![]() utility-scale LIB storage costs for durations of 2–10 hours (60 MW DC) in $/kW Scenario Descriptionsīattery cost and performance projections in the 2021 ATB are based on a literature review of 13 sources published in 2018 or 2019, as described by Cole et al. ![]() utility-scale LIB storage costs for durations of 2–10 hours (60 MW DC) in $/kWhĮPC: engineering, procurement, and constructionįigure 2. This inverse behavior is observed for all energy storage technologies and highlights the importance of distinguishing the two types of battery capacity when discussing the cost of energy storage.įigure 1. Current installed capital costs for BESS in terms of $/kWh decrease with duration, and costs in $/kW increase. Using the detailed NREL cost models for LIB, we develop current costs for a 60-MW BESS with storage durations of 2, 4, 6, 8, and 10 hours, shown in terms of energy capacity ($/kWh) and power capacity ($/kW) in Figure 1 and Figure 2 respectively. The bottom-up BESS model accounts for major components, including the LIB pack, inverter, and the balance of system (BOS) needed for the installation. Though these changes are small, we recommend using the data presented here in the ATB rather than what was previously published with the Storage Futures Study.Ĭurrent 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 (Feldman et al., 2021). We would note though that, during the elapsed time between the calculations for the Storage Futures Study and the ATB release, updated values have been calculated as more underlying data have been collected. The costs presented here (and for distributed residential storage and distributed commercial storage) are based on this work. This work incorporates current battery costs and breakdowns from (Feldman et al., 2021), which works from a bottom-up cost model. The NREL Storage Futures Study has examined energy storage costs broadly and specifically the cost and performance of lithium-ion batteries (LIBs) (Augustine and Blair, 2021). There are a variety of other commercial and emerging energy storage technologies as costs are well characterized, they will be added to the ATB. It represents lithium-ion batteries only at this time. The 2021 ATB represents cost and performance for battery storage across a range of durations (2–10 hours).
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