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Fuel Flex 450 kW generator

Natural Gas Generator - Mighty Fuel Flex 400 kW

A gas generator with fuel flexibility and unparalleled reliability

Mighty Fuel Flex generator - 400 kW industrial generator rental

Meet your business Energy Transition goals with Aggreko’s clean power rentals

Our market-leading Mighty Fuel Flex 400 kW is the most cost-effective way to meet your Energy Transition goals. Using green gas as fuel, this EPA-certified unit delivers NOx levels as low as 0.15g/bhp-hr, without any fuel or additional exhaust aftertreatment.

At the heart of this clean power generator you’ll find the high-horsepower Waukesha H24 engine. This ensures that the Mighty Fuel Flex 400 kW delivers the highest-density power with the smallest footprint: a high-speed reciprocating gas engine with exceptional fuel efficiency and unparalleled reliability.

As a result, you can lower exhaust emissions, reduce noise levels, and control your total cost of energy – without sacrificing performance.

Leading rental power generation solution for fuel flexibility

True fuel flexibility is a critical step in your Energy Transition and to a more sustainable future. It’s also central to maximizing generator performance and reducing the need for downtime.

With the Mighty Fuel Flex 400 kW, you can instantly switch fuels during operation, without reducing load or affecting availability. Even as your conditions change or fuel reserves become limited, this clean power generator will keep you up and running.

Set to be a leader in the rental industry for versatility and fuel flexibility, the Mighty Fuel Flex 400 kW supports:

  • Flare gas
  • Stranded gas
  • Associated petroleum gas (APG)
  • Liquefied petroleum gas LPG)
  • Compressed natural gas (CNG)
  • Liquefied natural gas (LNG)
  • Biogas landfill gas

What can you expect from our Mighty Fuel Flex 400 kW?

With a mobile, modular design built around a landmark in engine performance, this natural gas generator gives you complete flexibility. But what sets it apart is its resilience and dependability for commercial industrial applications – even at scale, in any conditions.

  • Maximize uptime with a robust engine and less maintenance.
  • Reduce costs associated with servicing and maintenance.
  • Maintain performance even in extreme conditions – ideal for backup power.
  • Achieve the lowest derates on rich gases.
  • Control emissions without external aftertreatment.
  • Scale up and down to balance performance against demand.

More power, less downtime

Waukesha engines are renowned for consistent performance and unbeatable reliability. When it matters, people turn to Waukesha for critical power they can trust. At the heart of the Mighty Fuel Flex 400 kW, the Waukesha H24 offers proven durability in a compact form.

We developed this package with reliability in mind. In fact, engines similar to the one used in the Aggreko 400 kW were located in the base of the Twin Towers when they were struck in 2001. Miraculously, they turned on to keep lights operational until the buildings eventually collapsed.

This clean power generator package is robust in every way. From weather to dust, poor fuel qualities, and extreme temperatures, the Mighty Fuel Flex 400 kW can handle them all. And with oil change intervals at 3,000 hours – double that of many competing engines – your generator will never let you down.

Mighty Fuel Flex 400 kW natural gas generator key data

  • 400 kW prime rating
  • 400 kW continuous rating
  • Waukesha H24 rich-burn engine
  • Autotune and lowest derates on rich gases
  • Low noises levels
  • Lowest controlled emissions: 0.15g/bhp-hr NOx emissions – the best in the market
  • Quick setup and implementation
  • Offshore capable

Hybrid solution for oil and gas applications

Rich-burn combustion provides low emissions and can operate on a range of field gases without derate.

Clean energy solution with low NOx levels

Lower NOx gives you more on-site horsepower with a smaller carbon footprint – while still meeting site tonnage requirements