Beacon Power to Highlight Flywheel Technology and Business Model at Major Industry and Investor Events.

WILMINGTON, Mass. -- Beacon Power Corporation (NASDAQ: BCON), a company that designs and develops advanced products and services to support more stable, reliable and efficient electricity grid operation, announced plans to present or exhibit at a series of industry and investor events in the coming weeks. Each event is an opportunity for the Company to showcase its flywheel technology to attendees and to outline the value proposition of its frequency regulation services business model. The investor presentation in May will also be webcast live, enabling non-attendees to listen via the Internet.

Here is a summary of the events:

April 16 - 20

Energy 2007, Hannover Fair, Hannover Germany

For the second year in a row, Beacon Power is one of several companies exhibiting in the Massachusetts Pavilion at the Hannover Fair, one of the world's largest technology trade shows. The event is attended by more than 200,000 visitors and is a showcase for innovation and industry leadership. The costs for exhibiting are paid for by the Renewable Energy Trust of the Massachusetts Technology Collaborative (MTC). The MTC is the state's development agency for renewable energy and the innovation economy, and the Renewable Energy Trust makes investments in and supports the renewable energy industry. More information is available at www.hannovermesse.de.

April 25 - 26

Ceres Conference 2007, Boston Massachusetts

Ceres is the world's largest network of investors, environmentalists and companies united for sustainable prosperity, and one of the foremost authorities on the business impact of global warming. Its annual conference is expected to bring together 700 high-level participants including clean technology investors, CEOs, corporate directors, and national environmental leaders. Beacon Power CEO Bill Capp will speak about the Company's flywheel technology and its significant advantage in reducing greenhouse gas emissions versus conventional frequency regulation methods, as well as the sustainable, grid-stabilizing aspect of its operation. More information is available at www.ceres.org/ceres/

May 15

Merriman Curhan Ford Next-Generation Energy Conference, New York, NY

This third annual event, which draws hundreds of cleantech and alternative energy investors, showcases energy-related companies with innovative technologies and products. Beacon Power CEO Bill Capp will present the latest information on the company's progress and highlight the associated investment opportunity. The presentation will take place at 10:45 am EDT on May 15, and will be webcast live (registration via Beacon's website). More information on the conference is available at http://www.mcfco.com/home/conferences/index_NGE2007.php.

May 22 - 25

Electricity Storage Association Annual Meeting, Boston, MA

This annual event, which brings together leading experts in energy storage as well as from the government and utility sectors, will be hosted by Beacon Power this year. In addition to presenting during several conference sessions at the meeting, Beacon will also organize a tour of its Wilmington, Mass.-based facility on May 25 for many of the delegates. More information is available at www.electricitystorage.org.

About Beacon Power

Beacon Power Corporation designs and develops advanced products and services to support stable, reliable and efficient electricity grid operation. The Company's primary business strategy is to commercialize its patented flywheel energy storage technology to perform frequency regulation services on the grid. Beacon's Smart Energy Matrix, now in development following the successful conclusion of scale-power demonstrations in two states, is a prototype for a non-polluting, megawatt-level, utility-grade flywheel-based solution that would provide sustainable frequency regulation services. Beacon is a publicly traded company with its research, development and manufacturing facility in the U.S. For more information, visit www.beaconpower.com.

Safe Harbor Statements under the Private Securities Litigation Reform Act of 1995: 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 or supplying frequency regulation services on a commercial basis; limited commercial contracts for sales to date; the dependence of sales on the achievement of product development and commercialization milestones, including design modifications that may be needed following a recent malfunction that occurred while testing a prototype flywheel; the uncertainty of the political and economic climate, and the different electrical grid characteristics and requirements of any foreign countries into which Beacon hopes to sell or operate, including the uncertainty of enforcing contracts, the different market structures, 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, especially from companies that are already in the frequency regulation market; possible government regulation that would impede the ability to market products or services or affect market size; the complexity and other challenges of arranging project finance and resources for one or more frequency regulation power plants; possible product liability claims and the negative publicity which could result; any failure to protect intellectual property; retaining key executives and the possible need in the future to hire and retain key executives; the recent volatility in the stock price of companies operating in the same sector. 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.