Code information notices

The Electricity Authority can issue notices under the Electricity Industry Participation Code that require industry participants to provide specific information. These notices help us monitor the market and support a better understanding of how it is operating.

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Clause 2.16 notices

Clause 2.16 notices allow us to collect and publish data, information and tools that support effective monitoring of the electricity industry and markets. This helps the Authority, industry participants and consumers to better understand how the markets are performing and to ensure the right rules are in place for a well‑functioning electricity system.

We consult with industry participants before issuing a notice under Clause 2.16 to make sure the information requirements are workable and can be delivered at a reasonable cost.

Industry participants must comply with all clause 2.16 notices.

1. Retail market monitoring notice

This notice requires all retailers to provide monthly information on domestic and small business customers (effective 31 August 2025).

It increase transparency and accountability in the retail electricity market and helps us monitor the retail market, including plans and prices, the Consumer Care Obligations, the barriers that customers face and retail competition.

2. Investment pipeline notice

This notice is for Transpower to provide information on upcoming generation and load projects, like solar farms and data centres (effective 1 February 2025).

It helps us monitor future electricity supply and demand levels.

3. Cost of investment notice

This notice is for generators to provide information about the cost of new generation projects (effective 1 February 2025).

It helps us assess whether prices are aligned with the cost of providing new generation.

4. Thermal fuel disclosure notice

This notice is for all generators with generating units that use natural gas, diesel, coal or biomass as a fuel source (effective 1 April 2025).

It helps to ensure that participants can make informed decisions about risk management as we head into this winter and beyond.

5. Over-the-counter bids and offers data

This notice requires participants to provide us with information on requests for over-the-counter hedge contracts and the responses to those requests. It applies to participants who request to buy or sell OTC contracts of 0.1MW or larger, including retailers and industrial participants buying electricity from the clearing manager and generators.

You can watch the recording of a webinar we held to answer any questions regarding this notice.

See below for the template CSV files and data tables.

Guidance on clause 2.16 notice data types

This guidance details the different data types that may be used in clause 2.16 notices published from September 2025 onwards. Previous and future notices may include other data types.

Clause 6B.10(3) notices

Clause 6B.10(3) notices are formal requests from the Electricity Authority for lines companies to provide a connection charge reconciliation and any related information. These notices require distributors to supply the information in the form and timeframe specified by the Authority.

Lines companies must comply with all clause 6B.10(3) notices.