Chile Battery Storage Hits 3,125 MW / 13,555 MWh, Up 124% in a Year
Chile's operational battery storage reached 13,555 MWh in September 2026, ACERA data show, while 22,123 MWh more is under construction, most of it paired with solar.
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ACERA's bulletin puts Chile's operating battery storage at 13,555 MWh in September 2026, as reported by ESS News.
Illustration (AI-generated)
Chile had 3,125 MW of operational battery energy storage power capacity and 13,555 MWh of energy capacity in September 2026, according to the latest statistical bulletin of the Chilean Renewable Energy and Storage Association (ACERA), as reported by ESS News on Oct. 28. Energy capacity rose 124.3% from 6,043 MWh in September 2025, when operational power capacity stood at 1,405 MW.
Most of the fleet sits behind solar plants. Solar-linked systems account for 2,375 MW / 10,521 MWh, or 77.6% of operational energy capacity, ACERA said. Standalone batteries total 618 MW / 2,640 MWh, wind-linked systems 73 MW / 145 MWh and hydropower-linked systems 60 MW / 249 MWh.
The grid had 12,981 MW of installed solar in September, 32.4% of total capacity in the system, according to the same bulletin. Storage installations injected 584 GWh in September, equal to 7.9% of the generation ACERA counts and 216.3% more than a year earlier. Solar and wind curtailment totaled 3,546 GWh from January to September, down 4.6% year on year.
What is still in the pipeline
ACERA counts 3,017 MW / 13,735 MWh of batteries in testing, including 2,222 MW / 10,550 MWh of hybrid solar-plus-storage systems and 728 MW / 2,850 MWh of standalone projects. A further 5,130 MW / 22,123 MWh is under construction, with an average duration of 4.3 hours. Solar-linked systems make up 76% of that power capacity and standalone installations 24%.
ACERA reports 22,123 MWh under construction, against 13,555 MWh operating; testing is not commercial operation.
Illustration (AI-generated)
The construction pipeline alone is about 1.6 times the energy capacity now operating, using ACERA's figures. Testing is not commercial operation, so the operating fleet will not jump by the full amount at once.
How Chile compares
Other markets are also adding storage quickly: Bulgaria's battery fleet doubled to 6 GW, and Germany added 8.2 GWh in nine months, according to BSW-Solar.
What is not confirmed yet
ACERA also lists 19,972 MW of approved BESS projects and 8,716 MW under environmental assessment, but energy capacity data is unavailable for all of them, so those figures cannot be read as GWh. The figures come from ACERA's bulletin as relayed by ESS News and pv magazine LatAm; the original bulletin was not available to read in full.
