China installed roughly 65 GWh of grid-scale battery storage in December 2025 alone, more than the United States built across the whole of 2025. The figure comes from Benchmark Mineral Intelligence, and it lands as one of the bluntest illustrations yet of how lopsided the storage race has become.
The renewables problem everyone keeps circling back to is timing. Solar shows up at noon, wind whenever it feels like it, and demand peaks after sunset. Grid batteries are the workaround: charge when power is cheap and plentiful, discharge into the evening crunch. China is now building that buffer faster than anyone has built anything in this sector.
The number that stops you
65 GWh in December. The US managed 46.5 GWh for the entire year, and the US is the second-largest storage market on the planet. So this isn't China beating a laggard. It's China lapping the only other serious player.
Benchmark puts China's December haul at about 41% of its own annual installs, up from roughly 25% the year before. December is always inflated because developers race to hit capex deadlines on calendar-year budgets, so treat the monthly spike as partly an accounting artifact. The year-on-year jump of around 135% is the cleaner signal, and it's still enormous.
Where did it go? Benchmark's data puts Inner Mongolia at about 65% of December installs, with Xinjiang next at around 14%. Both are wind and solar regions with not enough local demand to soak up what they generate, which is exactly where storage earns its keep.
Globally, batteries are catching solar
Worldwide installs hit roughly 315 GWh in 2025, close to 50% growth over 2024. Benchmark's research head Iola Hughes expects more than 450 GWh in 2026, with no supply crunch in sight. Whether that holds depends on lithium prices, which started creeping up at the cell level last year and haven't fully hit system pricing yet.
Australian analyst Ray Wills, writing for Renew Economy, argues batteries are now outpacing solar as the fastest-deploying clean technology in history. Maybe. His dispatch estimates assume 80% daily cycling and admit the global numbers aren't consolidated yet, so the curve is an educated guess, not a measurement. The direction is hard to argue with even if the precision isn't there.
Storage dispatch sat at about 1.15% of global electricity demand heading into 2026, up from 0.16% in 2023. Impressive growth rate, tiny absolute share. Both things are true.
So does this actually fix anything by 2030?
That's the leap worth resisting. Batteries make renewables dispatchable, yes. They do not by themselves push coal and gas off the grid, and China is still adding fossil capacity even as it breaks storage records. The buffer is growing fast, but it's shifting energy by hours, not replacing baseload across seasons.
Benchmark analyst Calvin Xu pointed to the policy backdrop: China's National Energy Administration and the NDRC set a target in September to reach 180 GW of installed storage between 2025 and 2027. That's the kind of state signal that tends to get hit in China, which is why the 2026 forecasts skew confident.
The next checkpoint is Benchmark's full-year 2026 tally, due early next year. If installs clear 450 GWh and lithium prices stay contained, the gap between China and everyone else widens again.
