New Zealand Energy Quarterly

December quarter 2017

Released 22 March 2018

ISSN 1178-2714 (online)

The New Zealand Energy Quarterly provides quarterly data and analysis on energy supply, demand, prices and associated greenhouse gas emissions. This publication is part of the suite of energy publications produced by the Energy and Building Trends Team of the Ministry of Business, Innovation and Employment.

[image] Energy matrix.

Key Indicators

[image] Key indicators March 2018.
 

Electricity

MBIE has undertaken a quality improvement process of its energy data systems. The last Energy Quarterly reflects improvements to the electricity data system, resulting in revisions to previously published data.

  Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17 Dec 17 Change Dec 16 - 17

Total Generation (GWh)1 10205 10632R 11467 10288 10144R 10913R 11462 10527 2.3%
Renewable generation Hydro 5815 6224 7172 6518 6154 6085 6567 6159 -5.5%
Geothermal 1891 1903 1873 1757 1826 1879 1948 1800 2.4%
Wind 523 579 578 623 590 539 542 508 -18.5%
Other2 159 159 168 164 169R 168R 179R 165 0.2%
Total 8389 8865 9791 9063 8739R 8670 9236R 8632 -4.8%
Thermal generation Gas 1496 1424 1474 1044 1245 1927 1880 1526 46.2%
Coal 306 327 187 167 147 301 329 354 112.1%
Oil and waste heat 14 15 15 14 14 14 17 14 0.4%
Total 1816 1766 1676 1225 1405 2242 2227 1894 54.6%

Total Consumption (GWh)3 9309 9712 10513 9448 9129 9712 10466 9500 0.6%
Agriculture, Forestry and Fishing 908 612 443 615 841 506 458 729 18.7%
Industrial 3714 3667 3533 3677 3574 3659 3547 3731 1.5%
Commercial 2247 2421 2593 2323 2215 2407 2528 2297 -1.1%
Residential 2412 2982 3911 2804 2470 3110 3901 2714 -3.2%

Renewable % 82.2% 83.4% 85.4% 88.1% 86.1% 79.5% 80.6% 82.0%  

Greenhouse Gas
Emissions
kt CO2-e 1131R 1087R 916R 738R 781R 1229R 1286R 1163 57.7%
kt CO2-e/GWh 0.11 0.10 0.08 0.07 0.08 0.11 0.11 0.11 54.8%

Notes

1 Excludes generation used on-site for auxiliary services (e.g. lighting, coal grinders) and internal losses. Generation is prior to Transmission/Distribution losses.

2 Other renewable generation includes Wood, Biogas and Solar PV.

3 Includes unallocated onsite consumption and from Sept 2013 onwards estimated Solar PV consumption per sector.

R Data revised due to updated company returns.

 

Key points to note

  • New Zealand experienced a dry and warm spring and early summer during the December 2017 quarter. The dry weather impacted on hydro storage levels, and consequently changed the fuel mix used for electricity generation.
  • The hydro storage levels typically rise during the December quarter due to high inflows from rainfall and snow melt leading to higher hydro capacity at the end of the quarter. However, the hydro-lakes in the South Island in particular received less rainfall and there were lower rates of inflows during the December 2017 quarter. As a result of this lack of rainfall, hydro capacity was well below the long term average at the end of the quarter.
  • The lower hydro storage levels led to a 6 per cent decline in hydro generation, which was offset by a strong rise in gas based and coal fired generation. Gas fuelled generation was up by 46 per cent and coal fired generation was up by over 100 per cent from a lower level in 2016. The quarter saw an 18 per cent decline in wind and only a 2 per cent increase in geothermal generation as some geothermal capacity was temporarily unavailable due to outage.
  • The reduced supply of South Island hydro resulted in much higher wholesale electricity prices in December quarter 2017 compared to a year ago. The average wholesale prices in December 2017 were twice that seen in 2016.
  • Electricity demand was up 0.6 per cent from the previous December quarter, as the dry conditions resulted in an increased need for irrigation by the agricultural sector.

