Kohler Energy is now Rehlko

When the Moment Becomes Mission Critical

Our engine upgrades in KD2000 to the KD3750 are engineered to provide unmatched power with sustainability in mind - it is ready for alternative fuels like gas, hydrogen, and ammonia.

When Less is More. Conscious Care maintenance program for KD Series generators

Want to reduce your fuel consumption and carbon footprint without compromising reliability and your peace of mind?

Our New Systems Leave Out Nothing But the Emissions

Our new hydrogen fuel cell systems come with the same proven resiliency and support you expect from Rehlko generators. All we took out were the emissions, giving you another choice on your road to sustainability.

eFRAME Enclosures, Direct from the Factory.

Walk-in enclosures made by Rehlko for Rehlko generators. Quality enclosures that reduce install time, service, and maintenance.

Explore the Latest at Rehlko

Rehlko Fluid Analysis Program

Take a look inside your generator with the Rehlko Fluid Analysis Program and prevent future issues before they arise.

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500REZXD Gas Generator

500REZXD industrial generator. With dependable performance, this generator is ideal for crucial applications like powering hospitals, data centers and commercial buildings.

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