Beacon Power Announces That the Company's M5 Smart Power Systems Are in Distributor Inventory and Available for Installer or End User Sales.

Energy Editors/Business Editors

WILMINGTON, Mass.--(BUSINESS WIRE)--Jan. 22, 2004

Beacon Power Corporation (NASDAQ: BCON), a leader in sustainable energy storage and power conversion systems, announced that its Smart Power M5 systems are available for immediate delivery from the following distributors: Alternative Energy Engineering (www.alt-energy.com), Dankoff Solar (www.dankoffsolar.com), and Solar Depot (www.solardepot.com). This follows the successful completion of qualification testing by these distributors, as well as the product's recent UL Certification. Additional M5 units are undergoing qualification testing by other potential distributors.

"We're very pleased to announce that these distributors have decided to stock and sell our solar power conversion systems," said Bill Capp, Beacon Power President and CEO. "When we launched this business, we believed it would be successful, and every milestone we've achieved to date has been significant. The commitment from these renewable energy distributors validates our efforts and underscores the unique market advantages of our technologies."

The Smart Power M5 inverter system is designed for use in grid-connected solar power applications, and addresses the needs of customers who have concerns about the stability and reliability of the electrical grid. When the grid fails the M5 immediately converts to an independent battery back-up mode, continuing to provide power to critical loads. It is also the most compact, easy-to-install and efficient product in this category.

About Beacon Power Corporation

Beacon Power Corporation (NASDAQ: BCON) designs and develops sustainable energy storage and power conversion solutions that provide reliable electric power for the renewable energy, telecommunications, distributed generation and UPS markets. Beacon's latest product is the Smart Power M5, a 5-kilowatt power conversion system for grid-connect solar power applications. The Smart Power M5 is a UL-approved, "all-in-one" power conversion system incorporating multiple high-performance components in one unit that delivers instantaneous power in the event of a grid outage. Beacon is also known for its advanced flywheel-based Smart Energy systems, designed to provide reliable, environmentally friendly power quality solutions for electric utility transmission and distribution and other applications.

For more information call 888-938-9112, or visit www.beaconpower.com.

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

Material contained in this press release may include statements that 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. These factors include: a short operating history; a history of losses and anticipated continued losses from operations; a need to raise additional capital combined with a questionable ability to do so; conditions in target markets; no experience manufacturing any product on a commercial basis; the company has only recently entered into the renewable energy market through its inverter products, and hence, has only limited experience in this sector; no commercial contracts for sales to date; the dependence of sales on the achievement of product development and commercialization milestones; the uncertainty of the political and economic climate of any foreign countries into which Beacon hopes to sell, including the uncertainty of enforcing contracts and the potential substantial fluctuation in currency exchange rates in those countries; significant technological challenges to successfully complete product development; dependence on third-party suppliers; intense competition from companies with greater financial resources; possible government regulation that would impede the ability to market products; possible product liability claims and the negative publicity which could result; any failure to protect intellectual property; the possible need in the future to hire and retain key executives, particularly in light of the substantial workforce reductions during 2001 and 2002; the recent volatility in the stock price of companies operating in the same sector; the power of controlling shareholders and the limited ability of others to influence the outcome of matters put to the vote of shareholders. These factors are elaborated upon and other factors may be disclosed from time to time in Beacon Power Corporation's filings with the Securities and Exchange Commission. Beacon Power Corporation expressly does not undertake any duty to update forward-looking statements.