Australia · Education only
Rooftop solar and the bill.
Daytime power offsets grid imports. Exports usually earn less. Solar alone does little for the evening, and it does not run the house in a blackout.
Education only. SparkReady is not a lender and this is not credit advice.
01Start from the bill
Note kWh used, cents per kWh, the daily supply charge, and whether the tariff is flat or time-of-use. A guide cannot replace that bill.
02What the array does
North-facing roofs see more sun in Australia. Shade, tilt, and export limits often matter more than the brochure kilowatts. Generation used at home avoids the import tariff. Generation exported usually earns a lower feed-in tariff, and that tariff is a retailer offer, not a national rate.
03STCs, briefly
Small-scale technology certificates are a federal incentive under the Small-scale Renewable Energy Scheme. Households often assign them to the installer for a lower invoice. The value moves. Eligibility depends on accredited installers and approved products. Check the Clean Energy Regulator.
04Paying for it
Cash, a commercial loan, or — in NSW, if you and the product qualify — the Home Energy Saver Loan. The system is a purchase. The loan is a second contract. The bill can fall while you still repay.
05Short answers
No. These notes are about the energy component. The daily supply charge is still on the bill unless your retailer says otherwise.
Ordinary grid solar does not. Backup is a separate design, usually involving a battery and hardware the quote has to name.