Installer (STCs)

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

The installer, in STC terms, is the individual who installed the system and takes responsibility for its compliance. They are not just the business name on the invoice. The claim names a person, and that person’s credentials are checked.

What accreditation is needed

Installing a solar system that creates STCs requires accreditation by Solar Accreditation Australia, formerly the CEC scheme, along with a suitable electrical licence for the state. For batteries under the Cheaper Home Batteries Program, an accredited installer is also required. See SAA.

In practice

Several things on the file should name the same person: the written statement, the compliance certificate and the creation. The accreditation must be current on the installation date, not just today. A lapsed accreditation on the date of installation can invalidate the STCs for that job, regardless of the quality of the work.

Many businesses have several installers. Make sure the person who attended the job is the person named. See installer written statement.

Worked example

A crew of three completes a battery install. The licensed electrician signs the certificate and the accredited installer completes the written statement. If the accredited installer was not on site and the work was supervised in a way the rules do not allow, the claim fails an audit. Check who is allowed to do what.

Common confusion

The installer is not the retailer who sold the system, and not the registered agent who lodged the STCs. They can be the same business, but they are separate roles. See solar retailer and registered agent.

See STC trading, how STC audits work and the glossary.