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STC compliance, photos, audits, rejections

What is an installer written statement for STCs?

Short answer

An installer written statement is a signed declaration from the accredited installer confirming that they installed or supervised the system and that it complies with the standards. It may be requested in an audit or as part of a claim, so keep a template ready.

Written and checked by the Energy Merchants desk · Reviewed 2 October 2026 · For installers

When the Clean Energy Regulator or a trader needs to confirm who stood behind an installation, the installer’s written statement is the document they ask for.

What it is for

The scheme relies on accredited installers being responsible for the work. The statement records, in the installer’s own words, what they did, when and where. In audits it supports the photos and the registry data.

What it should contain

  • The installer’s full name and accreditation number.
  • The site address and the date of installation.
  • Whether they carried out or directly supervised the work, and how.
  • Confirmation that the installation meets the relevant standards.
  • Product details as installed, such as panels, inverter and any battery.
  • Their signature and the date.

The exact wording or form required can change, so use the version your trader or the Regulator specifies.

When it gets requested

Typically during an audit, or when a claim has been flagged and the Regulator wants proof of attendance. It can also be part of an investigation of a supervisor-and-crew arrangement, linked to attendance requirements.

From the desk: Never sign a statement for a job you did not attend. The statement is a legal document, and a false one puts your accreditation at risk.

How to handle it day to day

  1. Put a statement template in your job pack.
  2. Have the accredited installer complete and sign it at handover.
  3. File it with the photos and serials.
  4. Send a copy to your trader if they ask.

Keeping it believable

A statement works best when it is specific. A line such as ‘I was on site from 7:30 am to 3:15 pm on 14 March, installed the array and wiring with two crew members, and commissioned the system at 2:45 pm’ is far more credible than a generic template. Specific, consistent details that match photos and timestamps are what an auditor looks for. Vague wording that could apply to any job can raise more questions than it answers.

What this means for installers

A signed statement is cheap protection. Combined with good photos, it helps you through an audit. See how STC audits work and the photo requirements. More guides sit in the resources hub, and the STC trading page explains how claims are lodged. Accreditation basics are in do electricians need solar accreditation.

Follow-up questions

People also ask

Do I need one for every job?
Requirements can change, so check what the Clean Energy Regulator and your trader currently ask for. Keeping a signed statement per job is a good habit.
Can someone else sign for me?
No. The accredited installer who did or supervised the work must make the statement.

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