UQM Technologies Inc. has released its PowerPhase HD 220 electric propulsion system for the commercial vehicle market.

The platform, which is specifically designed for heavy-duty commercial trucks and buses, yields a continuous output of 120 kW and a maximum output of 220 kW. UQM says the system is production-ready and will be built in its manufacturing facility in Colorado.

"The PowerPhase HD 220 is an important addition to our product line and represents a significant opportunity to grow our customer base and drive revenue and market-share growth," says Eric Ridenour, president and CEO. "The combination of significant power and high efficiency delivered by the HD 220 is ideal for the commercial heavy-duty trucks and bus markets."

UQM already offers the PowerPhase Pro 100 and 135 systems for battery-electric and hybrid-electric vehicles. These platforms are used in the CODA electric passenger car, Proterra's electric transit buses and Electric Vehicles International's electric medium-duty trucks and walk-in vans.