On average, current estimates range from $150 to $1,500 per watt, reflecting the wide array of storage technologies available in the market. Battery technologies such as lithium-ion are generally at the lower end of the spectrum, while more complex systems like pumped hydro. . , 2023) and is in 2022 USD. Within the ATB Data spreadsheet, costs are separated into energy and power cost estimates, which allows capital costs to be calculated for durations other than 4 hours according to the following equation: quarter of 2021 (Q1 2021). We use a bottom-up method, accounting. . The 2024 ATB represents cost and performance for battery storage with durations of 2, 4, 6, 8, and 10 hours. It represents lithium-ion batteries (LIBs)—primarily those with nickel manganese cobalt (NMC) and lithium iron phosphate (LFP) chemistries—only at this time, with LFP becoming the primary. . To accurately reflect the changing cost of new electric power generators in the Annual Energy Outlook 2025 (AEO2025), EIA commissioned Sargent & Lundy (S&L) to evaluate the overnight capital cost and performance characteristics for 19 electric generator types. Due to the anonymous nature of the survey, we have not mentioned the names of the specific projects included in this analysis.