Managing Solar Subcontractors Without the Chaos
There is a moment in every growing solar install business where the maths stops working. You have got more jobs than your crew can install, the diary is booked three weeks out, and customers who said yes a fortnight ago are starting to go quiet. You either turn work away or you bring in subbies. Almost everyone brings in subbies.
I have watched this play out from the supply and admin side for twenty years. The install businesses that scale past one or two crews almost always do it on the back of subcontract labour, because a flexible crew you can call on when the work is there beats a permanent wage you have to feed when it is not. That part is just economics. What nobody warns you about is that the day you add subbies, you also inherit a whole new category of problems the business never had before, and most of them are not about the install at all. They are about communication.
This article is about what actually breaks when you bring subcontractors in, and the lightweight systems that fix it without turning you into a full-time job manager chained to your phone.
Why subbies are unavoidable past a certain volume
A permanent crew is a fixed cost. Wages, super, vehicles, tickets, downtime between jobs, the lot. If your pipeline is lumpy, and in this trade it always is, a permanent crew is expensive insurance against a busy month and dead weight in a quiet one.
Subcontract crews flip that. You pay for capacity when you have the work, and you do not when you do not. For a business growing through an unpredictable run of sales, that flexibility is the difference between saying yes to volume and choking on it.
The catch is that subbies are not your employees, and that distinction is not just a feeling. The way a working arrangement is structured determines whether someone is genuinely a contractor or an employee in disguise, and getting that wrong carries real liability for sham contracting and unpaid entitlements (Fair Work Ombudsman, 2024). The Australian Taxation Office applies its own multi-factor test for the same question around PAYG and super (Australian Taxation Office, 2024). Before you scale on subcontract labour, get the arrangement right on paper. That part is worth a conversation with your accountant, not a guess.
But assume you have done that. The arrangement is clean. The work still falls over, and here is where.
What actually breaks: the four communication failures
When you ran every job yourself, the briefing lived in your head. You knew the access, the switchboard, the panel layout, the customer’s dog, the fact that the roof was tile and you needed the right feet. None of that was written down because it did not need to be. You were on site.
The moment a subbie does the install, every piece of that knowledge has to travel from your head to a crew you are not standing next to. Four handoffs break the most.
The job briefing. The crew turns up knowing the address and not much else. They do not know the system design changed after the site inspection, that the customer works nights and wants no noise before nine, or that the meter box is round the back behind a locked gate. A briefing that lives in a phone call gets half-remembered and never written down.
The materials list. The crew arrives without the right rail, the right number of optimisers, or the correct inverter because the pick list never made it to them cleanly. Now you are paying a crew to stand on a roof while someone drives to the wholesaler.
On-site documentation. Photos not taken. Serial numbers not recorded. The before, during and after shots that the install actually requires are skipped because nobody told the crew exactly what was needed, and they are not the ones who will be chasing it later.
Sign-off capture. The customer signs nothing, or signs something the office never sees. The job is physically done and administratively half-finished, which as you will see is a genuine problem when certificates are involved.
Every one of these turns into the same three outcomes: delays, callbacks, and warranty exposure. A missed access detail is a wasted morning. A skipped photo is a callback or a compliance gap. A missing sign-off is cash you cannot claim yet. None of them are install-skill problems. The subbie might be the best installer you have ever used. They are information problems, and information is your job, not theirs.
The visibility problem nobody costs out
Here is the part that quietly hurts the most. When you did the installs yourself, you knew the status of every job without thinking about it. Booked, on the roof, done, signed, submitted. It lived in your head as a running picture.
The day subbies take over the install, that picture goes dark. You find out a job is finished when the crew texts you, or when the customer rings asking where their paperwork is, or when you go looking a week later. You have lost the one thing that let you run the business by feel.
That blindness has a cost even though it never shows up on an invoice. You cannot tell a customer when their install is happening because you are not sure yourself. You cannot start the STC paperwork because you do not know the job is done. You cannot bring the next job forward because you cannot see the gap. The owner who used to know everything now knows nothing until someone tells them, and in a busy week nobody tells them.
The access trap: everything or nothing
Most businesses solve the subbie problem in one of two bad ways.
The first is to give the crew access to everything. Open up the whole system, the customer list, the pricing, the margins, the supplier accounts, and let them find what they need. It works right up until a subbie who also works for your competitor has a full view of your customer base and what you charge. That is not paranoia, that is just what happens when access is all-or-nothing and you pick “all”.
The second is to give them nothing and manage the whole relationship by phone and WhatsApp. A thread per job, photos buried in a chat, the briefing typed out at six in the morning, the sign-off photographed and lost. It feels controlled because you are across every message. It is actually chaos, because none of it is anywhere you can find it later and none of it survives the crew changing.
The right answer is neither. A subbie needs a scoped view: this job, this address, this design, this materials list, this is what to photograph, sign here. They do not need your customer database and they do not need your pricing. They need everything about the work in front of them and nothing about the business behind it. Scoped access is the whole game, and most tools force you to choose between too much and too little.
What a job briefing looks like when it works
A subcontractor needs five things before they leave the yard, and they should get them without a phone call.
- Where, and how to get in. Address, access notes, gate codes, where the meter and switchboard are, parking.
- What is going on the roof. The final system design, panel count and layout, inverter, mounting type for the roof material.
- What to bring. The materials list for this job, so the ute is loaded once and correctly.
- What to capture. The exact photos, serials and notes the job requires, listed so nothing is left to memory.
- How to close it out. Customer sign-off, and where it goes.
Deliver those five cleanly and the crew can do the whole job without ringing you once. If a crew cannot walk away from the briefing and complete the job without asking questions, the briefing has more work to do (Incident Prevention, n.d.).
