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Modine Selected as Supplier for GILLIG Bus Platform

Modine EVantage Thermal Management Systems selected to optimize battery and power electronics thermal performance, increasing system efficiency of hybrid-electric buses.

Modine logo

Modine will be supplying thermal management systems for GILLIG to integrate into their hybrid electric buses.

Photo: Modine

2 min to read


As the transportation industry prioritizes zero-emissions solutions, Modine was selected as the thermal management supplier for GILLIG LLC for their hybrid-electric vehicles powered by the Allison eGen Flex system.

Modine will provide its advanced EVantage Battery Thermal Management Systems (BTMS) and inverter cooling module for the GILLIG Hybrid bus. This system is purpose-built to optimize thermal performance and system efficiency and will ensure longevity and consistent performance under various operating conditions.

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Providing Hybrid Buses

GILLIG has delivered over 100 hybrid buses with Modine’s thermal management technology since 2023, proving the integration’s reliability and performance success in various communities such as Indianapolis, Jefferson City, Marin, Haverhill, Springfield, Cincinnati, and North Kentucky.

GILLIG recently delivered 15 Allison eGen Flex hybrid buses to Citibus in Lubbock, Texas, and are planning another delivery of 15 buses later this year.

"At GILLIG, our commitment to sustainable transportation solutions is supported by strong partnerships with forward-thinking companies like Modine, and we have reinforced the reliability of our Hybrid buses as a result," said Benjamin Grunat, VP, product planning and strategy, at GILLIG. "Our longstanding supplier relationship with Modine is built on a shared dedication to creating a more environmentally responsible and efficient future for public transportation."

Long-Standing Business

GILLIG has been at the forefront of hybrid bus technology for more than two decades. They deliver reliable, quiet, and fuel-efficient solutions for the transportation industry. Providing adaptable and versatile bus models in a diverse range of propulsion types.

Each bus comes equipped with an integrated system that includes a six-cylinder, clean diesel engine, an electric drive unit, a controller module, aa power processor, and a roof-mounted energy storage system. 

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The eGen Flex electric hybrid propulsion system made by Allison Transmissions provides advanced hybrid propulsion and electric assessor operations.

With over 100 years of domain expertise, Modine produces complete commercial electric vehicle thermal management systems that regulate battery, traction motor, and power electronics temperatures. 

Modine solutions are available as plug-and-play systems or flexible design solutions for commercial EV customers.

Combining state-of-the-art heat exchanger technology and smart electronic components allows Modine to maximize cooling while minimizing power draw.

Modine EVantage thermal management systems are designed to regulate battery temperatures effectively and maintain the thermal envelope of power electronics to support daily operations in all weather conditions.

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