Battery hardware has never been cheaper. Whether a commercial battery pays back still comes down to three things the hardware price does not tell you: your demand charges, the program revenue available where you are, and how much of the federal credit you can use.
BloombergNEF put the 2025 global average turnkey price of a battery storage system at $117 per kWh, but the US average was $219 per kWh, and a behind-the-meter commercial project costs more again once engineering, switchgear, fire protection, interconnection, and installation are included. ROI depends mostly on revenue: demand charge savings alone rarely carry a battery, while in Massachusetts the ConnectedSolutions daily dispatch rate of $200 per kW can. Standalone storage still qualifies for the Section 48E credit, is not subject to the 2027 solar and wind cutoff, and is 5-year MACRS property, but foreign-entity sourcing rules now apply.
What commercial battery storage costs
There is no single "price of a battery." Published figures measure different things, and the gap between them is where most budgeting mistakes start. Three public benchmarks are worth knowing.
| Source | Figure | What it measures |
|---|---|---|
| BloombergNEF, Energy Storage System Cost Survey 2025 | $117/kWh global average; $219/kWh US average; $110/kWh for 4-hour and $124/kWh for 2-hour systems globally | Turnkey system price, largely utility-scale, excluding grid connection and EPC scope. Down 31 percent from 2024 |
| NREL, Annual Technology Baseline 2024, Commercial Battery Storage | Energy-related cost component of $199/kWh and power-related cost of $97.5/kW for a 600 kW, 4-hour system (2022 dollars); 85 percent round-trip efficiency; 15-year life; fixed O&M at 2.5 percent of capital cost per year | Bottom-up modeled cost of a commercial system, which adds balance of system and soft costs on top of these components |
| LBNL, Utility-Scale Solar 2025 Data Update | $458/kWh average battery cost in 2024 for utility PV-plus-storage projects with component data, up from $381/kWh in 2023 | Reported battery costs in US hybrid plants, as larger batteries were added |
Read together, the figures say that cell and module prices have fallen sharply, that the US pays substantially more than the global average, and that installed project cost is well above turnkey equipment price. A commercial behind-the-meter battery of a few hundred kWh to a few MWh does not enjoy utility-scale economies. It also carries costs that a turnkey number leaves out: site-specific engineering, a switchgear tie-in, controls integration with your meter and any solar, fire code compliance and permitting, utility interconnection, and in some cases a building or pad.
Duration also matters. Power-related costs (inverters, transformers, switchgear) scale with kW, and energy-related costs scale with kWh, so a 2-hour battery costs more per kWh than a 4-hour battery of the same power. That is why comparing quotes on $/kWh alone can mislead. Ask for both $/kW and $/kWh, and for the usable capacity at the point of interconnection rather than the nameplate.