Active Power Selected to Protect Data Cave

High Efficiency UPS System Provides Energy and Space Efficient Redundant Power
Architecture to Collocation Facility
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 that it
has deployed a total of 2.4 megawatts of CleanSource UPS (uninterruptible power
supply) systems to Data Cave, Inc., a full service collocation datacenter
facility based in Columbus, Ind. Data Cave initially deployed two of Active
Power`s expandable 600 kVA UPS systems in June 2009. In September, Data Cave
added additional modules of high efficiency UPS capacity to double the power
capability of each system to 1200 kVA.

"We approach our power infrastructure plan with an eye on the high nines," said
Caleb Tennis, president, Data Cave. "Active Power was a no brainer, knowing our
customers demand high efficiency and reliability. Because of its modular product
design, we seamlessly doubled the capacity of each UPS system. This enables us
to power more mission critical equipment with the same amount of run time. The
UPS systems provide ample time for the generators to fire up and provide power
to the load."

"Active Power offers a highly modular UPS system so customers are able to
quickly make expansions in the field when more power is required which is one of
our key differentiators compared to competitive UPS systems," said Gary Rackow,
vice president, Sales, for the Americas. "Customers are able to add additional
capacity as business and IT needs evolve. Besides modularity, mission critical
organizations recognize the inherent benefits of the Active Power system and are
choosing to deploy our product to reap these benefits which include increased
reliability, energy and space efficiency and modularity."

A tier IV datacenter facility, Data Cave is a custom purpose built center
designed to withstand large scale natural disasters including tornadoes, floods,
earthquakes and thunderstorms. The 84,000 square foot facility has in place
completely redundant architecture including cooling, electrical power
distribution and networking infrastructure. The facility's multiple data suites
are each segregated within the center which provides increased security in
addition to key card access, biometric hand scanners and video surveillance.

To learn more about the UPS expansion project and its progress, refer to Data
Cave`s blog here.

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.

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 and PowerHouse are trademarks of Active Power, Inc.
All other trademarks are the properties of their respective companies.

Active Power
Investor Contact:
Liolios Group
Ron Both, 949-574-3860
ron@liolios.com
or
Media Contact:
Lee Higgins, 512-744-9488
Public Relations Manager
lhiggins@activepower.com
or
Data Cave Contact:
Caleb Tennis, 866-514-2283
President
caleb.tennis@thedatacave.com

Copyright Business Wire 2009