SatCon Delivers Power Conversion and Control System for Combat Vehicle; SatCon System Provides Power and Controls for Marine Corp's New Hybrid-Electric Combat Vehicle.

Business/Technology Editors

CAMBRIDGE, Mass.--(BUSINESS WIRE)--Sept. 20, 2001

SatCon Technology Corporation(R) (Nasdaq NM: SATC), today announced that it has delivered four digital power control and conversion systems that were installed and operationally tested in the new Reconnaissance, Surveillance and Targeting Vehicle (RST-V) being developed for the U.S. Marine Corps. The SatCon digital power conversion and control systems performed to specification and provided peak power of 80kw in an extremely small footprint of roughly 12 inches wide, 24 inches long and 4 inches deep. The systems were developed under a contract previously awarded to SatCon. As a result of the testing, two additional power systems have been ordered and are due for delivery over the next few weeks.

The Reconnaissance, Surveillance and Targeting Vehicle is a hybrid electric vehicle that is light enough to be transported and dropped into place by a helicopter. It is designed to carry three or four marines over off road conditions through either desert or mountainous terrain, near to or behind enemy lines. In order to avoid detection, the vehicle uses a hybrid-electric propulsion system to avoid sound and hot exhaust signatures. The RST-V is being developed and funded by a Defense Advanced Research Project Agency (DARPA) program for the Marine Corps. (http://www.4wdonline.com/Mil/US/RSTV.html)

"Because of the nature of this new combat vehicle's mission, it has to be somewhat stealth," said David Eisenhaure, SatCon's President and Chief Executive Officer. "That means eliminating engine sounds and exhaust heat as well as designing other structural features into the vehicle. SatCon met the challenge of designing and developing a digital power conversion and control system that has to provide 80kw of peak power in a footprint that is extremely small and lightweight, while durable enough to withstand harsh operating conditions. We were very pleased to see that our digital power control and conversion systems performed well in the test of RST-V vehicles under off-road conditions. The special design characteristics and electronic packaging techniques used in the development of the RST-V power control and conversion system are based on the same proprietary technology that SatCon employs in its commercial digital power products. We are also completing the design and development of a digital power conversion and control system for commercial hybrid-electric vehicles under a $10 million dollar contract from the Department of Energy. These power modules are being designed for low-cost, high-volume manufacture and can be used in our UPS (uninterruptible power supply) and power quality products."

About SatCon Technology Corporation

SatCon Technology Corporation manufactures and sells power and energy management products for digital power markets. SatCon has three business units: SatCon Power Systems manufactures and sells power systems for distributed power generation, power quality and factory automation. SatCon Semiconductor Products manufactures and sells power chip components; power switches; RF devices; amplifiers; telecommunications electronics; and hybrid microcircuits for industrial, medical, and aerospace applications. SatCon Applied Technology develops advanced technology in digital power electronics, high-efficiency machines and control systems with the strategy of transitioning those technologies into products. For further information, please visit the SatCon website at www.satcon.com.

Statements made in this document that are not historical facts or that apply prospectively are forward-looking statements that involve risks and uncertainties. The important factors that could cause SatCon Technology Corporation's ("the company's") actual circumstances, or results, to differ materially from those implied by such forward-looking statements include the ability to successfully sell and manufacture these hybrid-electric components in quantities; developments in the company's business and industry; market conditions; and the inability to gain customer acceptance of the company's products. Additional information concerning factors that could cause actual results to differ materially from those in the forward-looking statements is contained from time to time in the company's filings including, but not limited to, the 10-K and 10-Q. Copies of those filings are available from the company and the Securities and Exchange Commission.