How a solar and battery system actually works
kW versus kWh, why 20 kWh a day is not 20 kW of solar, and what stays on in a blackout.
Guides
Guides you can skim
Rebates, grid rules, sizing and costs for solar and batteries in NSW. Each guide opens with the short answer. Written to be checked, not to be believed.
NSW battery rebates: how the two discounts stack
One federal, one state, one install. What each pays, and what changed in 2026.
The solar “rebate” is not a rebate: how your STC discount works
A three-part formula. Learn it once and check any quote in ninety seconds.
Commercial solar payback in NSW: a number that survives the bill
Self-consumption, demand charges and the 99 kW question.
How to size a home battery without guessing
Your evening usage is the input. Not your roof, and not the rebate.
Export limits in NSW: what your network will actually approve
Ausgrid, Endeavour and Essential. Why limits exist, and what to do when you are capped.
How these are kept honest
- Every guide carries a revision number, a date and its sources.
- When a rule changes, we revise the guide and raise the revision. We do not edit silently.
- Found something wrong or out of date? Tell us at info@setsolar.com.au. Corrections are published, not buried.
Want this checked against your actual site?
Send us your latest bill, a photo of your switchboard and your roof plan. We will tell you what the numbers look like for your property — including where the answer is “not yet”.