You can find and compare retailers’ gas prices using free online comparison tools.
Powerswitch is a free service provided by Consumer NZ to help you work out which power company and pricing plan is best for you.
Billy, launched by the Electricity Authority on 26 March 2026, is a free, independent and publicly owned comparison and switching tool making it easier for Kiwi households to take control of their power costs.
Compare gas contracts
We administer a Retail Gas Contracts Oversight Scheme to help consumers evaluate retailers’ publicly posted terms and conditions of supply.
The Scheme is regularly reviewed by an Independent Assessor. The most recent full review was undertaken in 2023.
The independent assessment provides details of the contract alignment rating of each retailer against our set of Benchmarks and Reasonable Consumer Expectations (RCEs). It also lets you compare the results of individual retailers.
Since its introduction in 2010, the voluntary Scheme has prompted a significant improvement in the clarity of those arrangements.
Latest report: 2023
The Independent Assessor's Benchmark Assessment Report - 2023 evaluated 11 published supply arrangements (9 residential and 2 business or other arrangements) across 9 retailers supplying gas to consumers.
The overall alignment of all published supply arrangements against the Benchmarks and RCEs is 'Substantial', in line with the trend over previous assessments.