Revolutionizing the trucking industry with a fully self-contained hybrid energy heating and cooling (HeHC) .
Customized Comfort for All.

Environmental Power Unit™

The epu™ offers versatile options with different sizes, available for under-bed or external installation. Enjoy cleaner air and wake up with a smile, thanks to comfortable sleep without idling, fuel waste, or noise.

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About Us

Fortified Energy Systems INC.

Fortified Energy Systems, Inc. is the visionary force behind the epu™ Environmental Power Unit. With a deep-rooted experience in developing and delivering cutting-edge energy solutions, we specialize in large-scale solar and microgrid systems. Our team is dedicated to driving the green future by developing, testing, and manufacturing innovative technologies that pave the way for a more sustainable world. The epu™ is the latest testament to our commitment to energy innovation, designed to meet the needs of today’s trucking industry while reducing environmental impact.

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  • Quick and Easy Installation

    The epu™ is designed for simplicity, with installation taking only about 3 hours—no mechanical skills required. With no need for alternator or engine connections, the process is straightforward and efficient.

  • Maintenance-Free Reliability

    Unlike traditional APUs or other electric systems, the epu™ is virtually maintenance-free. Designed for longevity and reliability, enjoy hassle-free operation and optimal performance without the need for frequent maintenance.

  • Fuel and Mechanical saving

    Efficiency That Pays Off. With the epu™ , you save 1 gallon of diesel fuel per hour when your truck is not in motion, leading to an average monthly savings of $750 - $1000. Additionally, by reducing engine idling, you prevent costly wear and tear, significantly lowering maintenance expenses.

epu™ Features

Save thousands of dollars on diesel fuel and maintenance costs along with carbon emissions

  • Short-Term Financial Breakeven
  • Operator and Fleet ROI
  • Driver Retention
  • Driver Quality Lifestyle & Satisfaction

Better yet, see us in person!

We love our customers, so make an appointment and we’ll be there.

Call us Now

(877) 382-2FES

Financing Available

Reduce Your Carbon Foot Print

epu™ Change Starts Here

Fewer gas station visits

The epu™ saves up to 12 gallons a day of diesel fuel.

Eepu™ off the truck

The epu™ only weighs 135 lbs. and installs in 3 hours.

Only 2 umibilical cords

Only a 12v cable to the existing battery pack and a control cable to the on/off power switch

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To Get Started!

A customer service technician will contact you within 24 hours.

We value our customers, so don't hesitate to contact us anytime!