Allison eGen Flex™ electric hybrid propulsion system spurs growth of clean transportation in Midwest

Aug. 2, 2022
Agencies in Indiana and Wisconsin have selected Allison’s system to be installed in their fleets.

Allison Transmission’s next generation eGen Flex™ electric hybrid propulsion system was selected by several public transit agencies in the Midwest for their bus fleets. 

The Metropolitan Evansville Transit System, which provides public transportation services for Evansville, Ind., will integrate GILLIG buses equipped with the eGen Flex into its fleet. In addition, GO Transit, based in Oshkosh, Wis., and the Muncie Indiana Transit System have selected eGen Flex-equipped New Flyer buses for their fleets.  

“Allison is proud to partner with public transit agencies across the Midwest to support their efforts to reduce carbon footprints and dependence on fossil fuels in order to protect the environment and enhance quality of life for their passengers,” said David Graziosi, chairman and CEO, Allison Transmission. “As fleets move to electric hybrid and full EV technology to support sustainability goals, Allison is pleased to be a partner of choice due to our ability to deliver innovative technology specifically designed to meet the needs of the transit industry.” 

In addition to this recent growth across the Midwest, Allison announced in June the delivery of the first buses equipped with the eGen Flex electric hybrid propulsion system to IndyGo, the Indianapolis Public Transportation Corporation. 

The company says in-use testing of eGen Flex in 2022 confirmed the engine was off more than 50 percent of the time the bus was in operation. As a result, the eGen Flex equipped bus operated in full EV mode for more than half of its day. Allison’s eGen Flex system can operate in electric-only mode for up to 10 consecutive miles or 50 minutes, multiple times per route and per day. The system’s geofencing technology eliminates engine emissions and noise while loading and unloading passengers in dense pedestrian areas and in zero-emission zones and bus depots.  

Allison’s eGen Flex system is the next generation of Allison’s proven H 40 EPTM electric hybrid propulsion system, which has been operating in transit buses since 2003.