—RECOMMENDED SIZE
—ESTIMATED GENERATION
—INDICATIVE BILL SAVING
—STC DISCOUNT
—NET COST AFTER DISCOUNT
—INDICATIVE PAYBACK
That's roughly — panels at 440 W each. Figures are indicative and depend on your roof orientation, shading, tariff and how much you use during the day.
Assumptions used
- Imported electricity at $0.35/kWh; feed-in credit at $0.05/kWh
- Sydney yield of 1,400 kWh per kW per year, good orientation, minimal shading
- Roof area of 5 m² per kW installed
- STC zone rating 1.382 (NSW Zone 3), 5 deeming years remaining (2026–2030), $38 per certificate
- Installed cost $1,050/kW under 10 kW, $900/kW above
- Business self-consumption assumed 25 percentage points higher than the slider value
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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