Victorian households installing a new solar inverter, altering an existing system or adding certain network-controlled equipment now need to account for an updated communication standard. CitiPower and Powercor confirmed on 2 November that solar inverters installed in Victoria from 1 November 2026 must comply with CSIP-AUS 1.2, tested to SA TS 5573:2025.

For most homeowners this is an installer and equipment-selection issue, not something they need to configure themselves. It matters before equipment is purchased, particularly if a quote specifies an older inverter model.

Why does the standard matter?

CSIP-AUS enables solar inverters and other distributed energy resources to communicate with electricity networks. It supports network-controlled functions such as emergency solar backstop and flexible exports, which help distributors manage high rooftop-solar output and changing local demand.

CitiPower and Powercor state that all Victorian electricity distributors are required to comply with the updated standard. Specific connection and portal requirements should still be checked with the distributor serving the property.

What changes for new installations?

Before installing an inverter or applying for a solar alteration, CitiPower and Powercor instruct installers to verify that the model is listed as CSIP-AUS 1.2 compliant on both the Clean Energy Council approved inverter list and their own approved inverter list.

From 1 November, non-compliant inverter models cannot be submitted through their solar alteration portal. Some existing models may become compliant through manufacturer-provided firmware updates, but this is model-specific. An update should not be assumed to solve every compatibility issue.

Does an existing solar system need replacing?

The distributor announcement does not establish a blanket requirement to replace an unchanged, functioning inverter. The key trigger is new installation or alteration work. If you are replacing a failed inverter or expanding a system, ask the installer which standards and approvals apply to the proposed work.

A discounted inverter is not necessarily a bargain if it cannot be approved for the installation.

What about batteries and vehicle-to-grid charging?

CitiPower and Powercor say the updated requirement also applies to inverters in other distributed energy devices that may be subject to network control for emergency backstop or flexible exports. They specifically mention batteries and vehicle-to-grid EV chargers.

This is not a statement that every existing home battery or EV charger must be replaced. The requirements depend on the device, installation and network-controlled functions involved. For a combined solar, battery and EV project, ask the installer to verify the complete system.

What does this mean for SolarEdge owners?

The timing is relevant following industry reports of SolarEdge's withdrawal from Australian sales operations. Owners considering an inverter replacement or firmware update should confirm their precise model's approval and support arrangements before proceeding.

The CSIP-AUS announcement does not establish that existing SolarEdge systems are non-compliant or that SolarEdge cannot provide the necessary updates.

What should Melbourne households check?

  • Ask for the exact inverter model and written confirmation of CSIP-AUS 1.2 compliance.
  • Check that the model appears on the applicable CEC and distributor lists.
  • For existing systems, ask whether the proposed work counts as an alteration.
  • For batteries or vehicle-to-grid equipment, confirm any network-control requirements.
  • Do not assume a firmware update is available without manufacturer confirmation.

The new communication standard does not itself introduce a new household rebate or automatically change a property's export limit. For connection context, see our Victorian solar export limits guide.

Sources and further reading

Sources checked: 6 November 2026

These are the references used for the factual claims above. Check live eligibility, tariffs, network rules and product terms before acting on anything time-sensitive.