Washington

Washington State Solar Policy Resources

• DSIRE Incentives Database – Washington – Search a public clearinghouse for specific solar energy incentives in Washington and across the United States

• Solar Panel Cost in Washington – Learn about the history of solar policy in Washington, along with up-to-date pricing information on EnergySage

• Solar Rebates & Incentives in Washington – Check out EnergySage’s list of key solar incentives in Washington to see what programs you can benefit from

• U.S. Energy Information Administration – Washington State Profile – Explore official energy statistics, including data on electricity supply and demand, from the U.S. government

• Washington State Energy Office

• Washington State Legislature – Track pending legislation affecting solar energy, locate and contact individual legislators, and stay up to date on current legislative issues in Washington

• Washington Solar Panels Overview – Learn about the history of solar policy in Washington, along with up-to-date pricing information on EnergySage

• Washington Utilities and Transportation Commission – Learn about the governing body that regulates the electricity rates and services of Washington public utilities

Washington Energy Storage Policy and Market Overview

The energy storage market in Washington is steadily growing with state-sponsored initiatives, funding, and demonstration programs leading deployment across all sectors.

The Washington Clean Energy Fund is making significant strides supporting energy storage. The demonstration program provides capital and grants to deploy renewable energy projects. Significantly, the program provided $14.3 million in funding for the first grid-scale battery storage projects in the state. The fund offers many streams of funding supporting standalone and solar-plus-storage deployment in commercial, residential, and overburdened community sectors.

State legislation and regulation are streamlining storage growth. In 2017, the PUC of Washington ordered that electric utilities consider energy storage in IRPs, and that storage is equitably considered in interconnection procedures. In 2023, the state further reduced market barriers and passed HB 1756, enacting property tax exemptions for energy storage.

Washington State Energy Storage Policy Resources

• Washington Clean Energy Fund – Funding and programs for the deployment and demonstration of renewable energy, grid modernization, building efficiency, R&D, and more.
• Solar Plus Storage for Resilient Communities – Funding opportunities supporting technical assistance for hybrid solar-plus-storage installations for community properties.
• Washington State Department of Commerce –Federal and state funding opportunities, grants, and loan programs for energy and electricity projects.
• Pacific Northwest National Laboratories Energy Storage Policy Database – Map of Procurement, Regulatory, Demonstration, Incentive, and Interconnection policies in Washington and across the United States.
• DSIRE Washington Energy Storage Policy Database – Clearinghouse for financial incentives, regulations, and rebates for energy storage and lithium-ion technologies in Washington and across the United States.
• Energy Storage Cost in Washington State – Up-to-date storage and solar-plus-storage pricing and find installers in Washington state on EnergySage.
• Washington Utilities and Transportation Committee – Governing body that regulates the electricity rates and services of Washington public utilities, search for regulatory dockets, programs, and initiatives.
• Washington State Legislature – Pending, passed, and historical legislation affecting energy storage and battery systems, locate and contact individual legislators, and stay up to date on current legislative issues in Washington