Evergreen Solar Signs Contract Manufacturing Agreement with Jiawei Solar

Wuhan Government to Provide $33 Million for Evergreen Solar`s 100 MW Wafer
Manufacturing Plant

MARLBORO, Mass. & WUHAN, China--(Business Wire)--
Evergreen Solar, Inc. (NasdaqGM: ESLR), a manufacturer of String Ribbon solar
power products with its proprietary, low-cost silicon wafer technology, today
announced it has finalized its agreements with Jiawei Solarchina Co., Ltd., and
the Wuhan Government`s Hubei Science & Technology Investment Co., Ltd.
("HSTIC"). Under these agreements:

* Evergreen Solar will manufacture String Ribbon wafers using its
state-of-the-art Quad furnaces at a leased facility being built by Jiawei in
Wuhan, China on Jiawei`s campus.
* Jiawei will convert the String Ribbon wafers into Evergreen Solar-branded
panels on a contract manufacturing basis.
* Evergreen Solar will reimburse Jiawei for its cell and panel conversion costs,
plus a contract manufacturing fee. The actual price paid to Jiawei will be
negotiated annually.
* Evergreen Solar will invest $17 million in cash and equipment in the Wuhan
String Ribbon operation. HSTIC will provide Evergreen Solar $33 million of 7.5%
financing, which Evergreen Solar must repay no later than July 2014. Jiawei will
make a similar investment for its cell and panel operations with the support of
HSTIC.
* Initial capacity will be approximately 100 MW. Factory construction has begun
and the parties expect that wafer, cell and panel production will begin in the
spring of 2010.
* The parties intend to expand production capacity of their respective
manufacturing operations to approximately 500 MW by 2012, the timing and extent
of any potential expansion will be determined in 2010.
* Evergreen Solar and Dynamic Green Energy, Ltd, Jiawei`s parent company, have
agreed to exchange warrants representing 1% of their outstanding shares. These
warrants will have a five-year term and may be exercised for 20% of the warrant
shares for each incremental 95 MW of production capacity achieved.

"Our String Ribbon wafer technology, combined with Jiawei`s low-cost
manufacturing capabilities, should enable our products to stand out distinctly
among customers seeking both value and dependability for their solar energy
solutions," commented Richard M. Feldt, Chairman, President and CEO. "As we
reach the 25 MW quarterly capacity by the end of 2010, we expect total
manufacturing costs of our String Ribbon panels produced in China to be in the
range of $1.40 per watt to $1.50 per watt with both companies working
aggressively to further improve technological performance as well as reduce
manufacturing costs. Our mutual goal is to drive conversion efficiency and
manufacturing performance so that panels are produced at the $1.00 per watt
level by no later than 2012."

About Evergreen Solar, Inc.

Evergreen Solar, Inc. develops, manufactures and markets String Ribbon solar
power products using its proprietary, low-cost silicon wafer technology. The
Company's patented wafer manufacturing technology uses significantly less
polysilicon than conventional processes. 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. Evergreen Solar and String Ribbon are trademarks of
Evergreen Solar, Inc.

About Jiawei Solarchina Co., Ltd. Inc.

Jiawei Solarchina Co., Ltd. Inc., through its subsidiary Jiawei Solar (Wuhan)
Co. Ltd., is a fully integrated manufacturer of solar products serving OEM and
ODM customers around the world, including SunPower Corporation. Jiawei offers
its global customers high-performance solar products for a broad range of
applications including residential and commercial end-users for off-grid and
on-grid applications. The Company is dedicated to providing its world-class
customer base with innovation, manufacturing excellence and superior product
quality. For more information about Jiawei Solar, please visit
www.solarchina.com.hk.

About Hubei Science & Technology Investment Co., Ltd.

Hubei Science & Technology Investment Co., Ltd. ("HSTIC") is a state owned
investment company focusing on science and technology development with
registered capital of approximately 2.8 billion of RMB ($410M USD). HSTIC is
composed of the Administrative Committee of Wuhan East Lake High-Tech
Development Zone and its holding company, Optics Valley Investment Company,
Hi-Tech Productivity Enhancement Center and Overseas Scholar Incubation Company.
The Hubei state government and Wuhan city government have announced HSTIC will
manage 10 billion RMB funded by the National Development Bank to develop central
China. According to Hubei state government`s planning, 6 billion of RMB will be
dedicated to Wuhan East Lake High-Tech Development Zone.

Safe Harbor Statement

This press release contains forward-looking statements made pursuant to the safe
harbor provisions of Section 21E of the Securities Exchange Act of 1934. These
statements are based on management`s current expectations or beliefs. Such
forward-looking statements include, but are not limited to, those related to the
establishment of an Evergreen Solar wafer manufacturing facility in China, the
future manufacturing capacity from the Evergreen Solar and Jiawei operations and
manufacturing costs of Evergreen Solar`s products. 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,
including risks associated with: the company`s ability to manufacture its wafers
in China; Jiawei`s ability to convert those wafers into cells and panels; the
company`s ability to sell all of the solar panels it is required to purchase
from Jiawei; various economic factors such as credit market conditions that may
impact future expansion of operations or the market for solar power products;
and other risks and uncertainties identified in the company`s filings with the
Securities and Exchange Commission. Evergreen Solar disclaims any obligation to
update or revise such statements for any reason.

Evergreen Solar, Inc.
Michael McCarthy, 508-251-3261
Director - Investor Relations
mmccarthy@evergreensolar.com

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