Energy · Grid Storage
Grid Battery Storage
The missing piece of the renewable grid: cumulative deployed capacity going near-vertical.
- Doubles roughly every year
- Direct result of battery cost collapse
- Estimates vary by 10%+ across sources
- ~630 GWh deployed by end 2025
Stationary battery storage (lithium-ion systems on the grid plus commercial and residential installations) grew from a few hundred MWh in 2013 to roughly 630 GWh cumulative by end of 2025, doubling about every year of late. This is the curve that makes renewable energy dispatchable: solar and wind generate power intermittently, but batteries store it for when the grid needs it. The acceleration post-2020 is the direct consequence of battery cost collapse, the same technology learning curve visible in the EV sales data, now applied to grid infrastructure. One honest caveat on the numbers: no single body publishes a clean cumulative energy (GWh) series, so this stitches figures from BloombergNEF, Rystad Energy and Wood Mackenzie, which use slightly different scopes and revise their history each edition. Analyst estimates of this market disagree by well over ten percent, so read it as the shape rather than the decimal.
| Year | Value | Note | Projected |
|---|---|---|---|
| 2013 | 0.3 GWh | ~300 MWh globally | |
| 2015 | 1.5 GWh | ||
| 2016 | 5.3 GWh | ||
| 2017 | 7 GWh | ||
| 2018 | 17 GWh | Cost parity approaching | |
| 2019 | 23 GWh | ||
| 2020 | 34.3 GWh | ||
| 2021 | 56 GWh | ||
| 2022 | 91 GWh | ||
| 2023 | 175 GWh | ||
| 2024 | 375 GWh | 375 GWh cumulative | |
| 2025 | 630 GWh | ~630 GWh (Wood Mackenzie) |