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California's energy storage ecosystem, built since Assembly Bill 2514 and through 2021, includes a crucial component: the PU's Energy Storage Procurement Framework. This framework motivates the development of both demand and supply in the energy storage marketplace.
The PU's Energy Storage Procurement Framework provides crucial motivation to the development of both demand and supply in this marketplace. Since the time of Assembly Bill 2514 and through 2021 California built a rich ecosystem for energy storage research and development, commercialization, and project deployment.
This work has been developed and published by Lumen Energy Strategy, LLC in Oakland, California under commission by the California Public Utilities Commission.
You can find the California Public Utilities Commission Energy Storage Procurement Study at The study was prepared by Lumen Energy Strategy, LLC for the California Public Utilities Commission and was released on May 31, 2023.
To achieve a high utilization rate of RE, this study proposes an ES capacity planning method based on the ES absorption curve. The main focus was on the two mainstream technologies of short-term and long-term storage currently available: battery energy storage (BES) and pumped hydro storage (PHS).
Capacity planning involves determining the optimal scale of storage systems to achieve the highest RE utilization rates at relatively low costs. This requires comprehensive consideration of factors such as RE generation, load demands, storage technology characteristics, and economics [,, ].
To achieve RE integration goals, strategic ES capacity planning is crucial. Capacity planning involves determining the optimal scale of storage systems to achieve the highest RE utilization rates at relatively low costs.
Case studies on different RE penetration rates show that if the configured storage capacity exceeds a certain threshold, using this threshold capacity as a planning indicator is feasible. Although this method may slightly reduce the utilization rate of RE, it can achieve significant cost savings.
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