In the annual benchmarking reports, we examine the relative efficiency of the distribution and transmission electricity network service providers. In doing this, we consider the characteristics of each network business, and how their productivity compares at the aggregate level and for the outputs they deliver to consumers. We developed the report using publicly available data that we collected after an extensive consultation process that aligned with the development of our Expenditure Forecast Assessment Guideline.
In the 2024 annual benchmarking report for distribution, we finalised implementation of our approach to addressing differences in capitalisation between network service providers. We initially implemented this in 2023. Given this, the results in the benchmarking reports for distribution before 2023 are not directly comparable with those from 2023.
The benchmarking calculations and dataset, and submissions by the network services providers, can be found at Annual Benchmarking Report 2021.
Annual benchmarking reports
Consultant reports - Economic Insights
Distribution – Economic Insights’ benchmarking results for the AER – November 2021
Transmission – Economic Insights’ benchmarking results for the AER – November 2021