The short answer
What the solar rebate actually is, and is not
Almost everyone calls it the "solar rebate", but the word is misleading. The main one, the federal STC, is not a cheque you apply for and not a payment that lands in your account. It is a point-of-sale discount your installer subtracts from the quote in exchange for the certificates your system creates. That single fact changes how you should read quotes, when you should buy, and which state schemes are actually worth chasing. This page explains how the STC really works, why it shrinks every year, and how to compare quotes so the discount is not quietly hiding the real price.
Here is the core takeaway in one line: the main solar rebate is the federal STC, and it is a point-of-sale discount, not a payment you apply for. Your system creates Small-scale Technology Certificates, your installer claims them and trades them, and the value comes off your quote upfront. In 2026 a 6.6 kW system in Zone 3 earns about 45 certificates worth roughly $1,710 at a $38 spot price. Because the discount is delivered as tradeable certificates, its dollar value floats with the market, so the "rebate" you are quoted can differ between installers and between months. And because the deeming period drops one year every January until the scheme closes in 2030, the rebate shrinks each year you wait. State "rebates" in 2026 are mostly for batteries and hot water, not panels.
Reframe the assumption: a quote advertised "with no rebate" can still be cheaper than one shouting about a big rebate, because the second quote may simply be showing the STC discount it has already subtracted. Two quotes are only comparable on the final installed price, net of STCs. Treat the rebate line as marketing, not as savings you can add on top.
Interactive explainer
How much is your STC solar rebate worth?
Set your system size, your STC zone and the certificate price. We apply the official formula (size in kW times the zone factor times the 5-year deeming, then times the STC price) to show your number of certificates and your dollar rebate.
Optional: read your roof first
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Estimated STC rebate
$ off your quote
Illustrative only. Formula: certificates = system kW × zone factor × 5-year deeming, rounded down; rebate = certificates × STC price. The value steps down each January as the deeming period falls, and the scheme closes in 2030. The STC price floats below the $40 clearing-house cap, so installers may assume a different figure. Indicative price after rebate assumes about $0.95 per watt installed. Sources: Clean Energy Regulator SRES, Solar Choice price index.
| Zone | Factor | Where it applies |
|---|---|---|
| Zone 1 | 1.622 | Far north and inland (e.g. Cairns, Alice Springs, Broome) |
| Zone 2 | 1.536 | Northern NSW, southern QLD inland, parts of WA |
| Zone 3 | 1.382 | Most capital cities: Sydney, Brisbane, Perth, Adelaide, Canberra |
| Zone 4 | 1.185 | Cooler southern areas: Melbourne, Hobart and most of Victoria |
The blind spot
Why most solar rebate guides leave you confused at quote time
Most articles about the solar rebate do three unhelpful things, and each one trips buyers up when the quotes arrive.
First, they describe it as a payment. Phrases like "claim your government solar rebate" make it sound like a form you fill in and a cheque that follows. It is not. The STC is a discount your installer applies at the point of sale, in exchange for the certificates your system creates. If you go looking for a payment that never arrives, you have misunderstood what you already received as a lower price.
Second, they quote one fixed dollar figure. The rebate is not a flat amount. It is the number of certificates, set by system size and your zone factor and the deeming period, multiplied by a certificate price that floats below the $40 cap. A guide that says "the rebate is $X" hides the fact that the same system is worth different amounts in different zones, in different months, and from different installers.
Third, they treat the figure as stable. The STC deeming period drops by one year every January and the scheme closes in 2030. A guide written two years ago overstates today's rebate by hundreds of dollars. Numbers like these belong in a dated box, which is why every figure on this page is stamped with the date it was checked.
How the solar rebate is actually built
Expert analysis: the machinery behind the discount
How the STC mechanism really works, and who claims it
The Small-scale Technology Certificate is a tradeable certificate created under the federal Small-scale Renewable Energy Scheme, administered by the Clean Energy Regulator. When you install solar, the system is "deemed" to generate a set amount of clean energy over a future period, and that becomes a number of certificates: system size in kilowatts, times a regional zone factor (Zone 3 covers most capital cities at 1.382), times the deeming period in years. In practice your Clean Energy Council accredited installer creates and sells those certificates and hands you the value as an upfront discount, which is why you rarely see a certificate at all. The rebate is real, but it reaches you as a lower price, not a payout.
