Battery Cells: Typically 30-50% of total costs, depending on chemistry (lithium-ion vs. Balance of System (BoS): Includes inverters, wiring, and cooling systems (20-30% of costs). Installation & Labor: Varies by region and project complexity (15-25%). . However, one crucial question remains: what does it really cost to build an energy storage power station, and what factors drive those costs? This article takes a closer look at the construction cost structure of an energy storage system and the major elements that influence overall investment. . Building your own energy storage power station can incur various costs that depend on multiple factors. For a small-scale personal system, costs may start around $10,000. . Equipment Procurement Costs: Energy storage stations incur significant construction expenses when purchasing equipment for storage stations, with energy storage batteries accounting for the largest proportion (usually around 50%) of this expenditure. Energy storage power stations have become vital pillars of the renewable energy transition. Initial capital expenditure, 2.