Purchasing and installing a commercial energy storage system can represent an investment of several 100,000 euros. The exact costs of a specific project cannot be generalized in advance. Operational and maintenance expenses, 3. By the end of 2018, some 120,000 households and commercial. . Following a brief interruption due to global supply chain problems, the downward trend in battery prices continued in 2023, reaching a record low of US$139 per kWh. Initial investment varies significantly based on the scale of the project, ranging from thousands to millions of dollars. For a small-scale personal system, costs may start around $10,000. . How much does it cost to develop an energy storage power station? To develop an energy storage power station, costs vary significantly influenced by several factors.