The price range for an outdoor energy storage cabinet typically lies between $3,000 and $15,000, depending on various factors, such as **1. additional features, and **5. However, the base model starts at $12,435 (MSRP) and can reach $40,000+ for whole-home backup setups. Prices do not include solar panel installation. Uninterrupted Power Supply: How the Generac PWRcell Revolutionized. Battery cost: Typically 50%–70% of the total. Depends on battery type (LiFePO₄ or NMC) and capacity (kWh). Additional parts: BMS, thermal control, cabinets —. In general, one can expect to pay anywhere from $2,000 to $10,000 for these cabinets, depending on the specifications and complexities involved. Why such a wide range? The biggest factor is size, measured by how many kilowatt-hours (kWh) of.