The PV class system

The PV class system

As of 1 May 2017 there has been key changes to the existing class systems. The allowable class applies on a 'per lot' basis:

  PV SpecificationsStorage Specifications
ClassApplicantsDarwin RegionAlice SpringsKatherineTennant CreekMax Charge RateRamp PeriodComments
Class 1 Private/residential

≤ 5kVA single phase

OR

≤ 7kVA three phase

Limited by battery inverter (max. 10kVA per phase) 12 min ramp down nominal PV inverter output to zero

Pre-approved

Sized by Inverter (AC)

Class 2

Private/residential
Small Commercial

≤ 30kVA three phase with zero export limiter Limited by battery inverter (max. 10kVA per phase)  12 min ramp down nominal PV inverter output to zero 

Pre-approved

Sized by Inverter (AC)

Class 3 Medium Commercial ≤ 200kVA three phase ≤ 100kVA three phase As determined by assessment  12 min ramp down nominal PV inverter output to zero 

Requires Assessment

Sized by Inverter (AC)

*Zero-export only

Class 4 Large Commercial          >200kVA three phase          >100kVA three phase As determined by assessment  As determined by assessment 

Requires Assessment

Sized by Inverter (AC)

Ramping required

*Zero-export only

*NOTE: installer is responsible for ensuring that the customers service is not overloaded and that the voltage drop is within limits etc due to the embedded generation and battery charging at a customers’ property.

For specific requirements relating to each class see the PV class requirements.

Please note all rooftop PV applications for remote community sites are to be sent to remotedevelopment@powerwater.com.au for assessment. Remote community rooftop PV application assessments are based on the system requirements and operating parameters of the particular power station. The PV class system pre-approved classes for rooftop PV do not apply in remote communities.