Amerada Hess Increases Ownership Stake in Nuvera Fuel Cells Fortune 200 energy firm renews commitment to fuel cell company by purchasing interest formerly held by Arthur D. Little

Milan / Cambridge, Mass., November 20, 2002 – Nuvera Fuel Cells, Inc., today announced that Amerada Hess has purchased the ownership interest in Nuvera held by Dehon, Inc., the surviving entity of the former Arthur D. Little, Inc. By virtue of the purchase, Amerada Hess increased its ownership stake to 53 percent of Nuvera's outstanding shares. The remaining Nuvera shares are held by Gruppo DeNora, a technology licensing, engineering, and manufacturing company headquartered in Milan, Italy.

The investment by Hess renews the firm's commitment to being a significant part of Nuvera's successful efforts in developing and commercializing fuel cell technology. "As a Fortune 200 company, Amerada Hess has achieved its success based on its ability to make sound business and investment decisions," said Roberto Cordaro, Nuvera's President and Chief Executive Officer. "We are extremely pleased with Hess's renewed commitment to our business strategy and direction, especially in these difficult economic times." Cordaro further observed that Hess's investment would facilitate the company's plan for future strategic investment by others.

Amerada Hess
Amerada Hess Corporation (NYSE: AHC) headquartered in New York, is a global integrated energy company engaged in the exploration for and the production, purchase, transportation and sale of crude oil and natural gas. Amerada Hess also engages in refining and markets refined petroleum products, natural gas and electricity in the United States. Hess specializes
in providing Total Energy Solutions to commercial, industrial, and institutional end-users. Hess complements its asset-based supply services with an integrated portfolio of advanced energy services.

About Nuvera
Nuvera Fuel Cells (www.nuvera.com) is a leading designer and developer of fuel cell power systems, fuel processors, and fuel cell stacks for the automotive, distributed generation, commercial, and industrial markets. Since 1992, its fuel processors and PEM fuel cell stacks have been successfully tested and evaluated by major automobile and appliance manufacturers, research institutions, telecommunications organizations, and industrial and energy companies. Nuvera's fuel processors have demonstrated the ability to extract hydrogen from a number of liquid and gaseous fuels, including gasoline, ethanol, methanol, natural gas, kerosene, propane, butane, home heating oil, and diesel.

Contact
Robert Derby
Director, Marketing Communications
Nuvera Fuel Cells

Tel: +1-617-245-7571
Fax: +1-617-245-7571
Cell: +1-508-254-9668
Email: derby.r@nuvera.com