New Energy Storage Ratio Standard

Objectives: Review recent changes and emerging themes in the model codes. Discuss challenges associated with performance-based codes—and potential solutions. Develop a preliminary understanding of how energy codes can address new. technologies enabling grid-interactive efficient buildings (GEB).

This report describes development of an effort to assess Battery Energy Storage System (BESS) performance that the U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) and others can employ to evaluate performance of deployed BESS or solar photovoltaic (PV) +BESS systems.

After solid growth in 2022, battery energy storage investment is expected to hit another record high and exceed USD 35 billion in 2023, based on the existing pipeline of projects and new capacity targets set by governments.

New energy storage standards necessitate adherence to specific requirements, including 1. rigorous performance metrics, 2. safety protocols to mitigate risks, and 3. environmental impact assessments. An in-depth understanding of the performance metrics is crucial, as they determine the reliability and efficacy of energy storage systems.

An energy storage facility can be characterized by its maximum instantaneous power, measured in megawatts (MW); its energy storage capacity, measured in megawatt-hours (MWh); and its round-trip eficiency (RTE), measured as the fraction of energy used for charging storage.

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6 FAQs about [New Energy Storage Ratio Standard]

Does industry need standards for energy storage?

As cited in the DOE OE ES Program Plan, “Industry requires specifications of standards for characterizing the performance of energy storage under grid conditions and for modeling behavior. Discussions with industry pro-fessionals indicate a significant need for standards ...” [1, p. 30].

Are energy storage codes & standards needed?

Discussions with industry professionals indicate a significant need for standards …” [1, p. 30]. Under this strategic driver, a portion of DOE-funded energy storage research and development (R&D) is directed to actively work with industry to fill energy storage Codes & Standards (C&S) gaps.

What are base year costs for utility-scale battery energy storage systems?

Base year costs for utility-scale battery energy storage systems (BESS) are based on a bottom-up cost model using the data and methodology for utility-scale BESS in (Ramasamy et al., 2022). The bottom-up BESS model accounts for major components, including the LIB pack, the inverter, and the balance of system (BOS) needed for the installation.

How is energy storage capacity calculated?

The energy storage capacity, E, is calculated using the efficiency calculated above to represent energy losses in the BESS itself. This is an approximation since actual battery efficiency will depend on operating parameters such as charge/discharge rate (Amps) and temperature.

What does E/P mean in a Lib energy storage system?

Commercial and Industrial LIB Energy Storage Systems: 2019 Model Inputs and Assumptions (2019 USD) Battery capacity is in kW DC. E/P is battery energy to power ratio and is synonymous with storage duration in hours. We also consider the installation of commercial and industrial PV systems combined with BESS (PV+BESS) systems (Figure 1).

Are new battery technologies a risk to energy storage systems?

While modern battery technologies, including lithium ion (Li-ion), increase the technical and economic viability of grid energy storage, they also present new or unknown risks to managing the safety of energy storage systems (ESS). This article focuses on the particular challenges presented by newer battery technologies.

New Energy Storage Ratio Standard