On June 21, 2023, the Interstate Renewable Energy Council released its Freeing the Grid interconnection grades, which grade each state in the nation (as well as Washington, DC, and Puerto Rico) on the quality of its interconnection policies. These policies govern how distributed energy resources (DERs) — such as solar and energy storage systems — can safely and reliably connect to the distribution grid. Freeing the Grid is a joint initiative of the Interstate Renewable Energy Council (IREC) and Vote Solar that grades states on key policies that help to increase clean energy adoption and access to the grid.
The grades are based on 10 categories of criteria reflecting key considerations to ensure interconnection policies support rather than hinder clean energy market growth; these criteria include cost, efficiency, transparency and the technologies eligible to interconnect. Of the 39 states and territories that have statewide interconnection procedures, only one state, New Mexico, received an A for its interconnection rules. An additional six states (Arizona, California, the District of Columbia, Illinois, Michigan and New York) received Bs. The remaining states received a C grade or lower. Another 13 states have not adopted statewide interconnection rules and received “F” grades (Alabama, Alaska, Arkansas, Georgia, Idaho, Kansas, Louisiana, Missouri, Nebraska, North Dakota, Oklahoma, Tennessee and Wyoming).