Integrating Transmission Energy Storage System with Solar Generation: Grid Service Feasibility and Cost-Benefit Analysis

Session: Rapid-Fire Introductions by Poster PresentersDate: Tuesday, October 15, 2019 / 4:05PM - 4:35PM PDTTags: Poster / Modeling and Analysis

As energy storage becomes an increasingly important element of integrated grid planning, there is a need to analyze the feasibility of transmission-connected energy storage systems and their ability to achieve specific grid services. In 2018, the Los Angeles Department of Water and Power (LADWP) completed its initial analysis to determine the technical feasibility and cost-effectiveness of a 100 MW, four-hour Battery Energy Storage System (BESS) in compliance with California Senate Bill SB 801. As part of the initial analysis, LADWP had determined that a 100 MW, four-hour BESS paired with a 200 MW solar generating facility interconnected with high-voltage transmission would provide the most feasible and cost-effective options and therefore potentially satisfy the SB 801 requirement. The analysis concluded that the location, in proximity to multiple LADWP renewable facilities in California, would be ideal to meet bulk system requirements. This presentation describes an analysis performed by the Electric Power Research Institute (EPRI) to investigate the same question with a parallel analysis approach, using corresponding datasets supplied by LADWP. All the scenarios were modeled in EPRI’s Storage Value Estimation Tool (StorageVET®).