Generally, the cost for a complete 1 MW system can range significantly, typically falling between $200,000 and $400,000 depending on the specific configuration and capacity (measured in MWh). This investment is substantial, but it unlocks significant value. The average price of lithium-ion battery storage systems typically ranges between $250,000 to. In 2024, the average BESS installation cost per 1MW ranges from $500,000 to $1. Why such a gap? Three factors dominate: Take Texas as a case: A 1MW Tesla Megapack system cost $780,000 in 2023 but dropped to $680,000 this year. Why? Battery prices fell 14% YoY as CATL flooded the market. Prices range from $400,000 to $1.