A decade of $/kWh economics for utility-scale battery storage — cells, the electricity that builds them, and the permitting gauntlet that gates them. The story is one of collapsing hardware and hardening soft costs.
Cell chemistry has been the tracker's biggest deflator. LFP's takeover of stationary storage, gigafactory overbuild in China, and a collapse in lithium carbonate off the 2022 peak have cut hardware costs by more than 80% in a decade.
Manufacturing energy is a small slice but a volatile one. Costs whip on grid gas prices and Chinese coal policy — the 2022 spike alone added roughly $12/kWh before easing as renewables absorbed factory load.
The stubborn line on the chart. Interconnection queues have grown roughly 8× since 2018, environmental review timelines have doubled in key US markets, and AHJ fire code updates keep adding scope. Soft costs are now a larger share than the cells themselves.
| Year | Inputs | Electricity | Permitting | Trend | Total |
|---|---|---|---|---|---|
| 2026 | $132 | $31 | $205 | $368 | |
| 2025 | $148 | $33 | $192 | $373 | |
| 2024 | $175 | $36 | $178 | $389 | |
| 2023 | $235 | $41 | $165 | $441 | |
| 2022 | $285 | $46 | $148 | $479 | |
| 2021 | $240 | $34 | $132 | $406 | |
| 2020 | $260 | $31 | $118 | $409 | |
| 2019 | $320 | $33 | $108 | $461 | |
| 2018 | $405 | $35 | $101 | $541 | |
| 2017 | $520 | $38 | $96 | $654 | |
| 2016 | $660 | $40 | $92 | $792 | |
| 2015 | $780 | $42 | $95 | $917 |