—SUGGESTED USABLE CAPACITY
—YOUR EVENING USAGE
—FEDERAL BATTERY DISCOUNT
—NET COST AFTER DISCOUNT
—INDICATIVE ANNUAL SAVING
—INDICATIVE PAYBACK
The discount applies the tiers from 1 May 2026 — full rate to 14 kWh, 60% from 14 to 28 kWh, 15% from 28 to 50 kWh. A VPP incentive may be available on top.
Assumptions used
- Imported electricity at $0.35/kWh; feed-in credit at $0.05/kWh
- Installed battery cost of $900 per usable kWh before rebate
- Battery cycles roughly once per day, limited by your evening usage
- Rebate at 6.8 STCs per usable kWh at $38, tapered by the capacity bands
- Essential-circuit backup adds 3 kWh; whole-property backup adds 8 kWh
A guide, not a quote
These calculators work from published industry assumptions. They cannot see your roof, your shading, your tariff or your meter, so treat every number as a rough starting point rather than an answer. Talk to us and we'll go through it properly and put the real figures in writing.
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