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A fundamental requirement of competitive and efficient electricity markets is access to reliable data and performance metrics.

This Electricity Market Information website (EMI) is the Electricity Authority's avenue for publishing data, market performance metrics, and analytical tools to facilitate effective decision-making within the New Zealand electricity industry.

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Market insights

National demand was similar to 2017 with marginally higher levels in the central North Island balanced by lower levels in the lower North Island and upper South Island. August temperatures were again above average. The 2018 winter was the 6th warmest on record with demand 1.4 percent above 2017.

Time scale: Month Show: Reconciled demand

We’ve released residential savings numbers and consumption data for 2017. In addition to this, we’ve also added a trend report for residential consumption that helps users observe changes in residential energy consumption through time and contrast these trends between regions. Check out the daily average residential consumption for each month over the last five years below. Click the heading above to drill through and try changing the region type and region selected in the series filter to explore further.

Date range: 01 Jan 2017 - 31 Dec 2017 Time scale: Month Temperature adjusted: No Show: Average (daily)

Barriers to entry and exit impact market dynamics. Monitoring the entry and exit of firms in the retail market, therefore, enables insights to be drawn about these barriers, and market performance more generally. We've added a report that tracks entry and exit of parent companies, traders, and brands in the retail electricity market. The retail market has seen a significant number of new retailers begin operations, with 22 retail parent companies entering since the beginning of 2013 (and three exiting). This represents a net increase of 19 retailers, up 135 per cent on the 2013 numbers. Some of these companies are very small and may only operate locally, while others are challenging competitors across the whole country. Hover over the markers to see who entered or exited.

Region: New Zealand Entity: Retail parent company Market segment: All ICPs

The market share trends report shows the growth (or decline) of the new entrant retailers. You may want to try zooming in to see what the smaller retailers are up to. The ability to scale retail operations rapidly is often dependent on investment in systems and processes, as well as the marketing effort. For information on how these entrants are helping create a more competitive market structure see our annual changes in market structure dashboard.

Region: New Zealand Retail entity: Parent company Market segment: All ICPs

The number of connections (installations control points) in the retail market continues to increase. This means there are more consumers for retailers to compete to supply. Over time the share of connections supplied by small and medium retailers in aggregate is growing steadily. Take a look at the share in the North Island - small and medium retailers combined now serve more than Meridian or Trustpower.

Region: New Zealand Retail entity: Parent company Market segment: All ICPs

This report provides an alternate view of consumer choice focusing on the changes that occur within a year. The West Coast region recorded a 70 per cent increase in maximum available choice, up from just 10 in 2016 to 17 in 2017. Hover over the bars and markers for more information on consumer choice and how this is changing.

Region type: Regional council Market segment: All ICPs Retail entity: Brands Show: Maximum choice
EMI news
New access arrangements to EMI datasets (retirement of anonymous FTP)

Category  - EMI features and tips 4 days ago

Planned EMI outage, 4:30 pm Wednesday, 17 October

Category  - EMI features and tips 4 days ago

Planned outage of EMI and real-time APIs on Tuesday, 2 October

Category  - EMI features and tips 9 days ago

EMI news
New access arrangements to EMI datasets (retirement of anonymous FTP)

Category  - EMI features and tips 4 days ago

Planned EMI outage, 4:30 pm Wednesday, 17 October

Category  - EMI features and tips 4 days ago

Planned outage of EMI and real-time APIs on Tuesday, 2 October

Category  - EMI features and tips 25 days ago

Trending reports
Wholesale energy prices

Category  - Wholesale 2.4k this week

Market share trends

Category  - Retail 1.6k this week

Historical hydro risk curves

Category  - Environment 1.1k this week

Installed distributed generation trends

Category  - Retail 998 this week

Grid demand trends

Category  - Wholesale 990 this week

Trending reports
Wholesale energy prices

Category  - Wholesale 2.4k this week

Market share trends

Category  - Retail 1.6k this week

Historical hydro risk curves

Category  - Environment 1.1k this week

Installed distributed generation trends

Category  - Retail 998 this week

Grid demand trends

Category  - Wholesale 990 this week

Latest discussions
Important message for EMI FTP users

Category  - EMI features and tips 4 days ago

New access arrangements to EMI datasets (retirement of anonymous FTP)

Category  - EMI features and tips 4 days ago

Planned EMI outage, 4:30 pm Wednesday, 17 October

Category  - EMI features and tips 4 days ago

Latest discussions
Important message for EMI FTP users

Category  - EMI features and tips 4 days ago

New access arrangements to EMI datasets (retirement of anonymous FTP)

Category  - EMI features and tips 4 days ago

Planned EMI outage, 4:30 pm Wednesday, 17 October

Category  - EMI features and tips 4 days ago