The federal rebate on solar shrinks every January, and most NSW homeowners do not realise it. Waiting a year costs you real money. Here is what is available in 2025 and what it is worth.
Federal vs. State: Understanding the Two Tiers of Solar Support
Support comes from two levels, and in 2025 almost all of it is federal.
- Federal Rebate: A nationwide point-of-sale discount, taken off your invoice before you pay. This is the significant one.
- NSW Incentives: State programs, which change often and usually target batteries or specific households.
The Federal Rebate: Small-scale Technology Certificates (STCs)
Handled entirely by your installer. There is no form for you to fill in.
What Are STCs?
Small-scale Technology Certificates are created when you install an eligible system. How many you get depends on system size and location.
Your installer claims them, sells them on the open market, and passes the value to you as a discount. That line on your quote marked "solar rebate" or "government incentive" is the STC value.
How is the STC Rebate Calculated in 2025?
- System Size (kW): Bigger system, more certificates.
- Your Location (Postcode Zone): Australia is split into zones by solar irradiance. Most of NSW, Sydney, Newcastle and Wollongong included, sits in Zone 3.
- The Deeming Period: Years remaining until the scheme ends in 2030. In 2025 that is 6 years.
The deeming period drops by one year every January. Same system, same postcode, smaller rebate each year. That is the whole argument for not waiting.
A Practical Example for 2025
A 6.6kW system in Sydney (Zone 3) in 2025:
- Calculation: 6.6kW x Zone Rating (1.382) x Deeming Period (6 years) = 54 STCs, rounded down.
- Discount: STC market value moves, but assume around $38.
- Total Rebate: 54 x $38 = $2,052
Over two thousand dollars off, before you pay anything. Install the same system in 2026 with a 5-year deeming period and you lose roughly a sixth of that.
NSW-Specific Solar Incentives for 2025
What Happened to the Empowering Homes Program?
The NSW Empowering Homes program offered interest-free loans for solar-battery systems to low-income households. Note that this program has now closed to new applicants.
Check Energy NSW for anything new before you assume nothing is available.
Feed-in Tariffs: Getting Paid for Your Excess Energy
Not a rebate, but an ongoing credit for the surplus you export.
NSW has no mandated minimum feed-in tariff, so retailers set their own and they vary widely.
Our Expert Tip: Do not chase the highest FiT. Retailers offering a headline export rate often charge more for the power you buy back at night, and most households buy far more than they sell. Compare the total annual cost on Energy Made Easy using your own usage.
How to Apply and Ensure You're Eligible
Your Clean Energy Council (CEC) accredited installer does the STC paperwork. The discount comes off the quote, so you only ever pay the balance.
To qualify:
- System under 100kW.
- Panels and inverter on the Clean Energy Council approved list.
- Designed and installed by a CEC Accredited Professional.
Miss any one of those and you forfeit the rebate entirely.
Conclusion: Act in 2025 for Maximum Solar Savings
- The Federal STC Rebate is Key: Roughly $2,000 off a 6.6kW system in Sydney, taken off the invoice.
- Time is of the Essence: The deeming period drops every January. Same system, smaller rebate, every year until 2030.
- Shop Around for Feed-in Tariffs: Compare total annual cost, not the export rate.
- Work with a CEC Accredited Expert: It is an eligibility condition, not a recommendation.
Contact SolarInsights.com.au today for a free, no-obligation quote from trusted local NSW installers and take the first step towards energy independence.