Why the rebate shrinks every year, and the 2030 cliff
The deeming period is the part that falls. It counts the years between your install and the scheme's 2030 close, so it drops by one every January. In 2026 it is 5 years; in 2027 it will be 4, and so on to zero. Because certificates equal size times zone times deeming, fewer deeming years means fewer certificates and a smaller rebate for an identical system. A 6.6 kW Zone 3 system earns about 45 certificates this year, worth roughly $1,710 at a $38 spot price. The unintended consequence is a countdown: waiting does not get you a better deal, it gets you a smaller one.
How installers present STCs in quotes, and how that hides comparison
Here is where buyers lose money. Because the certificate price floats below the $40 cap, every installer makes an assumption about what your STCs are worth. One quotes the spot price, another a cautious lower figure, a third the full cap. So the "rebate" line varies between quotes for the same system, and a bigger rebate headline can sit on top of a higher base price and still cost you more. The only fair comparison is the final installed price after the rebate. Always ask which STC price the quote assumed, and whether the rebate is already included or shown separately.
What state schemes actually cover now: batteries, hot water and loans
Beyond the federal STC, "government solar rebate" usually points to a state scheme, and in 2026 those have shifted away from panels. Victoria runs interest-free loans and a hot-water rebate through Solar Victoria rather than a panel grant. New South Wales supports home batteries through the Peak Demand Reduction Scheme. There is also a new federal battery discount, the Cheaper Home Batteries Program, delivered through STCs from 1 May 2026, paying roughly $244 per usable kilowatt-hour on a tiered basis for a battery paired with solar. For the panels themselves, expect the STC and little else; the extra layers are mostly for storage and hot water.
What this costs real households
How the rebate confusion plays out in real quotes
The mechanism above is not theory. It is exactly how the discount trips up well-meaning buyers.
They pick the quote with the biggest rebate
One quote advertises a $2,000 rebate, another a $1,400 one. The buyer picks the bigger number, but the first quote had a higher base price and assumed the $40 cap, while the second was already cheaper and assumed the spot price. The final installed cost was lower on the "smaller rebate" quote. Comparing rebate headlines instead of installed prices cost them money.
They go hunting for a cheque that never comes
A household installs solar expecting a government payment to arrive afterwards, because everyone called it a rebate. Nothing lands, because the value was already taken off the quote. They spend weeks chasing a refund that does not exist, when the discount was the lower price they signed.
They wait a year for a "better" rebate
A buyer delays the install to next year, assuming rebates rise over time like other incentives. Instead the deeming period dropped, so the same system earns one fewer year of certificates and a smaller rebate. Waiting cost them hundreds of dollars and a year of bill savings.
They assume their state adds a panel grant
Counting on a second cheque from their state government, a household budgets for a rebate on top of the STC. But in 2026 their state help is for batteries and hot water, not panels. The panel rebate was the STC alone, and the extra they planned for never existed.
The insider insight
The rebate floats, so the same system has no single "right" number
Here is the part the rebate guides never mention. Because the discount is delivered as tradeable certificates, its dollar value rises and falls with the STC market price, which trades below the $40 clearing-house cap. That means there is no single correct rebate for your system. The same 6.6 kW array can be quoted with a rebate of, say, $1,580 by one installer pricing STCs cautiously and $1,800 by another assuming the cap, and both can be honest. The figure is an assumption about a market price, not a fixed entitlement.
The non-obvious truth: when you compare quotes, ask each installer one question, which STC price did you assume? An installer who assumes the $40 cap is showing you a generous rebate they may not actually capture, which can mean a thinner real discount baked into a higher base price. The honest comparison is always the final installed price after the rebate, with the STC assumption stated. The households that win ignore the rebate headline and compare the bottom line.
The practical consequence: never let the size of a rebate decide your installer. Two quotes are only comparable net of STCs, and the bigger rebate is often attached to the worse deal.
Grounded in the analysis
What you should actually do
Specific moves that follow from how the rebate is priced, not generic advice.
