CAISO updates proposed rules for demand response, energy storage
California leads the nation in distributed energy resources, but integrating those resources into the grid is not easy. On the regulatory front the integration process has resulted in a profusion of rules the CPUC is trying to tame with a DER Action Plan.
CAISO is also working toward a smoother integration of DERs. In its latest update, the agency is working toward a brighter line between station power and wholesale charging energy when it comes to energy storage.
The challenge is distinguishing between wholesale charging energy that will be resold and “station power,” which is energy consumed to operate a generator. The ISO has proposed a simpler definition that defines station power as energy used to serve a resource’s own load that is settled under a retail tariff.