According to BloombergNEF's annual survey, battery prices in 2025 remained at $108 per kilowatt-hour, an eight percent decrease. . The suite of publications demonstrates wide variation in projected cost reductions for battery storage over time. Figure ES-1 shows the suite of projected cost reductions (on a normalized basis) collected from the literature (shown in gray) as well as the low, mid, and high cost projections. . A new analysis from energy think tank Ember shows that utility-scale battery storage costs have fallen to $65 per megawatt-hour (MWh) as of October 2025 in markets outside China and the US. At that level, pairing solar with batteries to deliver power when it's needed is now economically viable. BloombergNEF expects the. . The cost of four-hour lithium-ion (Li-ion) battery systems could decline from $334/kWh in 2024 to as low as $108/kWh or remain as high as $307/kWh by 2050, according to the National Renewable Energy Laboratory (NREL). Cheaper. . As of most recent estimates, the cost of a BESS by MW is between $200,000 and $420,000, varying by location, system size, and market conditions. Key Factors Influencing BESS. .
