Space Efficiency and Reliability Play Role in Customer Selection of Power Infrastructure Equipment

AUSTIN, Texas – Nov.  23, 2009 – Critical backup power systems manufacturer Active Power, Inc. (NASDAQ: ACPW) today announced it has deployed its flywheel based CleanSource® 600 kVA UPS (uninterruptible power supply) system to a mission critical datacenter facility located in Houston, Texas. The facility is operated by a life science company. The system provides both power protection and power conditioning against all types of electrical disturbances to ensure 24/7 uptime.

“Space and reliability were both big issues for the customer,” said Gary Rackow, vice president, Sales, Americas. “Active Power’s UPS technology is extremely space efficient and power dense as compared to a conventional double conversion UPS with batteries. An electromechanical solution versus electrochemical, our flywheel UPS system is also highly reliable – seven times less likely to fail as compared to a battery based system.”

To learn more about the reliability of Active Power’s flywheel UPS technology, refer to Active Power whitepaper #103 (‘Reliability Assessment of Integrated Flywheel UPS versus Double-Conversion UPS with Batteries’).

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 datacenters, 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.