Read more detailed data on Electricity

Back to top

Oil

Quarterly Oil Production, Imports, Exports and Emissions

Units: Petajoules (PJ) Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17 Dec 17

Domestic Crude Oil Supply   
 
Production 19.3 19.3 19.8 15.8 16.3 17.0 16.7 16.2
Imports 64.7 58.9 62.3 59.3 56.9 66.3 61.6 60.0
Exports 14.7 17.7 22.4 11.5 13.0 15.5R 17.4 15.9

Oil Product Supply Refinery output 60.6 58.5 59.8 61.2 53.6 60.5 59.7 60.6
Imports 22.9 32.3 22.0 31.2 31.2 27.0 24.5R 32.6
Exports 0.5 0.8 2.5 1.3 0.0 0.6 2.5 1.3

Oil Product Demand Total Petrol 28.8 26.7 27.6 29.4 29.1 28.0 27.5 30.1
Diesel 31.2 30.4 30.3 34.0 33.3 32.7 32.4 36.3
Others1 8.1 6.9 8.8 6.8 9.9 7.7 7.4 8.1

Liquid Biofuel Demand   Total biofuel 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0

Liquid Fuel Emissions  (kt CO2) 4578R 4361R 4444R 4785R 4769R 4591R 4550R 5051

Notes

1 Includes fuel oil, aviation fuel, kerosene, bitumen, lubricants and other oil products.
R Data revised

 

Key points to note

  • Diesel and aviation fuel consumption continue to increase. Refining NZ has been operating at near capacity for production of jet fuel over the last few years and future increases in demand are likely to be met by higher imports.

 

Read more detailed data on Oil

Back to top

Gas

Quarterly Gas Production and Emissions

Units: Petajoules (PJ) Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17 Dec 17

Gas Production 51.8 57.6 58.7 52.6 51.5 51.5 57.6 55.3

Gas Reinjected 1.8 3.6 2.8 3.9 4.0 3.6 0.3 0.4
LPG Extracted 2.1 1.6 1.7 1.6 1.7 1.9 2.0 2.0
Flared 1.9 1.2 1.6 1.0 1.2 1.4 1.4 1.5
Losses and Own Use 1.3 1.2 1.4 1.2 1.3 1.4 1.5 1.5

Net Gas Production 44.8 50.0 51.2 44.9 43.2 43.1 52.4 49.9
Estimated Gas Consumption Emissions (kt CO2) 951R 1087R 1239R 1056R 992R 1001R 1225R 1098

Notes

R Data revised

We have updated our methodology to disaggregate natural gas use in industrial processes between energy and non-energy applications. This has allowed us to report emissions from natural gas energy use more accurately. We have revised our historical data to reflect this change.

Key points to note

  • Significant increase in gas consumption for electricity generation during the quarter. This was a result of lower hydro storage levels during the quarter leading to increased dependence on thermal generation.
  • Gas consumption in the food processing sector returned to expected levels after a poor dairying season in 2016. This was shown by what appeared to be a large increase in consumption in the quarter, but when viewed as part of the longer trend we can see that it is simply a return to expected levels.
  • Methanex had a strong quarter, listing a 15 month high in the December quarter. Strong demand and high prices in the Asia Pacific market both helped to achieve record production and sales volume.

Read more detailed data on Gas

Back to top

Coal

Quarterly Coal Production, Imports and Exports

Units: kilotonnes (kt)
Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17 Dec 18

Production 754 668 717 731 598 811R 722R 804

Bituminous

330 296 316 264 179 381 341R 310

Sub-bituminous

336 306 342 369 333 358R 317R 405

Lignite

88 66 59 99 86 72R 63R 98

Imports 147R 91R 130R 86 106R 96R 86R 174

Exports 268 310 305 304 157 417 231R 382

Notes

R Data revised 

Key points to note

  • Total coal production was the highest (on a tonnage basis) since June 2015, up 11 per cent on December 2016. Production was buoyed by the combination of a strong international coking coal market, new blood in the coal production market, and increased local demand for lignite and sub-bituminous coals.
  • Driven by dry weather, coal sales to power generation continue to rise, reversing the trend seen in 2016
  • Coal exports are up 23 per cent on December 2016, driven by increased demand coupled with supply bottlenecks in the regional market.

Note: Due to the sale of assets by Solid Energy in quarter 3 of 2017, Coal production and sales statistics for the quarter were originally published using a combination of final and provisional data. These statistics have been revised based on updated data.

Read more detailed data on Coal

 

Previous Energy Quarterly editions

Earlier versions of the New Zealand Energy Quarterly.

Read more…

 

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 New Zealand License.

 

Filed under: