Fremont, California April 24, 2009 - Advanced Power Projects, Inc. (POWER) announces the successful demonstration of its Simplified Combined Cycle (SCC) using the Cheng Power Systems CLN® technology on a GE LM2500 PE combustion gas turbine. The tests were conducted at the Calpine Corporation-operated Agnews Power Plant in San Jose, California, and were primarily funded by StatoilHydro.

CLN® is a cost-effective emission control technology that simultaneously reduces both NOx and greenhouse gas (CO2), as well as provides energy savings. In January 2009, the new premixed steam and fuel nozzles were installed at the plant, replacing the water injected fuel nozzles. Data were collected at 14 MW, 18 MW and 22 MW outputs. The test resulted in 8 ppmvd (at 15% O2) NO_x as recorded on the Calpine Continuous Emissions Monitoring System, at 1.7 steam to fuel ratio and 22 MW output. This was better than expected.

The test lowered NOx emissions to meet stringent California emission control standards without the need for ammonia flowing into the exhaust flow catalytic reduction system. The results were witnessed by a California State-assigned third party and recorded on the plant's continuous emissions monitoring system. With the U.S. economic stimulus package, the payback for such systems may be as low as six (6) months when a steam source is available.

Calpine is a major U.S. power company, currently capable of delivering over 24,000 MW of clean, cost-effective, reliable and fuel-efficient electricity to customers and communities in 16 states in the United States and Canada. Using advanced technologies, Calpine generates electricity in a reliable and environmentally responsible manner for the customers and communities it serves. Calpine is listed on the NYSE — ticker symbol CPN. For more information please visit www.calpine.com.

StatoilHydro is an integrated technology-based international energy company primarily focused on upstream oil and gas operations. Headquartered in Norway, they have more than 30 years of experience from the Norwegian continental shelf, pioneering complex offshore projects under the toughest conditions. Their culture is founded on strong values and a high ethical standard. Their aim is to deliver long-term growth and continue to develop technologies and manage projects that will meet the world’s energy and climate challenges in a sustainable way. StatoilHydro is listed on the NYSE and Oslo Stock Exchange, refer to website: www.statoilhydro.com/en/.

Cheng Power Systems, Inc.'s goal is to improve energy efficiency, reduce pollutants and reduce global warming. The founder, Dr. Dah Yu Cheng, is the inventor of the Cheng Cycle® (steam injected gas turbine), CLN (emission control technology) and fluid systems devices, etc. For the past 45 years, Dr. Cheng has been devoted to energy research and the environment. After laboratory development by Cheng Power Systems, Inc., the CLN® technology has been demonstrated in GE Frame 6Bs, Rolls Royce (RR) Allison 501 KBs and RR Avon 1535 engines since its inception in 2001. Cheng Power Systems, Inc.'s website is www.chengpower.com.

Headquartered in Fremont, California, POWER is focused on clean, fuel-efficient natural gas-fired power generation. POWER has acquired exclusive marketing rights for CLN® in the U.S. for 25 MW and greater turbines. The Company applies experienced professionals and advanced power technologies to enable existing power plants to generate more power at lower cost with reduced air emissions. The Company is positioned to make a major impact on the U.S. power market by upgrading existing power plants, and partnering with wind and solar power developers to provide reliable, highly efficient backup power for new renewable energy projects. For more information visit our website at www.advancedpowerprojects.com.