The cost of a 50kW battery storage system varies based on components and configurations. Here's a breakdown of estimated costs: Total Estimated Cost: $245,000 – $315,000 Reference: BloombergNEF. “Battery Pack Prices Fall as Market Ramps Up with Market Average at $132/kWh in. . Buyers typically see a wide price range for a 50kW solar installation, driven by equipment quality, mounting type, and interconnection requirements. Costs include system price. . USDA REAP (Rural Energy for America Program) For rural communities and utilities, REAP offers up to 50% grants and loan guarantees for renewable energy projects, including solar and battery storage. ” [pdf] As. . The term 50 kW solar plant cost refers to the total investment required to build a solar power system with a 50 kilowatt capacity. Investors also factor in energy output and payback period. . When supplied with an energy storage system (ESS), that ESS is comprised of 80 pad-mounted lithium-ion battery cabinets, each with an energy storage capacity of 3 MWh for a total of 240 MWh of storage. NLR's PV cost benchmarking work uses a bottom-up. .