STC discount (PV & battery)
Point-of-sale reduction via Small-scale Technology Certificates—claimed through your CEC-accredited installer.
NationalApplies in all states
Battery STC rules change 1 May 2026
Victoria & Australia · Rebates hub
Solar rebates & rules that matter
Federal STCs, Solar Victoria eligibility, tiered battery support, and the dates incentives shift—one guide from xTechs so you can read requirements before you quote.
- Federal STCsPV + home batteries
- Solar VictoriaPV rebate + loan
- From 1 May 2026Tiers 100% / 60% / 15%
- Officialenergy.gov.au · solar.vic.gov.au
Overview
Two governments, one install
Federal and Victorian incentives stack differently for PV vs batteries. This page is your structured reference—pair it with our long-form May 2026 article for VPP and bill examples.
Solar Homes (PV)
Separate state rebate + optional interest-free loan when all four eligibility criteria are met.
~$1,400Rebate + loan pathway
Battery rules change
From 1 May 2026, battery STCs use tiered capacity bands and a lower certificate value.
1 May 2026Plan installs early
Paperwork on your quote
We model incentives in writing—STC assignment, inspections, and Solar Victoria steps where eligible.
VIC-wideIn-house install team
Before vs after
Why the 1 May 2026 date matters
Indicative examples only—your quote uses current STC prices and eligible capacity at install.
10 kWh (typical home)
Before 1 May 2026
Rebate ~$3,300
Indicative out-of-pocket ~$9,700
Flat rate to 30 Apr 2026From 1 May 2026
Rebate ~$2,720
Indicative out-of-pocket ~$10,280
Still in 100% tier; STC value drops48 kWh (large system)
Before 1 May 2026
Rebate ~$9,000+
Indicative out-of-pocket ~$11,000
Flat rate on all kWhFrom 1 May 2026
Rebate ~$6,198
Indicative out-of-pocket ~$13,802
Tiers + STC drop—biggest changeFrom 1 May 2026
Battery STC tier ladder
Usable capacity is split into bands. Oversized batteries attract far less support per extra kWh.
0–14 kWh
0%Full STC support—sweet spot for many homes
14–28 kWh
0%Moderate support on the middle block
28+ kWh
0%Minimal support—oversizing costs you rebate
| Band | Support | Meaning |
|---|---|---|
| 0–14 kWh | 100% | Full STC support—sweet spot for many homes |
| 14–28 kWh | 60% | Moderate support on the middle block |
| 28+ kWh | 15% | Minimal support—oversizing costs you rebate |
Dates of change
Timeline & conditions
- Until 30 Apr 2026
Flat-rate battery STCs
Eligible kWh generally attracts the same STC rate—larger batteries get proportionally larger discounts.
- From 1 May 2026
Tiered battery bands
100% on first 14 kWh, 60% on 14–28 kWh, 15% above 28 kWh usable capacity.
- From 1 May 2026
Lower STC $/kWh
Indicative certificate value drops (e.g. ~$244/kWh toward ~$197/kWh in published examples).
- Ongoing
Solar Victoria updates
State caps and criteria change independently—confirm at solar.vic.gov.au before you sign.
Federal (Australia)
National STC requirements
STCs are not a separate grant application—they are assigned to your installer and passed through as a discount when the system is eligible.
STC discount on solar panels
- Zone 4 for greater Melbourne—deeming period runs to 2030
- Discount applied on invoice via STC assignment to installer
- Requires CEC-approved products and compliant install documentation
STC discount on home batteries
- Listed products and eligible coupling (AC retrofit or hybrid DC)
- From May 2026, right-sizing beats max kWh for rebate dollars
- Battery-only retrofits can qualify—subject to regulator rules at install
Victoria (state)
Solar Victoria Solar Homes
State PV rebate is separate from federal STCs. All four criteria below must be met—not three out of four.
- Owner-occupier at the install address
- Combined household taxable income under $210,000
- Property value under $3 million
- No Solar Homes PV rebate at this address in the last 10 years
Battery-only projects usually rely on federal battery STCs, not the PV panel rebate. Official details: solar.vic.gov.au · energy.gov.au batteries.
Typical PV package
Rebate + loan pathway
~$1,400
rebate when eligible
Optional interest-free loan ~$1,400 over four years (matching rebate).
Residential solarWith xTechs
From assessment to rebate records
01 Site assessment
Usage, existing PV, switchboard, and which programs may apply.
02 Written quote
Federal STC and any Solar Victoria amounts modelled with assumptions stated.
03 Compliant install
CEC-minded design, inspection, CES, and STC assignment paperwork.
04 Handover
Monitoring, rebate records, and links to deeper guides if you want more detail.
Next step
Model rebates on your roof
Use our homepage calculator for a quick STC estimate, or book an assessment for a quote with federal and state assumptions spelled out.
- STC assignment
- Solar Victoria checks
- Right-size battery
- CES & handover
FAQ
Common rebate questions
What is the difference between federal STCs and Solar Victoria rebates?
Federal STCs (Small-scale Technology Certificates) are a national discount on eligible solar PV and battery systems, claimed through your installer at purchase. Solar Victoria runs separate state programs—most commonly the Solar Homes rebate for new PV ($1,400 rebate plus an optional matching interest-free loan when eligible). They stack differently depending on what you install and whether you meet each program’s rules.
When do federal battery rebate rules change in 2026?
From 1 May 2026, eligible home battery STCs move to a tiered structure based on usable capacity: 100% support on the first 14 kWh, 60% on the next 14 kWh (14–28 kWh), and 15% above 28 kWh. The STC dollar value used in calculations also steps down around the same time. Systems contracted and installed under the prior rules before the change date may differ—confirm timing with your installer.
Who qualifies for the Solar Victoria Solar Homes rebate?
Typical eligibility requires you to be the owner-occupier, have a combined household taxable income under $210,000, a property value under $3 million, and not have received a Solar Homes PV rebate on that address in the prior 10 years. All criteria must be met. Programs and caps change—verify current rules on solar.vic.gov.au before you sign.
Does xTechs help with rebate paperwork?
Yes. xTechs Renewables designs compliant Victorian installs, uses CEC-approved products where required, and documents STC assignment and Solar Victoria steps as part of your quote and handover. Your proposal states estimated incentives; final amounts depend on government confirmation at the time of install.
Can I get rebates on a battery-only retrofit?
Federal battery STCs can apply to eligible new battery systems connected to existing or new solar, subject to Clean Energy Regulator rules, product listing, and installer requirements. Solar Victoria’s PV rebate is for new solar panels—not a battery-only install. We assess your site and outline which incentives apply before you commit.