PG&E said the California Self-Generation Incentive Programme (SGIP), which supports energy storage deployments as well as solar and other eligible technologies with cash rebates for customers, has helped this along. In addition to 1,400MW of energy storage the utility has now contracted in its service area to commission and connect by the end of 2023, there are also “hundreds to thousands” of new behind-the-meter (BTM) customer-sited systems being connected to PG&E’s grid each month, with 19,000 systems totalling more than 230MW of capacity already connected, mostly residential.
PG&E responded by procuring more than 800MW in total, around half of which would come online by the earlier date and another 387MW for which it requested approval from CPUC in December last year. The CPUC also instructed the investor-owned utilities to procure more energy storage to meet their reliability requirements in late 2019, including an authorisation for PG&E to procure 716.9MW or more of system reliability resources that should go online between August 2021 and August 2023. According to CPUC figures, PG&E finished up with 752.5MW of transmission storage, including two of the largest battery projects in the world, both at the former Moss Landing gas power plant site, as well as 41.5MW of distribution-level storage and 50.1MW of customer-sited, behind-the-meter storage. PG&E’s share of that was 580MW including transmission-connected storage and a small portion of distributed and customer-sited energy storage. Through AB2514, the California Public Utilities Commission (CPUC) instructed the trio to contract for 1.35GW of storage across their service areas by the end of 2020. The utility is “well-positioned with the battery storage projects under contract to meet the state’s ambitious clean energy and storage goals, while ensuring grid reliability,” in a press release yesterday.Īs with the other two California investor-owned utilities, Southern California Edison (SCE) and San Diego Gas & Electric (SDG&E), PG&E’s ongoing wave of energy storage investment was begun with what is thought to have been the world’s first major mandated utility procurements of advanced storage, Assembly Bill 2514 (AB2514). PG&E said that its investments in battery storage will be an important factor in integrating renewable energy onto its grid while enhancing reliability and keeping electricity costs down for customers. Under the RPS, the 33% mandated goal rises to 50% by 2030 and to 100% by 2045. PG&E said that more than 88% of electricity used by its customers came from emissions-free resources, including nuclear and hydroelectric power as well as solar, wind, bioenergy and geothermal. California Renewable Portfolio Standard (RPS) goals required energy providers to deliver 33% renewables by the end of last year. The utility said yesterday that according to estimates included in its latest 10k filing to the Securities and Exchange Commission (SEC), it met more than 35% of customer demand for energy from renewable energy resources in 2020. Pacific Gas & Electric (PG&E), one of California’s three main investor-owned utilities, has said that 1,400MW of battery storage to be deployed in its service area by the end of 2023 will keep the company on-track to meet statewide renewable energy goals “while ensuring grid reliability”.
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