Denver RTD to Retrofit an Additional Ten Hybrid Electric Mall Shuttle Buses

FREDERICK, Colo., June 1 -- UQM Technologies, Inc. (AMEX:UQM) , a developer of alternative energy technologies, announced today that it has received an order from the Denver Regional Transportation District ("Denver RTD") for UQM(R) generators and motor controllers to retrofit an additional ten hybrid electric mall shuttle buses. Each 45 foot hybrid electric mall shuttle bus will be retrofitted with a 35 kW UQM(R) generator and two UQM(R) power electronic motor controllers to control the operation of the electric propulsion motors currently installed in each bus. Last summer the Company received an order for seven systems that were delivered during the last eight months.

Denver RTD introduced its hybrid electric fleet of MallRide shuttles in 2000, the first large-scale deployment of hybrid electric buses for transit use in the United States. A total of 36 MallRide shuttles operate on the 16th Street Mall in downtown Denver providing a free ride for passengers across the 1.3-mile long mall, which connects with the light rail, express and regional Denver RTD services offered at Denver Union Station, Market Street Station and Civic Center Station.

The hybrid electric MallRide shuttle buses are powered by a compressed natural gas fueled 2.5 liter Ford industrial engine that operates at 2,200 r.p.m. and will turn the UQM(R) generator to produce electricity to recharge the bank of batteries that power the shuttle. The UQM(R) motor controllers feature regenerative braking, a process in which kinetic energy is converted to electrical energy through the braking process and this electrical energy is also used to recharge the battery pack. Each 45 foot MallRide shuttle bus features a low floor design (14 inches above street level) that makes it easier for passengers to step on and off the bus and can transport up to 116 passengers.

"We are pleased that Denver RTD placed an order for additional UQM(R) generators and motor controllers for use in their hybrid electric MallRide shuttle fleet. Previously delivered systems have been installed and are operational in daily service on the 16th Street Mall and this order will allow additional vehicles to be retro-fitted as Denver RTD continues with their plan to retrofit this fleet with reliable high performance UQM(R) equipment," said William G. Rankin, President and Chief Executive Officer of UQM Technologies, Inc.

Denver RTD is a public agency created in 1969 to operate a public transportation system serving the eight county greater Denver metropolitan area. With an annual operating budget of $342 million, Denver RTD operates a total of 1,071 buses in its 2,327 square mile service area and a light-rail system covering 15.8 miles, boarding over 290,000 passengers on an average weekday.

UQM Technologies, Inc. is a developer and manufacturer of power dense, high efficiency electric motors, generators and power electronic controllers for the automotive, aerospace, medical, military and industrial markets. A major emphasis of the Company is developing products for the alternative energy technologies sector including propulsion systems for electric, hybrid electric and fuel cell electric vehicles, 42-volt under-the-hood power accessories and other vehicle auxiliaries and distributed power generation applications. The Company's headquarters, engineering and product development center, and motor manufacturing operation are located in Frederick, Colorado. For more information on the Company, please visit its worldwide website at www.uqm.com.