Active Power Receives Two Multimillion Dollar Orders from Caterpillar

AUSTIN, Texas--(BUSINESS WIRE)--Active Power, Inc. (NASDAQ: ACPW), inventor and manufacturer of the most energy-efficient critical power systems in the world, today announced two new orders from its OEM partner Caterpillar. The first is a follow on order for ten 900 kVA UPS (uninterruptible power supply) systems. These systems are scheduled for delivery in first quarter 2009. The second order is for six 900 kVA systems with delivery scheduled for later this year.

“These two orders exemplify the confidence the market is placing in flywheel technology and its inherent benefits of energy and space efficiency, high reliability and environmental sustainability.”

“We are pleased to see the continued market momentum our OEM partner is experiencing, which is evidenced by the selection of Caterpillar for these large system deployments,” said Jim Clishem, president and CEO, Active Power. “These two orders exemplify the confidence the market is placing in flywheel technology and its inherent benefits of energy and space efficiency, high reliability and environmental sustainability.”

Since its inception in 1992, Active Power has shipped more than 2,000 flywheels in systems with more than 50 million hours of runtime in the field. One of Active Power UPS system’s key differentiators is its ability to perform at efficiency levels up to 98 percent, resulting in lower energy consumption and a real bottom line impact to energy costs for data center operators.

About Active Power

Active Power (NASDAQ: ACPW) provides efficient, reliable and green critical power solutions and uninterruptible power supply (UPS) systems to enable business continuity in the event of power disturbances. Founded in 1992, Active Power’s flywheel-based UPS systems protect critical operations in data centers, healthcare facilities, manufacturing plants, broadcast stations and governmental agencies in more than 40 countries. With expert power system engineers and worldwide services and support, Active Power ensures organizations have the power to perform. For more information, please visit www.activepower.com.

Cautionary Note Regarding Forward-Looking Statements

This release may contain forward-looking statements that involve risks and uncertainties. Any forward-looking statements and all other statements that may be made in this news release that are not historical facts are subject to a number of risks and uncertainties, and actual results may differ materially. Specific risks include delays in new product development, product performance and quality issues and the acceptance of our current and new products by the power quality market. Please refer to Active Power filings with the Securities and Exchange Commission for more information on the risk factors that could cause actual results to differ.

Active Power, CleanSource and CoolAir are registered trademarks of Active Power, Inc. The Active Power logo, PowerHouse and PowerCentre are trademarks of Active Power, Inc. All other trademarks are the properties of their respective companies.