Evergreen Solar Panels Used in 250 Kilowatt Installation at DuPont Research Facility in Hawaii

One-acre, 1,500 solar panel array at Pioneer Hi-Bred Waimea Research Center in Kauai, Hawaii is DuPonts largest solar installation to date

MARLBORO, Mass.--(BUSINESS WIRE)-- Evergreen Solar, Inc. (Nasdaq: ESLR), a manufacturer of STRING RIBBON' solar power products with its proprietary, low-cost silicon wafer manufacturing technology, announced today that a new 250 kilowatt solar energy power plant using its solar panels is now operational at DuPont's Pioneer Hi-Bred Waimea Research Center in Kauai, Hawaii. The solar installation is DuPont's largest and will supply 85 percent of the overall energy for the Research Center.

The installation contains 1,500 Evergreen Solar panels and occupies an area of one acre. It will generate enough energy each year to power approximately 64 average-sized homes. By generating renewable energy, the facility will offset carbon dioxide emissions equivalent to removing 100 cars from the road annually. DuPont expects to save approximately $200,000 per year in offset energy costs.

"This is a significant solar installation for DuPont and clearly demonstrates their commitment to renewable energy and sustainability not only as a leader in solar power usage but as a key materials and technology supplier to the photovoltaics industry," said Terry Bailey, Evergreen Solar's senior vice president of sales and marketing. "DuPont's choice to use Evergreen Solar's panels will not only show immediate results in performance but will also help DuPont accomplish its carbon goals since our panels have both the smallest carbon footprint and the quickest energy payback of any manufacturer in the business."

This is the second solar installation by DuPont to use Evergreen Solar panels, the first of which is located at DuPont's headquarters in Wilmington, Delaware.

About Evergreen Solar, Inc.

Evergreen Solar, Inc. develops, manufactures and markets STRING RIBBON' solar power products using its proprietary, low-cost 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.

Safe Harbor Statement

This press release contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 21E of the Securities Exchange Act of 1934. 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. Evergreen Solar disclaims any obligation to publicly update or revise any such statements to reflect any change in 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.

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