How much is a GoodWe battery in Adelaide?
On typical NG Elec jobs in 2026, a GoodWe battery added to existing solar started from about $9,000 for 24 kWh usable, after rebates, incl GST. Marden, 24 kWh with backup on 3 circuits, was about $10,300 after rebates, incl GST. Seacombe Heights, 32 kWh, three phase, whole-home backup, was about $11,300. Every quote is itemised and free.
How much is new solar with a GoodWe battery?
Hove, 7.1 kW with 16 kWh, was about $12,100 after rebates, incl GST. Onkaparinga Hills, 8.7 kW with 24 kWh on three phase, was about $15,400. Woodcroft, 14.25 kW with 32 kWh and the old system removed, was about $20,600. See solar and battery prices for more.
Why is GoodWe cheaper per kWh than Sigenergy?
On our jobs GoodWe has usually come in around $350 to $470 per usable kWh for battery-only installs (after rebates, incl GST), against roughly $500 to $600 for Sigenergy. Sigenergy's price reflects its stackable design and gateway. For most homes that just want plenty of storage, GoodWe is strong value. We'll happily quote both.
Does a GoodWe battery get the federal rebate?
Eligible GoodWe batteries qualify for the Cheaper Home Batteries Program. We apply it through STCs on your quote, so there's nothing for you to claim. The full rate covers the first 14 kWh, then 60% to 28 kWh and 15% to 50 kWh. It's the install date that counts, and the next drop is 1 January 2027. Our rebate calculator shows how much you'll get.
Can GoodWe use the free Solar Sharer hours?
Yes, if you're on a Solar Sharer plan. In SA the free window is midday to 3pm, capped at 24 kWh a day. When we commission the battery we can schedule it to charge from the grid in that window on cloudy days, then cover your evening peak. Compare total plan costs first, as supply and peak rates are often higher.
Will a GoodWe battery keep the power on in a blackout?
If it's set up for backup, yes. We've done both selected-circuit backup, like Marden's three circuits, and whole-home backup, like Cowandilla and Seacombe Heights. How much it can run at once depends on the inverter size, so we check your big loads before quoting.
What warranty does GoodWe have?
Check the current manufacturer warranty on the datasheets we send with your quote, as terms differ between models and change over time. We register the warranty for you. Our installation is covered by NG Elec's lifetime workmanship warranty.
GoodWe or Sigenergy or Tesla?
GoodWe is usually the best value per kWh. Sigenergy suits large, three phase or expandable systems. Tesla Powerwall suits people who want one well-known unit. Our best battery guide goes through the differences.
