How much is the battery rebate in SA?
It depends on the battery's usable size and the install date, and it's tiered, so the first 14 kWh gets the full rate and bigger batteries get less per extra kWh. Our solar battery rebate guide explains how it works, and the battery rebate calculator shows how much you'll get.
When does the battery rebate drop?
The next drop is 1 January 2027, and it keeps stepping down every January and July until the end of 2030. The install date counts, not the quote date, so calculate your rebate and book in early if you want the 2026 rate.
What size battery do I need?
It's set by how much power you use after dark, not the size of your solar. We size it from your interval data and show you the cost per kWh after the rebate, so you can see where the sweet spot is for your home.
Can I add a battery to my existing solar?
Usually, yes. We either AC-couple it alongside your current inverter or swap to a hybrid inverter. In Seaford Heights we added a 26.3 kWh Sigenergy battery to existing solar. More in adding a battery to existing solar.
Will a battery keep my power on in a blackout?
Only if it's set up with backup. We can back up essential circuits like the fridge, lights and internet, or the whole home where the battery and switchboard allow. We confirm it before quoting, so there are no surprises the first time the grid drops out.
Can my battery charge for free from the grid?
On a Solar Sharer plan, yes. Since 1 July 2026, SA retailers must offer at least one plan with free grid power from midday to 3pm, capped at 24 kWh a day. On cloudy winter days, or if your solar is on the small side, the battery can top up free in that window and run the house through the evening peak. We can set the charge schedule up when we commission it. Those plans usually have higher supply and peak charges, so compare the total cost. More in Solar Sharer free power.
How much does a home battery cost in Adelaide?
On typical NG Elec jobs in 2026, after rebates, incl GST: a battery added to existing solar starts from about $9,000, and most land between $10,000 and $14,500. Solar and battery together starts from about $11,000, with most between $14,000 and $25,000. Brand matters too: we install Tesla Powerwall, Sigenergy, GoodWe, Sungrow and BYD. Every quote is free and itemised. See our price guide.
Is a battery worth it?
For homes that export a lot of solar during the day and buy power at night, it often is. Payback depends on your usage, tariff and the rebate, so we give you estimated numbers on your quote rather than a blanket promise. See solar battery payback in Adelaide.
