Solaris Buses with Allison Hybrid System Now Operating in Oslo

Five 18 metre Solaris Urbino hybrid city buses equipped with Allison’s proven H 50 EP system are now operating in Oslo, Norway.

Bollebygd, Sweden – Solaris Bus & Coach and Allison Transmission have being co-operating since 2006 to deliver environmental friendly buses to the market. The Solaris Urbino 18 Hybrid is the successful result of this partnership, and now five of these vehicles are transporting passengers on the streets of Oslo, Norway. Solaris articulated buses are equipped with the Allison H 50 EP system, a patented two-mode parallel architecture, which features two 75 kW electrical motors. The advanced electronics of the hybrid system integrate power from a 181 kW EEV-standard combustion engine with the energy recuperated during vehicle braking and stored in NiMH battery packs, achieving ideal performance and reduced fuel consumption.

“The reason for choosing the Allison hybrid system is its proven performance and reliability,” says Terje Bjørndalen, managing director, Solaris Norway. “Over 5,000 H 50 EP hybrid systems operate worldwide in the bus market. We know it performs, and the service support provided by Diesel Power, Allison’s Norwegian distributor, is excellent.”

Environmental and Economic Advantages

Hybrid buses deliver great advantages, both for the environment and the cost of running a bus fleet. Solaris estimates that its vehicle emissions contain 25 percent less CO2, 32 percent less hydride, 56 percent less carbon monoxide, and 78 percent less particle emissions than traditional diesel power.

“Depending on the duty cycle and driver’s skill, fuel consumption can be reduced by around 22 to 24 percent. The fleet’s operational cost can also be improved as the diesel engine works under optimal conditions and is less exposed to wear and tear. The electrical motors operate as an auxiliary breaking system during the regeneration phase, reducing brake wear and improving safety,” Terje Bjørndalen commented.

Jun 21, 2012

About Allison Transmission

Allison Transmission (NYSE: ALSN) is the world’s largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles and is a leader in electric hybrid-propulsion systems for city buses. Allison transmissions are used in a variety of applications including refuse, construction, fire, distribution, bus, motorhomes, defense and energy. Founded in 1915, the company is headquartered in Indianapolis, Indiana, USA and employs approximately 2,700 people worldwide. With a market presence in more than 80 countries, Allison has regional headquarters in the Netherlands, China and Brazil with manufacturing facilities in the U.S., Hungary and India. Allison also has approximately 1,400 independent distributor and dealer locations worldwide. For more information, visit