The importance of three-phase electric motors
Three-phase electric motors are used in a wide range of industrial and commercial applications, including pumps, compressors and conveyor belts.
Three-phase electric motors and the systems they drive are estimated to account for 38% and 34% of electricity use in Australia and New Zealand respectively. Given this large amount of energy use, small efficiency gains can have a large impact.
Three-phase electric motors are currently regulated for energy efficiency in New Zealand and Australia.
The New Zealand Government is yet to consider proposed changes to New Zealand requirements.
Decision Regulation Impact Statement
Following consultation in March and April 2025, a Decision Regulation Impact Statement (DRIS) has been prepared for three-phase cage induction motors. The DRIS recommends policy options to improve the energy efficiency of motors sold in Australia and New Zealand.
On 8 May 2026, Australia's Energy and Climate Change Ministerial Council (ECMC) approved the recommendations in the DRIS for Australia. The proposals were developed under the Trans-Tasman Equipment Energy Efficiency (E3) programme.
In New Zealand, three-phase electric motors are already regulated, and the Government is yet to consider whether to make changes to New Zealand requirements. Any New Zealand regulatory changes would need to go through New Zealand's own governmental approval process.
EECA is working with DCCEEW on next steps to support Trans-Tasman alignment.
The DRIS recommends a two-stage approach:
- Stage 1: expand the range of motor sizes subject to energy efficiency requirements and increase MEPS. This would cover smaller motors from 0.12kW and larger motors up to 375kW. MEPS would be set at IE2 levels for small motors and IE3 for medium and large motors.
- Stage 2: increase MEPS to IE4 for certain medium to large motors.
View the DRIS Three Phase Cage Induction Motors [PDF 1.7 MB]
Visit DCCEEW's consultation page for the CRIS and consultation background(external link)