Have questions about battery systems or want personalised advice for your home?
Contact Us →Have questions about battery systems or want personalised advice for your home?
Contact Us →How a 6.6kW solar system fills a 13.5kWh battery each month
91% of battery charging from solar
In winter months, grid charging tops up your battery. With the right energy plan, you can charge during off-peak periods at very low rates - or even free.
Monthly averages include all weather conditions (sunny, cloudy, and rainy days). Individual days will vary significantly. Assumes ~35% of daily usage during solar hours. Data: CER Zone 2 | BOM Swanbourne
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Analyse My Bill →Rottnest Island homeowners benefit from WA's exceptional 5.3-hour average daily sunshine. The federal Cheaper Home Batteries rebate provides significant upfront savings. Greater Perth's high irradiation levels ensure batteries charge fully most days, maximising return on investment.
Rottnest Island is served by Western Power. With 5.3 average daily sun hours, a well-sized battery system can significantly reduce grid dependence and electricity costs.
Cheaper Home Batteries Program:
From 1 July 2025, WA offers state battery rebates that stack with the federal rebate - up to $5,000-$7,500 total for a 10kWh battery.
Get an instant estimate based on your Rottnest Island address and eligible rebates.
Calculate My SavingsBattery savings vary based on your usage, tariff, and solar setup. Our guides cover everything you need to make an informed decision.
How the Cheaper Home Batteries Program works and how to claim up to $16,800.
Tesla Powerwall 3, BYD, Sungrow, Enphase compared. Updated costs and payback periods.
How virtual power plants work and what VPP-capable means for the rebate.
Find the best tariffs and feed-in rates for battery owners in Rottnest Island.
Our AI analyses your electricity bill to recommend the optimal battery setup for your Rottnest Island home.
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