Battery Free Fuel Cell Bus Proof of Concept

icon hydrogen compressoricon money coins arrows pointing down illustration hydrogen molecule icon

Project Overview

Hydrogen fuel cell buses offer a promising advanced technology transit solution, but current designs rely on large, costly battery packs for power management. This project explores a load-following, fuel cell dominant propulsion system that replaces batteries with ultracapacitors, improving efficiency, reducing costs, extending range, and enhancing durability to make hydrogen-powered transit more viable.

By optimizing fuel cell performance and reducing dependency on battery storage, this proof of concept aims to lower capital investment, extend vehicle lifespan, and improve total cost of ownership for transit agencies.

illustration red bus with circle connecting to hydrogen fueling pump
illustration water with arrow up, money coin with arrow down, and gear wrench with arrow up

Why it Matters

Manufacturing costs are a major barrier to advanced technology adoption.
Eliminating costly batteries and converters reduces manufacturing costs by 45%.

Efficiency gains mean lower fuel consumption.
A 20%+ boost in system efficiency reduces operating costs.

Durability is key for fleet operators.
30,000+ hours of service life ensures reliability on par with diesel engines.

Project Milestones

icon computer with green gear and checkmark

Prototype testing and
validation to refine system
performance

icon green, yellow, red meter with dial on red

Real-world deployment
assessments to measure
efficiency gains

icon green road sign with bus and arrow pointing ahead

Market feasibility studies
to evaluate commercial
adoption potential

Project Partners

This project is led by CTE in collaboration collaboration with Nimbus Power Systems, a leader in hydrogen fuel cell innovation.

CTE logo Center for Transportation and the Environment logo Nimbus power systems

“By addressing the key challenges of cost, durability, and performance, we are paving the way for widespread adoption of fuel cell buses across the nation.”

Dan Raudebaugh
CTE Executive Director

Contact Us

Media & Press Relations

Kate Mason
Director of Communications

TVIDC Project Manager

Jackson Danis
Engineering Consultant