September delivered 20.4 GWh of grid batteries worldwide — a single-month record — while China connected the first 100 MW compressed CO2 long-duration storage plant and BloombergNEF confirmed solar is heading for a 584 GW year that will push cumulative capacity past 5 terawatts. The bottom line: the energy transition's bottleneck is no longer technology or economics but physical infrastructure delivery speed — factory commissioning timescales, EUV lithography tooling limits, and transmission upgrades are now the binding constraints.
A monthly tracking report confirmed 20.4 GWh of utility-scale battery storage commissioned globally in September — a single-month record with year-to-date installations running 43% ahead of 2025. China accounted for roughly 60% of deployments.
China connected a 100 MW, 1,000 MWh compressed CO2 energy storage facility to its national grid — storing energy by compressing CO2 to supercritical state in underground caverns and discharging through a turbine at roughly 65% round-trip efficiency.
BNEF projects 584 GW of new solar in 2026 — a record — despite a 29% drop in China's own additions, offset by 15% growth across the rest of the world. If achieved, cumulative global solar crosses 5 terawatts.
European integrators Intilion and Alfen are partnering with CATL to deploy sodium-ion battery systems, with commercialisation expected within 12 months — significantly earlier than most analysts projected. Na-ion uses no lithium or cobalt.
Home battery systems reached 276,011 in Australia's first half — a 52% increase year-on-year, outpacing rooftop solar growth for the first time as households pair existing panels with storage.
Battery storage systems across New South Wales earned approximately AU$5.63M during a two-hour window when wholesale prices peaked at roughly 230x typical rates — a live demonstration of grid-scale storage economics.
South African utility Eskom issued qualification for co-development partnerships covering up to 6 GW of renewables and 1 GW/4 GWh of battery storage — Africa's single largest clean-energy procurement.
The Trump administration is seeking to halt Orsted's Revolution Wind project, which is already largely operational and supplying power to New England, citing permitting concerns previously resolved.
Antora's 5.8 GWh thermal storage project uses carbon blocks heated by excess renewable electricity to dispatch industrial process heat days later — equivalent to roughly 29 hours at 200 MW continuous discharge.
National energy storage commitments nearly tripled since COP29 to 822 GW across 99 countries by 2030, but still fall 45% short of the 1,500 GW target, with China and the EU driving most ambition.
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