Evergreen Solar Extends Materials & Workmanship Warranty to 10 Years

Warranty doubles the existing 5 year warranty on ES-A and ES-E series panels.

Evergreen Solar, Inc. (NasdaqGM: ESLR), a manufacturer of String Ribbon(R) solar panels with its proprietary silicon wafer technology, today announced it will extend its Materials & Workmanship Warranty on its ES-A and ES-E solar panels to 10 years. The new warranty doubles the existing five-year warranty and is valid for first end-user purchases of both the ES-A and ES-E products on or after January 1, 2011.


The warranty extension comes as a result of a successful quality improvement program that was first implemented by Evergreen Solar more than two years ago. The quality improvement initiative incorporates a reliability improvement program designed to address all aspects of our product life cycle by implementing more robust product safety, reliability monitoring and supplier quality management programs.

"In keeping with our brand promise of delivering more electricity with less impact on the environment, our product development team consistently explores ways to improve the end product that Evergreen Solar delivers to its customers," said Peter Rusch, Evergreen Solar's vice president of global sales. "Our products have consistently delivered superior field performance and combined with our enhanced quality improvement program this translates to being able to back our impressive quality record with a much improved product warranty for our customers."

About Evergreen Solar, Inc.

Evergreen Solar, Inc. develops, manufactures and markets String Ribbon(R) 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(R) and String Ribbon(R) are registered trademarks of Evergreen Solar, Inc.

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