The New Commercial Solar Rebate: What Adelaide Businesses Need to Know
The Federal Government has confirmed the biggest expansion of the commercial solar rebate since 2011 — lifting the eligibility cap from 100kW to 1MW. Here’s what it means for your Adelaide business, and how to find out what you could save.
The New Commercial Solar Rebate
Australia’s Small-scale Renewable Energy Scheme (SRES) has, since 2011, only applied to solar systems up to 100kW, locking most medium-sized commercial buildings out of a rebate that households have used for over a decade.
That’s changing. From 1 October 2026, the eligibility threshold rises tenfold to 1 megawatt, opening the scheme to warehouses, factories, shopping centres, schools, farms and offices across South Australia for the first time.
For Adelaide businesses, this lands at a genuinely good moment: equipment costs are near record lows, electricity prices remain high, and South Australia’s daytime-heavy commercial load profile is exactly the kind of usage pattern solar is built to offset.
What's Actually Changing
**Old Threshold**
Solar rebates (STCs) only applied to systems up to 100kW — ruling out most mid-sized commercial roofs.
**New Threshold (from 1 Oct 2026)**
Systems up to 1MW now qualify — a tenfold increase, covering the vast majority of commercial rooftops.
**What It’s Worth**
Government estimates put the savings at roughly 20% off the upfront cost of a commercial system, which is very significant for businesses.
How Much Could Your Business Save?
The rebate is applied as an upfront discount on your system cost by your installer — you don’t need to claim it back separately. Indicative government figures give a sense of scale:
- * **~250kW system** — around $68,000 off the upfront cost
- * **~850kW system** — around $232,000 off the upfront cost
Actual savings depend on system size, your STC zone, and the STC market price at the time of installation. If you’re adding battery storage, the separate Cheaper Home Batteries Program can stack on top, worth roughly 30% of your battery cost.
(Eligibility and start dates are subject to final legislation — our team tracks the rollout closely and can confirm current status for your project.)
Why Adelaide Businesses Are Well Placed
South Australia already has some of the country’s highest electricity tariffs, which shortens the payback period on commercial solar considerably. Combine that with the SRES expansion and a few local factors, and the case for Adelaide businesses is stronger than it’s been in years:
- High daytime tariffs: mean self-consuming solar power directly offsets your most expensive electricity.
- SA Power Networks (SAPN): has established Dynamic Export and Smarter Homes frameworks that can streamline grid connection approvals for eligible systems.
- Businesses with daytime-heavy operating hours: offices, retail, food production, cold storage, manufacturing — see the fastest payback, since generation lines up with consumption.
- Building owners: get the cleanest path to the rebate, since eligibility and payback are tied to who carries the long-term asset.
How Generate Energy Gets You There
**1. Site Assessment**
We review your roof, energy usage and network capacity to confirm eligibility and sizing.
**2. Rebate Calculation**
We model your STC entitlement and show exactly what it takes off your quote.
**3. Design & Approval**
We design your system and manage SAPN grid connection paperwork.
**4. Installation**
Our accredited team installs and commissions your system; rebate applied upfront.
Frequently Asked Questions
When does the new commercial solar rebate start?
The expanded scheme is expected to commence on 1 October 2026, raising the eligibility cap from 100kW to 1MW. The exact date is subject to final legislation, and we monitor updates as they’re confirmed.
Is my Adelaide business eligible?
If your commercial solar system is under 1MW and you’re installing after the scheme takes effect, you’re likely eligible. Building ownership, roof suitability and grid capacity all factor in — we confirm this during a free site assessment.
How is the rebate applied?
The rebate is calculated in Small-scale Technology Certificates (STCs) and applied as an upfront discount on your quoted system price by your installer — there’s no separate claim process for you to manage.
Can I combine this with a battery rebate?
Yes. The solar rebate applies to your panels and inverter, while the separate Cheaper Home Batteries Program can subsidise around 30% of an eligible battery system installed alongside it.
What size system can benefit most?
Businesses with high daytime energy use — offices, retail, food production, cold storage and manufacturing — tend to see the fastest payback, since their consumption lines up with solar generation hours.
