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Commercial 1Mw
Your roof was never the limit. The rebate was.
From 1 October 2026 the federal rebate covers commercial systems up to 1MW — ten times the old cap, and around 20% off the installed cost. TSBA has 106.4MW in the ground and runs the grid approvals, STC claims and landlord consents in-house.
Look at the size of the systems we've been installing.
A coffee roastery: 100kW. A 24-hour gym: 100kW. A franchised hardware store: 100kW. Completely different businesses, completely different roofs and load profiles, the same number every time. That isn't a coincidence — it's the ceiling.
Across Australia more than 1,200 businesses a year install in the 90–100kW bracket, sized to the regulation rather than to their consumption. Above it, fewer than 1,200 mid-scale systems went in across the entire 15 years to 2025. We've spent years designing right up against that line and stopping.
From 1 October, we stop stopping. We've already delivered 300kW across two aged care facilities and 200kW on a hardware retailer's main site, and we have 600kW currently in delivery across two Southeast Queensland sites — so the capability above the cap is proven, not theoretical.
Monitored results, not modelled promises.
A sample of recent commercial work. Where figures are shown they come from monitored data after handover, measured against that site's original usage and tariff. Client names and site details are withheld.
Coffee roastery & café
Installed over 17 days. Grid application, STC claim, monitoring setup and an ongoing bill-review schedule all handled by TSBA.
24-hour gym
Heavy continuous load from training equipment, hot water and air conditioning around the clock. Seven-day install program.
Day surgery
A site where reliable power matters as much as the bill. The battery system covers the site's electricity bill in full.
Two residential care facilities
Continuous demand from climate control, laundry, kitchens and medical equipment — one of the closest matches between site load and solar generation in commercial property.
Hardware retailer, multi-site
A main trading site at 200 kW with 100 kW systems rolled out across franchised stores — one design standard, one set of paperwork, one point of contact across the group.
Two sites, one client
The largest project TSBA has taken on to date. Details are withheld until the project reaches handover.
Projects don't stall on the install. They stall on the paperwork.
Grid approval, rebate claims, finance and landlord consent are the four points where a commercial solar project usually goes quiet for weeks. All four sit with us, in a fixed sequence, so you're never the one chasing a form.
This matters more after 1 October than before it. The government has asked the AEMC to speed up network approvals for C&I solar — but until those rules change, connection assessment remains the longest lead item on a mid-scale system. We lodge it in-house and we lodge it early.
Seventeen steps. Four phases. One point of contact.
Qualify & design
- Energy use, site and eligibility
- Property and shade assessment
- PVSell modelling against current and future load
- Design presented and signed off
Approvals
- Order confirmed, paperwork lodged
- Welcome call, timeline set
- Finance application support
- Landlord or body corporate consent
- DNSP grid pre-approval
Install
- Stock allocated, date confirmed
- Licensed, CEC-accredited crews
- Site cleaned down, waste removed
- Post-install confirmation call
Compliance & handover
- Commissioning and system testing
- STC claim submitted
- NETCC agreement filed
- Warranty and compliance pack issued
What you actually do: approve the design, confirm the install date, and be contactable on handover day. Everything else — eligibility, finance, consent, grid approval, STCs, commissioning paperwork — sits with us.
The documentation your procurement team will ask for.
Full policy documentation, installer licences and accreditation records are supplied with tender submissions on request.
| Public & product liability | $20,000,000 combined, single policy |
| Insurers | Certain Underwriters at Lloyd's, led by Asta Managing Agency Limited, Syndicate 4747 |
| Underwriting agency | High Street Underwriting Agency Pty Limited |
| Policy expiry | 30 June 2027 |
| Clean Energy Council | CEC member — Network tier |
| NETCC | Approved seller. Agreement issued on every job |
| Installation | Licensed electrical contractors, CEC-accredited |
| Workers compensation | Held by each subcontracted installer |
| Handover documentation | Certificate of Electrical Safety, commissioning records, warranty pack |
| Warranty | 30 years workmanship and panels; 10 years inverters and batteries |
| ABN | 89 684 265 129 — TSBA Pty Ltd |
What the rebate is worth — and what waiting costs.
STCs are created against a deeming period: the years left until the scheme ends on 31 December 2030. It drops by one year every 1 January. A system installed in 2026 is deemed over 5 years. The identical system installed in 2027 is deemed over 4 — 20% fewer certificates for exactly the same hardware on exactly the same roof.
| System | Installed 2026 5-year deeming |
Installed 2027 4-year deeming |
Difference |
|---|---|---|---|
| 250 kW | ~$68,000 | ~$54,400 | −$13,600 |
| 500 kW | ~$136,000 | ~$108,800 | −$27,200 |
| 850 kW | ~$232,000 | ~$185,600 | −$46,400 |
Based on the federal government's own worked examples, which run at roughly $272 per kW installed — a useful rule of thumb for sizing your own estimate. Indicative only: certificate volume falls by a fixed 20% between 2026 and 2027, and the dollar figures assume the STC spot price holds steady. Final entitlement depends on system size, postcode zone rating and installation date. We'll model your actual site.
The best rate is available for about 13 weeks.
The 1MW cap opens on 1 October 2026. The deeming period drops from 5 years to 4 on 1 January 2027. Between those two dates there are roughly thirteen weeks in which a 100kW–1MW system attracts both the expanded eligibility and the highest deeming rate it will ever have.
After that the value only goes one way. By 2028 the deeming period is 3 years, and an 850kW system's incentive has fallen to around $139,000 — some $93,000 below what the same system attracts this year.
A commercial project needs interval data, roof assessment, modelling, finance, consent and a DNSP connection approval before anyone gets on a roof. Thirteen weeks is not a long runway for that sequence. Starting now is what puts you inside the window.
Be ready on day one, not in the queue behind everyone else.
On 1 October, hundreds of thousands of businesses become eligible at once. Installer capacity, structural assessments and network connection approvals are all finite — and the connection queue is the one you can't buy your way to the front of.
Register now and we do the groundwork before the start date: interval data analysis, roof assessment, PVSell modelling, an indicative system size and a modelled STC value. When the scheme opens, you proceed. You're not starting the conversation.
Free, no obligation. If it's easier, send us a recent electricity bill — one is enough to get started — or call 0432 509 715.