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The revised Australian Standard AS/NZS 4777.2:2020 will include a mandatory requirement for all new inverters to have a voltage disturbance ride-through (VDRT) capability. This will be applicable throughout Australia from 18 December 2021 but the VDRT capability is being fast tracked here in WA.
From 1 July 2021, all inverters in WA that meet the previous version of AS/NZS 4777.2:2015 are required to have VDRT capability before being installed and commissioned. This implementation requirement is being accelerated in WA at the recommendation of the Energy Transformation Taskforce to reduce the number of inverters with lower specifications being installed prior to December 2021.
The change is a further step forward in managing distributed energy resources (DER) on the grid, paving the way for the continued rapid uptake of solar by Western Australian homes and businesses.
The new changes will have no direct impact on Western Australians who purchase PV systems, as the change is an installed setting change. To assist PV providers that may be left with non-compliant stock, inverters without VDRT capability can be installed between 1 June-1 July 2021.
In determining if the inverter is compliant, Inverters that meet the 2015 version of AS 4777.2 will be required to demonstrate compliance with the new voltage disturbance ride-through test protocol that was developed by the Australian Energy Market Operator. Western Power will be using a list of inverters compliant with the new test protocol on the as provided by the Clean Energy Council CEC website.
To ensure our continued support of and collaboration with the industry, we invite you to attend our online information session.
