Catalytica Energy Systems Announces Webcast of its 2003 Annual Meeting of Stockholders

    GILBERT, Ariz.--June 3, 2003--Catalytica Energy Systems announced today that it will broadcast its 2003 Annual Meeting of Stockholders live over the internet on Friday, June 6, 2003 at 10:00 a.m. Pacific Time.
    The meeting will be held at the principal executive offices of Catalytica Energy Systems, located at 1388 N. Tech Boulevard, Gilbert, Arizona. Following the formal business of the meeting, the Company will provide an update on the business and discuss its future outlook.
    Investors will have the opportunity to listen to the meeting and view presentation slides through a CCBN webcast on Catalytica Energy Systems' website at www.CatalyticaEnergy.com under Investor Relations. In addition, an archived version of the presentation will be available for replay at the same site shortly after conclusion of the meeting.
    The webcast is also being distributed over CCBN's Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through CCBN's individual investor center at www.companyboardroom.com or by visiting any of the investor sites in CCBN's Individual Investor Network such as America Online's Personal Finance Channel, Fidelity Investments(R) (Fidelity.com) and others. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com). StreetEvents allows institutional investors to identify, organize, and track the hundreds of conference calls that occur each day during earnings season, to download events of interest to their Outlook calendar, and to RSVP to events online.

    About Catalytica Energy Systems

    Catalytica Energy Systems designs, develops and manufactures advanced products for the energy and transportation industries with a focus on cost-effective solutions for improved performance and reduced emissions from combustion sources. Our proprietary technologies include the application of catalysts to combustion systems and next- generation fuel processors to mitigate the environmental impact of power generation and transportation systems. We are marketing our first commercial product, Xonon Cool Combustion(TM), a breakthrough pollution prevention technology that enables natural gas-fired turbines to achieve ultra-low emission power production. Xonon(R) prevents the formation of nitrogen oxides (NOx), a primary contributor to air pollution, through a proprietary catalytic combustion process. We are also conducting technology development efforts related to fuel processing for fuel cells and are actively pursuing adaptation of our core Xonon technology to mobile, stationary and off-road diesel applications. Find Catalytica Energy Systems on the Worldwide Web at www.CatalyticaEnergy.com.