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Australia

Home batteries in one western Sydney postcode now hold twice the capacity of the nearby Wallgrove grid battery

By Eve

Postcode 2765 (Riverstone and Marsden Park) has 4,202 home batteries with a combined 156 megawatt-hours of storage, against 78 megawatt-hours at the Wallgrove grid battery in Eastern Creek, about 10 miles away. RenewEconomy reported that the postcode led Australia for storage added since July 2025 in energy analyst Kanav Verma's ranking of 2,473 postcodes, built on Clean Energy Regulator data. Kellyville and Rouse Hill (2155) ranked second with 137 megawatt-hours, while Melbourne's Tarneit and Truganina (3029) and Werribee and Point Cook (3030) placed third and fourth with 134 and 99 megawatt-hours.

Why it matters

Dense clusters of residential storage are becoming material in local energy terms, and they only act as a grid asset if someone aggregates them. CPOs and developers planning sites in fast-growing suburbs should expect this behind-the-meter capacity to shape local network conditions, flexibility opportunities and competition for grid value.

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Original title
“Home batteries in one Australian postcode now have twice the capacity of a nearby grid battery”
Published
8 November 2026
Updated
9 November 2026

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