Mid-Scale Solar
STCs Now Available for Commercial Solar Systems over 100kW to 1MW
Systems over 100kW, installed from 1 October 2026, can now create STCs.
Incentives will be available mid-to-late November.
“We expect a lot of systems to get installed over the next four years because this is our window of opportunity.“
Caroline Bennett, Chief Innovation Officer, Green Energy Group
We pay you on approval
We pay you as soon as your certificates are approved, keeping your cashflow moving.
Built in-house, built around you
We build our own app, so we can keep improving it to make your job easier.
550+ power stations accredited
We’ve worked with Australia’s largest solar clients. Commercial Solar is familiar ground.
Estimate your Incentives for Mid-Scale Solar Projects
(STCs, PRCs and VEECs)
Enter your project details for an indicative incentive amount and returns. Depending on your project, VEECs and PRCs might be added.
Estimate your incentives
Stack every scheme you qualify for automatically, or pick one to work through on its own.
Or choose a single scheme manually
INSTALL DETAILS
Zone 4 · 1.185
0 if no solar
AUTO Detected from what's above — not a choice to make
Advanced settings — VEU region & pathway
COMBINED ESTIMATE
INSTALL DETAILS
Zone 4 · rating factor 1.185
Slider runs 1 kW to 1 MW on a log scale — type an exact figure below it for precise entry.
ESTIMATE
INSTALL DETAILS
Only Victorian postcodes (3xxx) in STC zone 3 or 4 are eligible.
VEU Activity 47 applies for 30–200kW systems.
ESTIMATE
INSTALL DETAILS
Usable capacity assumed at 90% of nominal.
Not used for BESS1 (residential).
Doesn't affect BESS1 — its rate is fixed either way.
ESTIMATE
Disclaimer: This calculator is for providing estimates only and should not be used for financial or compliance advice. If you have any questions regarding the use of this calculator, please contact the Green Energy Trading operations team.
The new numbers make stalled deals close. You now have the ability to install the system you should have installed in the first place.
What’s changing
The SRES cap for STCs has lifted from 100kW to 1MW, and the regulations are in place.
Systems installed on or after 1 October 2026 are eligible.
STC claims for mid-scale systems open mid-to-late November 2026, once the regulator’s systems are ready. October installs aren’t lost. They’re claimed when the window opens.
Deeming is fixed at five years to 31 December 2030. It won’t step down each year the way small-scale deeming does.
Sites with more than 1MW of solar in total get no STCs. LGCs remain the route.
What’s in it for you and your customers?
For years, commercial systems were capped at 100kW because that's where the returns peaked. Now businesses can size solar to their actual load, up to 1MW. That covers agriculture, food and beverage processing, and smaller manufacturers alike.
For many sites, STCs cover around 20% of system cost, bringing payback under four years. That opens conversations that used to stall, like a tenant on a seven-year lease talking to their landlord about solar.
Visit us at All-Energy 2026
Booth CC18 - 28-29 October - Melbourne
Bring a project you're quoting and we'll work through it with you on the stand.
Is your project eligible?
The test is the total solar at the site, not just the new system. That includes existing related solar and any accredited power station on the same or adjoining sites.
Total related solar capacity over 100kW and up to 1MW
Installed from 1 October 2026
Meets planning, network and technical requirements
Quick examples
| Site | Total | Result |
|---|---|---|
| 80kW existing + 40kW new | 120kW | Eligible |
| 500kW standalone | 500kW | Eligible |
| 400kW existing + 700kW new | 1.1MW | Not eligible |
What you’ll need
Before Install
Planning or development approval, or evidence that it’s exempt or complying development
Network connection approval from your DNSP
An engineering or structural report, where one’s required
A single line diagram
On the job
SAA-accredited installer
Licensed electrical work
CEC-approved panels and inverter on the commissioning date
Scanned serials and the electrical compliance certificate
No longer needed
Retailer statement
Accredited designer sign-off
Commercial isn't residential at a bigger size, and the compliance reflects this higher complexity.
Our platform Geo/Onsite helps you with evidence collection. Our local team checks everything with you, so you can get it right the first time
Why Green Energy Trading?
You know when you’re getting paid.
We pay ahead, on terms that suit your business. You’ll know you’re getting paid and exactly when, so your cash flow never waits on the regulator.
Right the first time,
with people on the phone
Your crews and subcontractors get trained and supported through the evidence requirements.
Geo/Onsite helps you through the motions, and there’s always someone at the end of the phone to help sort you out,
Straight advice across every scheme
As your one-stop shop, we’ll tell you which incentive suits you. We’ve been here a long time. We’re solid, we’re trusted, and we do what we say we’re going to do.
Partnering with us is more than just being paid for incentives. It’s education, it’s what comes next.
It’s having a partner who fights for your best interest
Mid-scale solar STC FAQs
-
Solar systems over 100kW and up to 1MW installed on or after 1 October 2026 can create small-scale technology certificates (STCs) under the expanded SRES. Claims open mid-to-late November 2026.
-
For commercial solar systems between 100kW and 1MW, STCs typically cover around 20% of the upfront system cost. That brings payback under four years for some projects. Use our mid-scale solar STC calculator to get an indicative STC count for your project.
-
No. Systems installed from 1 October 2026 are still eligible. Their STCs are claimed once the Clean Energy Regulator opens the window in mid-to-late November.
-
No. Only systems installed on or after 1 October 2026 are eligible. Existing solar on the same or adjoining site still counts toward the 1MW total capacity limit for any new system.
-
Yes, where the project qualifies. STCs are a federal scheme, so they can be claimed alongside VEECs in Victoria and Peak Reduction Certificates (PRCs) in NSW. Within the VEEC scheme, Activity 47 and SMM4 can't be combined.
-
Five years, fixed, to 31 December 2030. Unlike small-scale solar deeming, it doesn't step down each year.
-
Yes. Install from 1 October 2026 and collect the evidence as you go. We'll lodge your STC claims when the window opens.
Get the incentives on your next Mid-Scale solar project.
Looking for Incentives on your Mid-Scale Solar project? Fill out the form below and we’ll reach out.
Meet the Team
-
Caroline Bennett
CHIEF INNOVATION OFFICER, GREEN ENERGY GROUP
Caroline works across the group with large energy users and some of Australia's biggest solar businesses.
For mid-scale projects, she connects installers with the right clients and the right incentive pathway.
-
Tiana Bergmans
OPERATIONS MANAGER
Tiana joined Green Energy Trading in 2022 in the Commercial Lighting team and went on to lead the Solar team. She recently led the team behind the Battery STC launch, guiding clients through new requirements and making sure they were paid on time.
She now oversees operations across the business and holds a Master of Environment specialising in governance, policy and regulation.
-
Alastair Matcott
CUSTOMER ENGAGEMENT MANAGER
Alastair joined the team in 2017 after looking for opportunities in the energy and sustainability sector. His enthusiasm, customer service and team leadership served him well in his roles as Operations Manager, Victorian Lighting Manager, and Project Manager of the company's award-winning rental initiative Better Homes & Carbon.
He now brings those skills to business development, serving as GET's Customer Engagement Manager.