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How to check an STC trader is legitimate (registered agent, ABN, track record)

Short answer

Check the trader's ABN on the Australian Business Register, confirm its status with the Clean Energy Regulator's registered agents information, ask for written terms, and look at its trading history and references. Be wary of rates far above the market and anything that cannot be written down.

Written and checked by the Energy Merchants desk · Reviewed 3 October 2026 · For installers

Three searches, one checklist: how do I check a trader is legitimate, is my trader a registered agent and does the ABN check out. Do the checks in this order.

1. ABN and entity

Search the trader’s ABN on ABN Lookup, which is run by the Australian Business Register. Confirm:

  • the ABN is active
  • the legal name matches the name on the contract and the RCTI
  • the entity type, such as a company or trust
  • GST registration, where relevant

A trader with no ABN, or one that will not give it, stops here.

2. Registered agent status

The Clean Energy Regulator publishes information about registered agents, who help individuals and small businesses with the creation of STCs. Not every trader is a registered agent, and the status matters most if the trader acts as the agent for your customers. Check the CER’s registered agents information, and ask the trader to explain its status. A registered agent can be suspended, as Greenbot was in 2024, so check the current position rather than relying on a logo.

3. Track record

  • How long has the entity traded?
  • Is the trader a member of an industry body, such as the Smart Energy Council?
  • Can it give you two installer references you can call?
  • What do other installers say? Read STC trader reviews with a pinch of salt and check the dates.

4. Terms in writing

A legitimate trader gives you written terms: rate or how it is set, payment trigger and timing, fees, recall rules, how disputes are resolved. See the contract checklist.

5. How it makes money

Every trader earns something, from a fee, a spread or both. If you cannot work out which, ask. See what the catch is with no-fee trading.

6. The money flow

Does the trader pay from an account in its own name? Are remittances itemised? Does it pay on time? A trader that pays one week late for a month is telling you something. See what to do when payment is late.

Warning signs

Sign Why it matters
Rate far above spot with no explanation Can signal a trader paying early installers with later installers’ money
Pressure to transfer certificates before terms are agreed You lose control
No named contact Nobody to chase
Changed bank details by email A common fraud pattern
Unwilling to put terms in writing Self-explanatory
From the desk: Start with a small first batch. Lodge a handful of claims, see how and when you are paid, then raise the volume. A trader that is confident in its process will not mind.

What this means for installers

Due diligence is a one-hour task that protects months of cash. Do the ABN check, confirm status with the CER, get the terms in writing and test with a small batch. Our guide to choosing a certificate trader expands the checklist, and STC scams to avoid covers the worst cases.

Energy Merchants publishes its rate daily on pricing and explains the process at how it works, so you can check us the same way.

Follow-up questions

People also ask

Where do I check if a trader is a registered agent?
The Clean Energy Regulator publishes information on registered agents on its website. Confirm status there, and ask the trader for its details.
How do I check an ABN?
Search the ABN on the Australian Business Register (ABN Lookup) and check the legal name, status and GST registration against the trader's paperwork.
What is the biggest red flag?
A rate well above the visible market with vague terms. If you cannot see how they make money, ask.

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