CESI Catalytica Energy Sys (MM)

Catalytica Energy Systems, Inc. (NASDAQ:CESI), announced today that it will report second quarter 2007 financial results after the market closes on Tuesday, August 14, 2007. In connection with this announcement, members of the public are invited to listen to the Company's live quarterly conference call on the Internet at 1:45 p.m. Pacific Time, 4:45 p.m. ET the same day. The call will be webcast by Thomson and can be accessed via the Company�s web site at www.CatalyticaEnergy.com. The webcast is also being distributed through the Thomson StreetEvents Network to both institutional and individual investors. Individual investors can listen to the call at www.fulldisclosure.com, Thomson�s individual investor portal, powered by StreetEvents. Institutional investors can access the call via Thomson�s password-protected event management site, StreetEvents (www.streetevents.com). About Catalytica Energy Systems Catalytica Energy Systems, based in Tempe, Arizona, provides innovative�products and services to meet the growing demand for clean energy production, with a focus on cost-effective emissions control solutions for the coal-fired power generation industry. Through its SCR-Tech subsidiary, the Company offers a variety of services for coal-fired power plants that use selective catalytic reduction (SCR) systems to reduce nitrogen oxides (NOx) emissions. These services include SCR catalyst management, cleaning and regeneration, as well as consulting services to help power plant operators optimize efficiency and reduce overall NOx compliance costs. For more information, please visit www.CatalyticaEnergy.com.