Compare quotes net of STCs
Ignore the rebate headline and compare the final installed price after the discount. Ask each installer which STC price they assumed, and whether the rebate is already in the total or shown on the side. The bigger rebate is often on the dearer quote.
Do not wait for next year
The deeming period drops every January, so the same system earns a smaller rebate the longer you wait, all the way to zero in 2030. There is no future increase to hold out for. Use the calculator above to see what each year of waiting costs you.
Stack the right state layer
For panels the STC is usually the only rebate. In VIC look at Solar Victoria interest-free loans and the hot-water rebate; in NSW the battery support runs through the Peak Demand Reduction Scheme. From May 2026 a federal battery discount applies if you add storage. In WA and NT, panel help is the STC alone.
See how to size a solar system properly, check the battery rebate, or look at the hot-water rebate for your state.
Current figures, last updated 2026-06-15
Australian solar rebate figures for 2026. Sources: the Clean Energy Regulator (STC scheme and zone ratings), the Solar Choice price index, DCCEEW and the Clean Energy Regulator (Cheaper Home Batteries Program), Solar Victoria, IPART and the Peak Demand Reduction Scheme (NSW), and the Australian Energy Regulator (DMO 2025-26). Confirm current figures before purchase, as the rebate is reviewed regularly and the STC price floats.
The bottom line
Why this matters right now
The solar rebate is one of the best clean-energy incentives in the country, but it works nothing like the word suggests. It is a discount delivered through tradeable certificates, its dollar value floats with the market, and it shrinks a step every January on the way to zero in 2030. Understand that and you stop chasing a cheque that never comes, you stop letting a big rebate headline steer you onto a worse quote, and you stop waiting for an increase that will never arrive. Compare quotes on the final installed price net of STCs, ask which certificate price each installer assumed, claim the rebate before the next January step-down, and stack the right battery or hot-water layer for your state. Do that and the rebate does exactly what it should: it quietly makes a good system cheaper.
Common questions
A Selectra expert answers your solar rebate questions
No. The main solar rebate, the federal Small-scale Technology Certificate (STC), is not a cheque and not a payment you apply for. It is a point-of-sale discount: your installer claims the certificates your system creates and subtracts their value from the quote upfront. You almost never touch the certificates yourself. That is why a quote can already include the rebate without saying so, and why two quotes are only comparable once you know each one is net of STCs.
It depends on system size, your STC zone and the certificate price. In 2026 the deeming period is 5 years, so a 6.6 kW system in Zone 3 (most capital cities) earns about 45 certificates worth roughly $1,710 at a $38 spot price. A 10 kW system earns about 69 certificates, roughly $2,620. The value falls a step every January as the scheme winds down to zero in 2030, so each year you wait the rebate shrinks.
Because the STC is delivered as tradeable certificates, its dollar value floats with the certificate market price, which sits below the $40 clearing-house cap. One installer may price your STCs at the spot rate (around $38), another at a more cautious figure, and a third may assume the full cap. So the "rebate" line can differ between installers and between months for the same system. Always ask which STC price the quote assumes, and compare the final installed price, not the rebate headline.
In 2026 most state help is for batteries and hot water, not panels. Victoria runs interest-free loans and a hot-water rebate through Solar Victoria. New South Wales supports home batteries through the Peak Demand Reduction Scheme rather than a panel grant. There is also a new federal battery discount, the Cheaper Home Batteries Program, delivered through STCs from 1 May 2026. For the panels themselves, the STC is usually the only rebate, so do not expect a second cheque on top.
No, waiting costs money. The STC deeming period drops by one year every January, so the same system is worth a step less each year until the scheme closes in 2030. There is no upcoming increase to wait for. If anything, prices and the rebate both point to acting sooner. The only reason to delay is to add a battery, where the new federal battery program from May 2026 may improve your overall outcome.
In theory yes, but in practice almost no one does. To create STCs the system must be installed by a Clean Energy Council accredited installer using approved equipment, and the paperwork and trading run through the Clean Energy Regulator. Installers do this routinely and pass the value back as the upfront discount. Claiming the certificates yourself means managing the registration and selling them on the open market for whatever price you can get, usually less than the discount a volume installer secures.
