuring that all components such as battery chargers and heaters are reliable.

We supply generators manufactured by reputable providers

As a UK authorised distributor of 150kVA generators, we have access to parts and support directly with the manufacturers.

Our team is always available if you need support choosing the correct generator, and we can also offer UK-based diesel generator installations, services and maintenance. Please feel free to contact us today.

150kVA Diesel Generators (120kW) – common questions

FAQ

What is the fuel consumption of a 150 kVA generator per hour?

The following figures are general estimates of a 150 kVA generator’s fuel consumption rates:

  • 100% Load: The generator will consume around 30 to 35 litres of fuel hourly.
  • 75% Load: Running the generator at 75% capacity consumes between 22 and 26 litres hourly.
  • 50% Load: A 50% load will consume around 15 to 18 litres each hour.
    However, if your diesel generator is older or poorly maintained, fuel consumption rates might be higher.

What is the maximum load for a 150 kVA generator?

Your generator’s maximum load depends on its Power Factor. In most cases, this is 0.8, which means the generator can achieve a maximum load of 120 kW.

While you can technically run a 150 kVA generator at 150 kW, this can damage its components and lead to overloads. It also increases the risks of costly expenses.

Where can I use a 150 kVA diesel generator?

The best thing about 150 kVA diesel generators is their versatility. These machines provide seamless backup and prime power in a variety of settings, including:

  • Powering machinery in industrial settings or off-grid construction sites.
  • Providing reliable backup for commercial buildings, including offices and shops.
  • Offering support for agricultural settings.
  • Providing power for outdoor events.
  • Supporting the needs of large homes.

Get your 150kVA Diesel Generators (120kW) 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