EPA Case Study Praises Aerojet’s Solar Array Partnership Signifies the Positive Impact Around the State

SACRAMENTO, Calif., Aug. 5, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced today that the Environmental Protection Agency (EPA) has released a 14-page study highlighting the company’s partnership with EPA, SMUD and Solar Power, Inc. (SPI) that led to the installation of the largest single-site industrial solar array system in California and one of the largest single-site industrial solar farms in the United States. The study documents the key factors, lessons learned and required steps that led to the rapid, successful restoration of Aerojet land to beneficial use as an energy-producing environmental asset.

Aerojet and its partners designed and installed the fully operational six megawatt (MW) solar farm that spans across 40-acres of Aerojet’s land. The solar array now powers portions of the company’s existing groundwater remediation efforts, provides existing power for Aerojet’s internal operations, and reduces the company’s carbon footprint. For the next 25 years this system will produce approximately 11,000,000 kWh of renewable energy annually. To put that in perspective, the first-year net clean energy benefits equate to removing approximately 1,075 combustion engine vehicles from California’s highways, or the clean air benefits realized from planting 1,396,423 trees. The EPA and other state regulatory agencies supported the partnership with land evaluations, remedial consultation and recommendations throughout the development and final array installation.

“This study does an excellent job of describing the process that was undertaken and the partnerships that were created to implement this achievement,” said Vice President of Environmental, Health and Safety, Chris Conley. “We are pleased with the outcome of this project and we hope to implement similar sustainable projects in the future.”

The development of Aerojet’s solar array farm illustrates how public/private collaborations can launch and deliver on renewable energy initiatives that have an energy-savings impact both locally and throughout the state. These types of projects are also a valuable way to optimize land use, thereby providing critical environmental benefits around the country and cost savings to innovative corporations such as those achieved by this collaboration.

To view the complete report, please visit: http://0069d75.netsolhost.com/docs/AerojetCaseStudy0710FINALlarge.pdf

Aerojet is a world-recognized aerospace and defense leader principally serving the missile and space propulsion, defense and armaments markets. GenCorp is a leading technology-based manufacturer of aerospace and defense products and systems with a real estate segment that includes activities related to the entitlement, sale, and leasing of the company’s excess real estate assets. Additional information about Aerojet and GenCorp can be obtained by visiting the companies’ Web sites at http://www.Aerojet.com and http://www.GenCorp.com.