Documentation at the install, not from the office the next morning
This is the discipline that separates a job that is done from a job that is provably done.
Photos, serial numbers, sign-offs and site notes have to be captured at the time of install, by the crew on the roof, not reconstructed from the office the next morning. The morning-after version is always worse. The serials are guessed, the photos are missing, the customer is at work and cannot sign. You end up driving back out, or worse, claiming on incomplete evidence.
Capture at the point of work is also what an audit assumes. The Clean Energy Regulator runs an inspection and compliance program on small-scale installations, and the evidence trail is expected to reflect the install as it happened (Clean Energy Regulator, 2024a). A job documented in real time stands up. A job documented from memory is a liability waiting for a knock.
If you want the back-office side of this written up properly, our piece on tightening your STC paperwork so the cash is not stuck goes deeper on the admin discipline that turns a finished install into paid-out certificates.
STC exposure when a subbie does the install
This is where a lot of operators get a nasty surprise, so let me be precise about it.
Small-scale Technology Certificates, or STCs, are not a rebate. They are tradeable certificates created from the deemed generation of an eligible system, which liable entities under the Renewable Energy Target must buy and surrender to the Clean Energy Regulator to meet their obligations (Clean Energy Regulator, 2024b). The customer assigns their right to create the certificates in exchange for an up-front discount, which is why it feels like a rebate to the buyer but is not one.
The part that matters for subbies: the certificates can only be created where an accredited installer and designer have been responsible for the installation, and that accredited person signs a written statement attesting to it. Accreditation for installers and designers is administered through the approved scheme, which transitioned to Solar Accreditation Australia in 2024 (Solar Accreditation Australia, 2024). The system must also use approved components (Clean Energy Council, 2024).
So when a subcontract crew does the install, the accountability does not transfer with the work. The accredited installer named on the job carries the documentation obligation, and the written statement they sign has to be true. If the crew on site is not the accredited person, the supervision and evidence requirements still have to be met and proven. When the photos are missing or the sign-off never happened, it is not the subbie who answers to the Regulator. It is the accredited installer and the business whose name is on the claim. Research and audit activity in the scheme have repeatedly shown that paperwork gaps, not bad installs, are what trip operators up (Clean Energy Regulator, 2024a). Loose documentation on a subbie job is therefore not just untidy. It is regulatory exposure with your name on it.
The tool I am building because I needed it
Every problem above is a coordination problem, and coordination is exactly what spreadsheets, group chats and a good memory stop being able to do once subbies are in the mix.
CurrentFlow is the platform I am building because I watched this break too many times to count. The idea is one system where the briefing, the materials list, the on-site documentation and the sign-off live together, and where a subcontractor gets a scoped view of just their job, not your whole business. It is designed to give the owner back the visibility they lose the day they stop doing the installs themselves. It is pre-launch, so I am not going to pretend it is finished. I am going to ask you to tell me whether this is the problem worth solving for you.
If your last subbie disaster is still fresh, get on the early access list and help shape what gets built. The advice above stands on its own either way. Fix the four handoffs, scope the access, and capture the documentation at the roof, not from the desk. Do that and subbies become the thing that lets you grow instead of the thing that keeps you up at night.
References
Australian Taxation Office. (2024). Employee or independent contractor. Australian Taxation Office.
Clean Energy Council. (2024). Approved products and approved sellers under the Solar Retailer Code of Conduct. Clean Energy Council.
Clean Energy Regulator. (2024a). Inspections and compliance for small-scale solar installations. Australian Government, Clean Energy Regulator.
Clean Energy Regulator. (2024b). Small-scale Technology Certificates and the Small-scale Renewable Energy Scheme. Australian Government, Clean Energy Regulator.
Fair Work Ombudsman. (2024). Independent contractors and sham contracting. Australian Government, Fair Work Ombudsman.
Solar Accreditation Australia. (2024). Installer and designer accreditation requirements. Solar Accreditation Australia.
FAQ
Are solar subcontractors employees or contractors?
It depends entirely on how the working arrangement is structured, not on what you call it. Both the Fair Work Ombudsman and the Australian Taxation Office apply multi-factor tests to decide, and getting it wrong exposes you to sham contracting findings and unpaid entitlements (Fair Work Ombudsman, 2024; Australian Taxation Office, 2024). Before you scale on subcontract labour, get the arrangement reviewed by your accountant. This is one to get right on paper first.
Who is responsible for STC documentation when a subbie does the install?
The accredited installer named on the job and the business making the claim. STCs can only be created where an accredited installer and designer have been responsible for the installation, and that accredited person signs a written statement attesting to it (Clean Energy Regulator, 2024b; Solar Accreditation Australia, 2024). The accountability does not transfer to the subcontract crew. If the documentation is missing or wrong, you answer to the Regulator, not them.
What is the minimum a subcontractor needs before they leave for a job?
Five things: where and how to get access, the final system design, the materials list for that job, exactly what to photograph and record, and how to capture the customer sign-off. If a competent crew cannot complete the install from the briefing alone, the briefing is not finished. Deliver all five cleanly and they should not need to ring you once.
Should I give subcontractors access to my whole system?
No. Opening up your full system exposes your customer list and pricing, which is a real risk if that crew also works for a competitor. Managing everything by phone and chat is the opposite failure, because nothing is findable later. The right answer is a scoped view: everything about the job in front of them, nothing about the business behind it.
Why capture install documentation on site instead of the next day?
Because the next-day version is always worse. Serials get guessed, photos go missing, and the customer is at work and cannot sign. Captured in real time, the evidence trail reflects the install as it actually happened, which is exactly what an audit expects (Clean Energy Regulator, 2024a). Reconstructed from memory, it is a liability waiting for a knock.