The Company's Most Powerful Solar Panels to Date with Performance Ratings over 90%

Evergreen Solar, Inc. (Nasdaq: ESLR) will introduce its new American-made ES-A Series Solar Panels at its booth #1115 during Solar Power International in San Diego, October 14-16, 2008. This new line of 200, 205 and 210 W solar panels features the most powerful products Evergreen Solar has ever produced. With a -0, +5W power specification, the ES-A Series also provides the best power tolerance currently available in the industry.

The ES-A Series is a range of high quality String Ribbon(TM) solar panels offering exceptional performance, cost effective installation and industry-leading environmental credentials. With a design driven by customers, these panels feature new extended length cables that can eliminate home-run wiring, new clickable connectors that make connections between panels quick and reliable, and a new low-voltage configuration that enables the most cost-effective commercial-scale installations.

These new panels, made in the USA at the company's new flagship production facility in Devens, Massachusetts, recently received both CEC recognition and ETL Listing to the American and Canadian UL Standard 1703. The new ES-A Series panels also have a CEC approved 90.4 percent PTC/STC rating, compared with most other major brands of multi-crystalline silicon panels which have ratings under 90%.

"Our American-made ES-A Series panels further position Evergreen Solar as a leader in producing powerful, efficient, and environmentally-friendly solar panels," said Dr. Terry Bailey, Senior Vice President, Marketing and Sales. "These panels are our most powerful solar panels to date with the tightest power tolerance in the industry meaning our customers get optimal system performance right out of the box. At the same time, we are proud to lead the industry in environmental credentials with the smallest carbon footprint and the quickest energy payback available today."

All Evergreen Solar panels are constructed using proprietary, low-cost wafer manufacturing technology which is the most environmentally-friendly process in the industry with virtually no wasted silicon. The carbon footprint of these panels is up to 50% smaller than that of its competitors'. These solar panels also have the quickest energy payback, now as fast as 12 months for installed panels. And to round out the Company's leading environmental credentials, the new ES-A series also uses 100% cardboard-free packaging to minimize job site waste and disposal costs.

The new ES-A series panels are the first production using the Company's revolutionary Quad furnace which creates four silicon wafer strips that are then cut using Evergreen Solar's proprietary "Cut on the Fly" laser systems. The Company's new Quad furnace was also on display at Solar Power International. The Quad furnaces are being used for all of the company's production in its new manufacturing plant in Devens, Massachusetts which started panel production in July of this year.

About Evergreen Solar, Inc.

Evergreen Solar, Inc. develops, manufactures and markets solar power products using proprietary, low-cost manufacturing technologies. The Company's patented crystalline silicon wafer technology uses significantly less silicon than conventional approaches. Evergreen Solar's products provide reliable and environmentally clean electric power for residential and commercial applications globally. For more information about the Company, please visit www.evergreensolar.com.

Safe Harbor Statement

This press release contains forward-looking statements within the meaning of federal securities laws. Evergreen Solar cautions you that any statements contained in this press release that are not strictly historical statements constitute forward-looking statements. Such forward-looking statements include, but are not limited to, those related to: the performance, cost effective installation and industry-leading environmental credentials of the company's solar panels; the start-up and future production capacity of the company's Devens manufacturing facility; the company's ability to protect the intellectual property incorporated in String Ribbon, the company's Quad furnace and other proprietary technologies. These statements are neither promises nor guarantees, and involve risks and uncertainties that could cause actual results to differ materially from such forward-looking statements. Such risks and uncertainties are identified in the company's filings with the Securities and Exchange Commission - including the company's Annual and Quarterly Reports on Forms 10-K and 10-Q filed with the SEC (copies of which may be obtained at the SEC's website at: http://www.sec.gov) - could impact the forward-looking statements contained in this press release. Readers should not place undue reliance on any such forward-looking statements, which speak only as of the date they are made. Evergreen Solar disclaims any obligation to publicly update or revise any such statements to reflect any change in company expectations, or in events, conditions or circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ from those set forth in the forward-looking statements.

Evergreen Solar, Inc.
Chris Lawson, 508-357-2221 X7214
Director Marketing Communications
clawson@evergreensolar.com
or
Media:
Elevate Communications
Jim Connelly, 617-861-3654
Account Supervisor
jconnelly@elevatecom.com

Source: Evergreen Solar, Inc.