New Zealand Energy Quarterly

September quarter 2017

Released 21 December 2017

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 September 2017.
 

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.

  Dec 15 Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17 Change Sep 16 - 17

Total Generation (GWh)1 10588 10205 10631 11467 10288 10143 10912 11462 0.0%
Renewable generation Hydro 6086 5815 6224 7172 6518 6154 6085 6567 -8.4%
Geothermal 1860 1891 1903 1873 1757 1826 1879 1948 4.0%
Wind 673 523 579 578 623 590 539 542 -6.3%
Other2 166 159 159 168 164 168 167 178 6.3%
Total 8785 8389 8865 9791 9063 8738 8670 9235 -5.7%
Thermal generation Gas 1325 1496 1424 1474 1044 1245 1927 1880 27.6%
Coal 463 306 327 187 167 147 301 329 75.8%
Oil and waste heat 14 14 15 15 14 14 14 17 15.9%
Total 1803 1816 1766 1676 1225 1405 2242 2227 32.9%

Total Consumption (GWh)3 9782 9309 9712 10513 9448 9129 9712 10466 -0.4%
Agriculture, Forestry and Fishing 838 908 612 443 615 841 506 458 3.5%
Industrial 3711 3714 3667 3533 3677 3574 3659 3547 0.4%
Commercial 2325 2247 2421 2593 2323 2215 2407 2528 -2.5%
Residential 2886 2412 2982 3911 2804 2470 3110 3901 -0.3%

Renewable % 83.0% 82.2% 83.4% 85.4%R 88.1% 86.1% 79.5% 80.6%  

Greenhouse Gas
Emissions
kt CO2-e 1139 1158 1105 901 776 705 1232 938 4.1%
kt CO2-e/GWh 0.11 0.11 0.10 0.08 0.08 0.07 0.11 0.08 5.0%

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 has just experienced a dry winter that affected hydro storage levels in the South Island, where the majority (typically 70 per cent) of hydro generation is from.
  • South Island storage levels started off low, at 56 per cent of average in the September quarter following a dry June quarter. North Island hydro lakes were unaffected, and were at 105 per cent of average at the beginning of the quarter, meaning national hydro storage was at 64 per cent of historical average1.
  • The dry weather continued in July, but South Island storage levels improved with more favourable rainfall in August and September. National hydro storage recovered to 113 per cent by the end of September, with an associated resumption of typical levels of hydro generation.
  • The dry winter meant that hydro generation declined eight per cent compared to the previous quarter, with the lowest level of South Island hydro generation in July for more than a decade. Gas-fired electricity generation increased 28 per cent, peaking in July.
  • The reduction in hydro generation resulted in the lowest level of renewable generation since the same quarter in 2013, at 81 per cent. However, this is higher than previous September quarters in dry winters (2001, 2003, and 2008), mainly because of a higher contribution of geothermal generation (17 per cent).

Note
1 See https://www.meridianenergy.co.nz/assets/Investors/Reports-and-presentations/Monthly-operating-reports/2018/July-2017-monthly-operating-report.pdf

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Oil

Quarterly Oil Production, Imports, Exports and Emissions

Units: Petajoules (PJ) Dec 15 Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17

Domestic Crude Oil Supply   
 
Production 20.9 19.3 19.3 19.8 15.8 16.3 17.0 16.7
Imports 55.1 64.7 58.9 62.3 59.3 56.9 66.3 61.6
Exports 20.0 14.7 17.7 22.4 11.5 13.0 15.6 17.4

Oil Product Supply Refinery output 60.7 60.6 58.5 59.8 61.2 53.6 60.5 59.7
Imports 23.7 22.9 32.3 22.0 31.2 31.2 27.0R 24.4
Exports 0.1 0.5 0.8 2.5 1.3 0.0 0.6 2.5

Oil Product Demand Total Petrol 28.9 28.8 26.7 27.6 29.4 29.1 28.0 27.5
Diesel 32.6 31.2 30.4 30.3 34.0 33.3 32.7 32.4
Others1 9.5 8.1 6.9 8.8 6.8 9.9 7.7R 7.4

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

Liquid Fuel Emissions  (kt CO2) 4688 4583R 4363R 4445R 4787R 4758R 4580R 4591

Notes

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

 

Key points to note

  • In mid-September 2017, the Refinery to Auckland Pipeline (RAP) between Marsden Point and Wiri south Auckland suffered a leak, halting the flow of fuel for 10 days and affecting Auckland fuel supply. The supply of jet fuel to Auckland airport was particularly affected, with throughput down 29 per cent compared to an average month in 2017.
  • The supply of regular petrol was six per cent lower (0.23PJ) in the Auckland region compared to an average month in 2017, and diesel was down four per cent (0.23PJ).
  • Demand for petrol and diesel was met through supply via neighbouring facilities (Ports of Auckland, Marsden Point and Port of Tauranga), greatly mitigating any shortfall.

 

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Gas

Quarterly Gas Production and Emissions

Units: Petajoules (PJ) Dec 15 Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17

Gas Production 49.7 51.8 57.6 58.7 52.6 51.5 51.5 57.6

Gas Reinjected 3.1 1.8 3.6 2.8 3.9 4.0 3.6 0.3
LPG Extracted 1.7 2.1 1.6 1.7 1.6 1.7 1.9 2.0
Flared 2.2 1.9 1.2 1.6 1.0 1.2 1.4 1.4
Losses and Own Use 1.4 1.3 1.2 1.4 1.2 1.3 1.4 1.5

Net Gas Production 41.4 44.8 50.0 51.2 44.9 43.2 43.1 52.4
Estimated Gas Consumption Emissions (kt CO2) 688R 549 608 765 598 496 646 759

Notes

R Data revised

 

Key points to note

 

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Coal

Quarterly Coal Production, Imports and Exports

Units: kilotonnes (kt)
Dec 15 Mar 16 Jun 16 Sep 16 Dec 16 Mar 17 Jun 17 Sep 17

Production 760 754 668 717 731 598> 812 596

Bituminous

265 330 296 316 264 179 381 240

Sub-bituminous

391 336 306 342 369 333 356 294

Lignite

104 88 66 59 99 86 74 61

Imports 122 148 92 131 86 107 97 92

Exports 329 268 310 305 304 157 417 178

Notes

R Data revised

 

Key points to note

  • Coal production continued its steady decline, down 27% quarter-on-quarter. This downturn was driven chiefly by a decrease in coking and sub-bituminous coal production, as Solid Energy decreased production in preparation for its divestment at the end of the quarter.
  • Solid Energy's decreased output also contributed to the sharp decrease in exports (down 57% quarter-on-quarter).
  • Despite this drop in production, coal sales remained stable: sales for the year ended September 2017 increased by 2% from the previous quarter, driven mainly by seasonal demand from the meat and dairy sectors. Coal producers withdrew from their stocks to meet this demand.

 

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Previous Energy Quarterly editions

Earlier versions of the New Zealand Energy Quarterly.

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

 

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