"We are very pleased to have one of Beacon Power's 6 kWh demonstration units installed on WinDBreak Cable's system. We believe in their technology," said William D. (Bill) Bauer, president and CEO of WinDBreak. "Three years ago, WinDBreak Cable provided the first test site for an experimental Beacon Power flywheel. Since then, we have worked with their engineers to enhance their units. Our temperature extremes can range from over 100 degrees Fahrenheit on a summer day to prolonged winter temperatures as low as 10 to 15 degrees Fahrenheit below zero. A major benefit of the Beacon Power flywheel technology is its reliability under extreme conditions like these. In addition, flywheels eliminate the expensive and time-consuming maintenance required by battery backup systems. Flywheels should last for decades, not just years." WinDBreak Cable uses the Beacon Power flywheel energy storage systems to ensure steady, uninterrupted electric power for cable TV and high speed Internet services for its customers.

"We are pleased to be expanding our technology relationship with WinDBreak Cable. Bill Bauer is one of the pioneers of the cable industry. As one of our first customers, WinDBreak Cable embodies the commitment to excellence in customer service that is aided by our technology," stated Bill Capp, president and CEO of Beacon Power. "These 6kWh flywheels are well suited for the cable television market as cable companies upgrade their networks with the latest video and data services."

WinDBreak Cable is one of three companies under the direction of Bauer. His InterTECH Corporation, operates two systems in Colorado, where it delivers high speed data transmission both via a two-way satellite feed and a one-way delivery with land-base data return. InterTECH also provides a Customer Help Desk, technical support, Internet backup and connectivity management services to WinDBreak Cable.

WinDBreak Cable is a member of Cable Television Laboratories, Inc., also known as CableLabs(R), a non-profit research and development consortium of cable television system operators in North and South America. CableLabs plays an integral research and development role in the telecommunications arena, acts as a clearinghouse for information on current and prospective technological developments in the cable industry. Bauer has chaired the high-speed data working group for CableLabs, and has been active in many of the working groups and committees.

Bauer is also a member of the Society of Cable Telecommunication Engineers (SCTE) and recently served on the program sub-committee of its Cable-Tec Expo 2000. SCTE is a nonprofit professional association, founded in 1969, that is dedicated to advancing the careers and serving the industry of telecommunications professionals by providing technical training, certification and standards. Today, more than 16,000 engineers, technical professionals, installers, and managers depend upon SCTE to deliver the tools they need to maintain their competitive edge.

For more information, please contact Tom Nealon, Director of Investor Relations at Beacon Power Corporation, 978.694.9121; fax 978.694.9127; email nealon@beaconpower.com; or write to 234 Ballardvale Street, Wilmington, MA 01887. Visit Beacon Power on the Internet at www.beaconpower.com

Safe Harbor Statements under the Private Securities Litigation Reform Act of 1995:

Material contained in this press release may include statements, which are not historical facts and are considered "forward-looking" within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements reflect Beacon Power Corporation's current views about future events and financial performances. These forward-looking statements are identified by the use of terms and phrases such as "believe," "expect," "plan," "anticipate," and similar expressions identifying forward-looking statements. Investors should not rely on forward-looking statements because they are subject to a variety of risks, uncertainties, and other factors that could cause actual results to differ materially from Beacon Power Corporation's expectation, and Beacon Power Corporation expressly does not undertake any duty to update forward-looking statements. These factors include Beacon Power Corporation's performance under its agreements with WinDBreak Cable; Beacon Power Corporation's short operating history, its history of losses and anticipated continued losses from operations, its limited experience manufacturing Flywheel Energy Storage Systems on a commercial basis including the fact that no commercial contracts have been executed to date the dependence of Beacon Power Corporation's sales on the achievement of product development and commercialization milestones, the adverse effect of the uncertainty of the political and economic climate of any foreign countries into which Beacon Power Corporation sells, including the uncertainly of enforcing contracts in those countries and the potential substantial fluctuation in currency exchange rates, significant technological challenges including the risk of successfully developing the 6kWh Flywheel Energy Storage Systems or it's successors as well as the commercial viability of flywheel products Beacon Power Corporation's dependence on third-party suppliers for key component parts, intense competition from companies with greater financial resources than Beacon Power Corporation, the risk that government regulation may impede Beacon Power Corporation's ability to market its products, possible product liability claims that may or may not result from safety failures of Beacon Power Corporation's flywheels and the negative publicity which could result, any failure to protect Beacon Power Corporation's intellectual property, any failure to hire and retain key executives, the lack of availability of additional financing, the recent volatility in the stock price of companies operating in the same sector as Beacon Power Corporation, control by Beacon Power Corporation's controlling shareholders and the limited ability of other investors to influence the outcome of matters requiring shareholder approval, conditions in the communications industry that comprises Beacon Power Corporation's initial target market, but are not limited to, factors detailed from time to time in Beacon Power Corporation's filings with the Securities and Exchange Commission.