Sharing CDR data “related to” a consumer’s NEM supply

This article was updated on 2 February 2026 to include minor editorial changes to enhance readability.

A CDR consumer must meet specific criteria to be eligible to share data in the energy sector (see rule 1.10B and clause 2.1(2) of Schedule 4 to the CDR Rules). In particular, an eligible CDR consumer in the energy sector must have an account which relates to an arrangement that has at least one connection point or child connection point for which there is a financially responsible market participant in the National Electricity market (NEM). This means that electricity consumers in Western Australia and Northern Territory (which are not connected to the NEM) are generally unable to share their CDR data in the energy sector.

However, the designation instrument for the energy sector allows for information about goods/services that are “related” to the consumer’s NEM supply to be included as CDR data, as well as information about dual fuel plans (i.e. electricity and gas plans) - see sections 8(1)(b), 9(4) and the note under section 5(1) of the energy designation instrument.

The CDR rules define any CDR data covered by the energy sector designation instrument as ‘energy sector data’, and this data falls within the definitions of ‘required consumer data’ in clause 3.2(2) of Schedule 4 and the definition of ‘voluntary consumer data’ in clause 3.2(3) of Schedule 4.    

The definitions of retailer-held data in clause 1.3 of Schedule 4 of the rules (including ‘customer data’, ‘account data’, ‘billing data’, ‘product specific data’ and ‘tailored tariff data’) are not limited to electricity. While the consumer’s arrangement with the retailer must relate to one or more connection points in the NEM, the ‘account balance at any time’ (which is included in the definition of billing data) is not limited to the costs of supplying the NEM connection points if other services impact on the account balance. For example, where the account balance on a bill includes charges for the supply of gas, the supply of electricity outside the NEM, or charges for other goods/services, the full account balance must be shared, as well as relevant data about the charges impacting on that account balance. That is, any services that affect the account balance, in circumstances where a single bill is issued, must be included as CDR data. If they are not included, then there will be discrepancies between what the consumer has paid and the account balance that is shared via the CDR. 

Where a separate bill is issued for gas supply, or electricity supply outside the NEM, and this does not affect the account balance of the consumer’s account under which NEM supply is provided, data relating to the services outside the NEM is not within scope for data sharing in the CDR. However, any discounts applied because the consumer has both an electricity and a gas account with the retailer will be relevant (see definition of ‘product specific data’ in clause 1.3 of Schedule 4 the rules). 

Note: This guidance establishes minimum requirements for initial data sharing in energy and we note that payloads for retailer-held data relevant to gas may increase over time.