Marlborough-based Evergreen Solar has signed a 10-year supply agreement with a French firm called Silicium de Provence SAS, or Silpro.
Silpro will provide Evergreen Solar with 100 percent of the silicon the company needs to meet its ambitious sales goal of more than 1 gigawatt of solar panels from 2008 to 2012. Silicon is used in the production of solar panels.
Silpro is expected to begin shipments in mid-2010.
Evergreen Solar has about 320 employees based in Central Massachusetts. The company is building a $199 million new headquarters in Devens that is expected to be completed next year.
