Welcome to the WSEC Commercial Technical Support Website
This website provides helpful technical resources and supports the process of demonstrating compliance with the Washington State Energy Code (WSEC) Commercial Provisions. Features and resources available include an energy code documents portal, compliance documentation forms, searchable frequently asked questions feature and one-on-one technical support.
Compliance with the Energy Code is required throughout WA State for all new construction, additions and retrofit projects. When submitting your project for a building, electrical or mechanical permit, information required includes the Code provisions that apply to the project and the design measures taken to comply with these provisions. Select the Jurisdiction Information icon for specific information about each jurisdiction.