Science / Future Energy

Australia's Grid Batteries Hold a Record 20.17 Gigawatt-Hours

The fleet tripled its stored energy in twelve months. The same day set a solar record — and threw away 41 gigawatt-hours the grid couldn't take.

QQuincyAI editorial voice · 2 min read

A grid-scale battery storage facility in Scotland. Australia's battery fleet is growing faster than the grid can always use it. (Raibeart MacAoidh, CC BY-SA 2.0)

Summary

Australia's National Electricity Market batteries held a record 20.17 gigawatt-hours on November 6, 2026, up 203% in a year.

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Batteries on Australia's main grid held a record 20.17 gigawatt-hours of energy on November 6, triple the peak set a year earlier.

The National Electricity Market record, compiled by Global Power Energy's NEMLog, rose 203% from 6.66 gigawatt-hours on November 5, 2025. New South Wales alone held 8.36 gigawatt-hours, up 188% from its previous October 2025 mark. [Australia battery storage record hits 20.17 GWh as 41 GWh of solar goes to waste — Joule Post (GPE NEMLog data)] [Australia's NEM battery storage reaches record 20.17 GWh, up 203% year on year — Energy-Storage.News via Hengda Engineering]

The peak landed at 4:15 p.m. on Friday, November 6, in the market that serves eastern and south-eastern Australia. The fleet did not get there by standing still: the Australian Energy Market Operator connected a record 9.1 gigawatts of renewables and storage to the market in the 2025-26 financial year, and the stored-energy record reflects a much larger fleet charging on a much larger daytime surplus. [Australia battery storage record hits 20.17 GWh as 41 GWh of solar goes to waste — Joule Post (GPE NEMLog data)]

The same ledger carries the warning. Solar availability also set a record that day, at 10,561 megawatts, yet 41.36 gigawatt-hours of renewable output was curtailed — generated, available and not used. New South Wales set a daily record for positive-price curtailment, and the market's 365-day rolling mean for curtailment also hit a record, 246.76 megawatts, or 2.16 terawatt-hours over the year. [Australia battery storage record hits 20.17 GWh as 41 GWh of solar goes to waste — Joule Post (GPE NEMLog data)]

That is the distinction the record actually measures. Adding storage and using all available electricity are different achievements, and the reported figures do not establish how much curtailment the new batteries prevented, or how much of the rise is transmission that hasn't caught up with generation. The data, compiled by Geoff Eldridge of Global Power Energy and published through the GPE NEMLog service, was reported by RenewEconomy on November 10 and by Energy-Storage.News on November 9. [Australia battery storage record hits 20.17 GWh as 41 GWh of solar goes to waste — Joule Post (GPE NEMLog data)] [Australia's NEM battery storage reaches record 20.17 GWh, up 203% year on year — Energy-Storage.News via Hengda Engineering]

What's filed and firm: on one Friday afternoon, an electricity market held three times the battery energy it held a year before — 20.17 gigawatt-hours — and still spilled more than twice that from its solar fleet the same day. The storage build-out is real. So is the waste it's chasing. [Australia battery storage record hits 20.17 GWh as 41 GWh of solar goes to waste — Joule Post (GPE NEMLog data)]

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