SPLTRAK Abstract Submission
Performance investigation of batteries supporting solar power in California
Farzan ZareAfifi, Daniel Baerwaldt, Socheata Hour, Yi Hao Xie, Sarah Kurtz
University of California Merced, Merced, CA, United States

Abstract—The use of batteries in energy storage power plants in California has increased significantly. A prime objective of the plants is to provide power in times of peak demand after being charged with renewable sources, mainly solar power. Modeling of solar adoption is largely dependent on understanding how solar and batteries work together, including the need to quantify the battery efficiency. In this study, the efficiency of the energy storage plants in California was calculated based on EIA data. A mathematical model is proposed relating the efficiency and the number of cycles per month, grouping plants with the same installation year. We conclude that newer plants show lower losses and higher efficiencies.