Page Content Energy Northwest is pleased to work with contractors and vendors throughout the United States. Businesses wishing to provide products and services to Energy Northwest are required to comply with the following general provisions; and must be registered to work in the state of Washington. Terms and Conditions General Provisions for Consulting and Technical Services (PDF Format) General Provisions for Work – Columbia Generating Station (PDF Format) General Provisions for Work – Energy Services & Development (PDF Format) General Provisions for Purchase Orders (PDF Format) Prevailing Wages As a municipal corporation and joint operating agency of the state of Washington, all work for Energy Northwest is subject to prevailing wages in accordance with RCW 39.12. Prevailing wage information: Labor & Industries Washington State Public Records Act (RCW 42.56)Information submitted to Energy Northwest becomes public record. Without exception by the presenting party, the information is subject to public disclosure pursuant to the Washington State Public Records Act RCW 42.56. Washington State Sales Tax Energy Northwest is responsible for collecting and remitting sales tax to the Washington State Department of Revenue.