More than 12 Megawatts of Flywheel UPS Power Protection Selected for Mission Critical Facilities

AUSTIN, Texas (Nov. 24, 2008) – 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.

“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. 

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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.