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Installer business, licensing, insurance and tooling

How does an STC trading portal work for solar installers?

Short answer

An STC portal is the online front door to a trader: you upload job details, photos and forms, the trader checks and lodges the claim, and the portal shows status and payment. Features, an API or white-labelling are extras; clean evidence and fast settlement matter more.

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

Searches for “STC portal”, “STC trading portal”, portal features, API and white-label all describe one thing seen from different angles: the software layer between your job and the money.

The basic flow

  1. You complete the install and collect the signed assignment form, installer statement and photos.
  2. You upload or enter the job in the portal: system details, serial numbers, owner details, evidence.
  3. The trader checks the pack, creates the STCs in the REC Registry (as your registered agent) and submits them for validation.
  4. Once the certificates clear, the trader transfers them and pays you.

For the registry steps in detail, see the STC submission process and what a registered agent does.

Features worth having

  • Job entry that validates required fields before submission
  • Photo upload from a phone, with a checklist per system type
  • Live claim status, so you are not chasing by phone
  • Rate shown at lodgement and settled amount per job
  • Downloadable RCTI and payment history for your bookkeeper (see RCTI, GST and ABN)
  • Bulk upload for crews that lodge many jobs at once

API and white-label

An API means your job-management software can push jobs to the trader without re-keying. It is useful for installers with their own systems and for software vendors. White-label means the portal wears your brand, which suits larger installer groups or franchise networks. Neither changes the commercial question: who pays, how fast and at what rate.

What a portal cannot fix

A slick upload screen will not rescue weak evidence or a late payment. The factors that move your cash are the rate, the settlement time and the rejection rate. Read why STC payments are delayed and how long payment should take before you judge a portal on features.

From the desk: ask any trader three questions: what rate is locked and when, how long from clean claim to cash, and who on the team answers when a claim stalls.

A quick evaluation checklist

Before you sign up, run one real job through the portal start to finish, including a photo upload from a phone on mobile data. Note how many screens it takes, whether it flags a missing field, and how quickly someone replies when you ask a question. Then check the rate shown against the published rate and ask for the settled amount on a test claim. A portal that is easy to demo but slow to answer will cost you more in chasing than it saves in clicking.

What this means for installers

Choose the portal that is quick on a phone and honest about status. Energy Merchants lodges through a partner portal with a compliance desk pre-checking each claim; rates are published daily on pricing, and you can start trading once your details are verified. More on tooling and cash flow sits in the installer business hub.

Follow-up questions

People also ask

Is a portal the same as the Clean Energy Regulator's REC Registry?
No. The REC Registry is the government system where STCs are created and transferred. A trader's portal is how you send the trader what it needs to do that on your behalf.
Do small installers need an API?
Rarely. An API lets software send jobs straight into a trader's system. It pays off when you lodge many jobs a week from your own job-management tool.
What is a white-label portal?
A portal that carries your brand rather than the trader's, usually offered to installer groups or software vendors. It changes the look, not who creates and settles the certificates.

Got a claim to lodge this week?

Sign up today. Your account manager calls with your rate card and your first claim can be settled within days.

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