SIW represents you. As a member, you can help set the agenda for the future of solar energy in Washington. Organizations and professionals involved with solar as a commercial venture in the State of Washington are eligible for voting membership, provided they receive a majority vote of approval by the SIW Board of Directors. Solar organizations without a commercial purpose can be granted voting membership with a two-thirds vote of the Board of Directors.

With the exception of the public directory information, all the information collected in this application is private and confidential. It will only be used by our staff to better understand our membership. Only information in the "Directory Information" section will be seen by members of the public and members of Solar Installers of Washington.