California has more distributed energy resources (DERs) than any other state, pressuring it to find ways to integrate them into the grid. The interconnection rules that tell developers of rooftop solar, behind-the-meter batteries and electric vehicle chargers how much time and money they’ll need to spend to get them grid-connected — or whether they’re even allowed — are a big part of that integration puzzle.
Last week, the California Public Utility Commission approved revisions (PDF) to Rule 21, which sets interconnection policies for everything from net-metered solar to large-scale generators, that could allow DERs to play a more active role on the California grid, depending on how they’re implemented.
