Ballard Powers DaimlerChrysler's Fuel Cell Vehicle on a 3,000 Mile Drive Across the United States.

Business Editors & Automotive/Energy Writers

VANCOUVER, British Columbia--(BUSINESS WIRE)--June 4, 2002

Ballard Power Systems (Nasdaq:BLDP) (TSE:BLD) announced today that its Mark 900 series fuel cell has powered DaimlerChrysler's NECAR 5 fuel cell vehicle in its historic drive from San Francisco, California to Washington, D.C. The successful completion of this 13-day, 3,000 mile (4,800 kilometre) endurance test is the world's first for a fuel cell vehicle and demonstrates a new level of reliability and endurance achieved by Ballard(R) fuel cell engines.

The NECAR 5 is a Mercedes-Benz A Class vehicle powered by a Ballard(R) fuel cell engine generating 75 kilowatts of power. Hydrogen is generated onboard the vehicle from methanol, utilizing a fuel processor developed by Ballard.

"This historic journey demonstrates the capabilities of Ballard(R) fuel cells as we look to power the future," said Firoz Rasul, Ballard's Chairman and Chief Executive Officer. "The valuable system and operational data gathered by Ballard's Transportation Division engineers will play an important role in the development of our commercial fuel cell engines. This endurance test provides Ballard with real-world experience in testing its fuel cell engine in a variety of conditions including differing altitudes, temperatures and humidities that cannot be matched through lab testing. Through this testing Ballard gained significant insight into optimizing the operating parameters of the complete fuel cell engine, including the fuel cell, fuel processor and overall system controls."

Ballard Power Systems is recognized as the world leader in developing, manufacturing and marketing zero-emission proton exchange membrane ("PEM") fuel cells. Ballard is commercializing fuel cell engines for transportation applications and fuel cell systems for portable and stationary products ranging from 1 kilowatt to 250 kilowatts. Ballard is also commercializing electric drives for fuel cell and battery-powered electric vehicles, power conversion products for fuel cells and other distributed generation products, and is a Tier 1 automotive supplier of friction materials for power train components. Ballard's proprietary technology is enabling automobile, bus, electrical equipment, portable power and stationary product manufacturers to develop environmentally clean products for sale. Ballard is partnering with strong, world-leading companies, including DaimlerChrysler, Ford, EBARA, ALSTOM and FirstEnergy, to commercialize Ballard(R) fuel cells. Ballard has supplied fuel cells to Honda, Nissan, Volkswagen, Yamaha, Cinergy, Coleman Powermate and Matsushita Electric Works, among others.

Ballard's Common shares are listed on The Toronto Stock Exchange under the trading symbol "BLD" and on the Nasdaq National Market System under the symbol "BLDP". Ballard, the Ballard logo and Power to Change the World are registered trademarks of Ballard Power Systems Inc.