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Determinations and reports
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Review of input methodologies
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Electricity distribution
Consolidated electricity distribution services IM determination as at 28 February 2017
Electricity distribution services IM amendments determination 2016
Input Methodology amendments determined by the High Court (2014)
Incremental rolling incentive scheme IM amendments determination
Electricity distribution services IM amendments determination
Electricity lines services and gas pipline services IM determination amendment – WACC percentile for price-quality regulation
Electricity lines services IM determination amendment 2014
Transpower
Consolidated Transpower IM determination as at 28 February 2017
Transpower IM amendments determination 2016
Consolidated Transpower Capital Expenditure IM determination as at 5 Feb 2015
Gas pipelines
Consolidated gas distribution IM determination as of 28 Feb 2017
Consolidated gas transmission services IM determination as of 28 Feb 2017
Gas distribution services IM amendments determination 2016
Gas transmission services IM amendments determination 2016
Implementing the change to Powerco's disclosure year-end – 3 Dec 2013
Airports
Consolidated airport services IM determination as of 20 Dec 2016
Airport services IM amendments determination 2016
Amendments and clarifications
Consultation on proposed amendments to Incremental Rolling Incentive Scheme for electricity distributors
Draft electricity distribution IRIS IM amendments determination 2015
Amendments to the WACC percentile
Further work on the cost of capital IM for airports – proposal
