Regulatory investment test for distribution (RIT-D) and application guidelines 2013

Regulatory investment test and guidelines
Date initiated: 
21 January 2013
Date completed: 
23 August 2013
Effective date: 
1 January 2014
AER reference: 


On 23 August 2013, the AER released its final Regulatory Investment Test for Distribution (RIT-D) and accompanying RIT-D application guidelines. The RIT-D establishes consistent, clear and efficient planning processes for distribution network investments in the national electricity market.

From 1 January 2014, distribution businesses must assess applicable network investments under the RIT-D. The RIT-D replaces the former regulatory test.

On 18 September 2017, we published amended RIT-D guidelines as part of the transitional arrangements under the Australian Energy Market Commission’s (AEMC) replacement expenditure planning arrangements rule change (“repex rule change”).

The 2013 RIT-D application guidelines have been superseded. Please refer to the 2017 RIT application guidelines for the latest information.

On 1 August 2022, we released an update to the Regulatory Investment Test for Distribution, to give effect to the new rules allowing distributors to provide SAPS to existing customers, and to offer to connect new customers to existing distributor-operated SAPS (also called regulated SAPS) where it is more economically efficient than connection to the interconnected national electricity system.