For SGIP, marginal grid emissions are reported by balancing authority and independent system operator subregion. These grid regions represent the entity which controls grid operation within that territory. CAISO is the largest balancing authority within California and includes three subregions, the Default Load Aggregation Points (DLAPs), where marginal emissions are reported. Outside of CAISO, each subregion included in the API is a balancing authority. Utilities that are not directly listed fall into one of the outlined grid regions. To identify the grid region a project is located in, please use the second table on this page which lists the grid region for each electric utility.
To identify which grid region a project is located in, please refer to the following table, which indicates the grid region of each electric utility in California. Projects served by Community Choice Aggregators should use the grid region of the IOU they are located in.