TasNetworks said it is experiencing 50 home battery enquiries per day and completing 200–250 installs per month.
“That’s 3–3.7MWh (megawatt-hours) of new behind‑the‑meter storage each month – the equivalent of 12–15 community batteries added to the grid,” TasNetworks executive digital, strategy and customer Andrew Davis said on LinkedIn.
This is delivering “unprecedented” low-voltage network visibility for the state, which is representative of the widespread smart meter uptake happening across Australia.
Davis said the convergence of universal smart metering and rapid battery adoption provides a “once-in-a-generation” opportunity to increasingly configure the grid around customers while leveraging household assets.
TasNetworks completed analysis of home battery behaviours during summer and winter, with distinct profiles in each season.
During summer, a 15 kilowatt-hour (kWh) battery is typically idle overnight, before charging begins at around 7am during the morning peak. It would be fully charged by around noon and then discharge during peak and off-peak evening periods.
Winter behaviours are more variable as households consume more energy, due to heating, and there is less solar availability. Batteries charge slowly at night, before discharging during the morning peak; they’ll then soak up any solar that’s available during the day, before discharging again in the evening peak.
Whatever charge isn’t available from solar is generated from wind.
The rush of home battery adoption comes amid surging interest for the Cheaper Home Batteries program, which recently notched 250,000 installations – the equivalent of 6.4 gigawatt-hours of stored capacity.
It took 10 years for Australia to build its first 6GWh of home battery storage and only eight months to build the next 6GWh.
Around half of those who have installed Cheaper Home Batteries have paired this with a new or upgraded solar system.
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