BlueScope New Zealand Steel Glenbrook

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BlueScope New Zealand Steel Glenbrook, also known as Glenbrook Steelworks, is a steel plant in Glenbrook, Auckland, New Zealand that operates electric arc furnace (EAF), basic oxygen furnace (BOF), and direct reduced iron (DRI) technology.

Location

The map below shows the exact location of the plant in Glenbrook, Auckland, New Zealand:

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  • Location: Mission Bush Road, Glenbrook, South Auckland, New Zealand
  • Coordinates (WGS 84): -37.206878, 174.728098 (exact)

Background

New Zealand Steel is the only fully integrated steel producer in New Zealand and was established in 1965.[1] It uses locally sourced iron sand and manufactures about 670,000 tonnes of steel slab and billet a year.[2] In May 2023, the company announced its plans to construct an electric arc furnace at a cost of NZ$300 million which will be co-funded by the New Zealand Government. The EAF is expected to become operational by 2026 and is expected to reduce NZ Steel’s Scope 1 and 2 greenhouse gas emissions by at least 45%.[3][4] The EAF will replace two of the four existing DRI kilns, one of the two melters and the oxygen steelmaking furnace (KOBM).[5]

Ownership Tree

This ownership tree is part of the Global Energy Ownership Tracker, a project of Global Energy Monitor.

Plant Details

Table 1: General Plant Details

Start date Workforce size Power source Iron ore source Coal source
1969[6] 1400[7] Glenbrook Power Station (L100000407928)[8][9] Waikato North Head Mine (P100000129355)[10][11] not available

Table 2: Ownership and Parent Company Information

Parent company Parent company PermID Parent GEM entity ID Owner Owner company PermID Owner GEM entity ID
BlueScope Steel Ltd [100.0%] 4295858761 [100.0%] E100000130689 [100.0%] New Zealand Steel Ltd [100%][7] 4296769985 E100000130799 [100%]

Table 3: Process and Products

Steel product category Steel products Steel sector end users ISO 14001 ISO 50001 Responsible steel Main production equipment
semi-finished, finished rolled[12] slab, cold rolled, hot rolled[12] building and infrastructure, steel packaging, tools and machinery[12] 2024-05-16[13] no yes[14] DRI; EAF; BOF

Table 4: Plant-level Crude Steel Production Capacities (thousand tonnes per annum)

1Please see our Frequently Asked Questions page for an explanation of the different capacity operating statuses.
Capacity operating status1 Basic oxygen furnace steelmaking capacity Electric arc furnace steelmaking capacity Nominal crude steel capacity (total)
operating – 650[15][12] 650[15][12]
retired 670[16][15][12] – 670[16][15][12]

Table 5: Plant-level Crude Iron Production Capacities (thousand tonnes per annum)

1Please see our Frequently Asked Questions page for an explanation of the different capacity operating statuses.
Capacity operating status1 Sponge iron/DRI capacity Nominal iron capacity (total)
operating 326[17] 326[17]
retired 326[17] 326[17]

Table 6: Upstream Products Production Capacities (thousand tonnes per annum)

Sinter Pellets
NF[17] NF[17]

Table 7: Actual Plant-level Crude Steel Production by Year (thousand tonnes per annum)

Year BOF production Other/unknown steel production
2019 –[18] –[18]
2020 –[18] –[18]
2021 –[18] –[18]
2022 unknown unknown
2023 unknown unknown
2024 unknown unknown
2025 unknown unknown

Table 8: Actual Plant-level Crude Iron Production by Year (thousand tonnes per annum)

Year DRI production Other/unknown iron production
2019 unknown unknown
2020 unknown unknown
2021 unknown unknown
2022 unknown unknown
2023 unknown unknown
2024 unknown unknown
2025 unknown unknown

Unit Details

Table 9: Direct Reduced Iron Furnace Details

Unit name Status Retired date Furnace type Current capacity (ttpa)
unknown DRI (1) operating[7] – rotary kiln[17] 163[17]
unknown DRI (2) operating[7] – rotary kiln[17] 163[17]
unknown DRI (3) retired[19] 2026-08[19] rotary kiln[17] 163[17]
unknown DRI (4) retired[19] 2026-08[19] rotary kiln[17] 163[17]

Table 10: Direct Reduced Iron Furnace Reductant Details

Unit name Current or initial reductant Hydrogen reductant status
unknown DRI (1) coal (solid)[17] unknown[20]
unknown DRI (2) coal (solid)[17] unknown
unknown DRI (3) coal (solid)[17] –
unknown DRI (4) coal (solid)[17] –

Table 11: Electric Arc Furnace Details

Unit name Status Announced date Construction date Start date Furnace manufacturer and model Current capacity (ttpa)
unknown EAF (1) operating[21] 2023-05[22] 2024[23] 2026[21][22] Danieli; March Construction; Beca Engineers Digimelter[24][23][24] 650[12][15]

Table 12: Electric Arc Furnace Feedstock Details

Unit name Scrap-based % scrap % DRI % HBI % sponge iron (unknown if DRI or HBI) % basic/merchant pig iron % granulated pig iron % pig iron (unknown if basic/merchant or granulated) % other iron
unknown EAF (1) yes[25] 50.00[26][27] unknown >0[26][27][28] >0[26][27][28] unknown unknown unknown 50.00[26][27][28]

Table 13: Basic Oxygen Furnace Details

Unit name Status Retired date Current capacity (ttpa)
unknown BOF (1) retired[19] 2026-08[15][19][22] 670[12][15][16]

Articles and Resources

Additional data

To access additional data, including an interactive map of steel plants, a downloadable dataset, and summary data, please visit the Global Iron and Steel Tracker on the Global Energy Monitor website.

References

  1. ↑ "New Zealand Steel Through The Years". NZ Steel. Retrieved 26 October, 2023. {{cite web}}: Check date values in: |access-date= (help)CS1 maint: url-status (link)
  2. ↑ "New Zealand". www.bluescope.com. Retrieved 2023-10-26.
  3. ↑ "Australian BlueScope to build new EAF in New Zealand". SEAISI. 31 May 2023. Retrieved 26 October, 2023. {{cite web}}: Check date values in: |access-date= (help)CS1 maint: url-status (link)
  4. ↑ "BlueScope to decarbonize New Zealand steelworks". Steel Times International. Retrieved 2023-10-26.
  5. ↑ "Electric Arc Furnace, Process Change". NZ Steel. Retrieved 26 October, 2023. {{cite web}}: Check date values in: |access-date= (help)CS1 maint: url-status (link)
  6. ↑ https://web.archive.org/web/20220305021508/https://www.nzsteel.co.nz/new-zealand-steel/the-story-of-steel/new-zealand-steel-through-the-years/. Archived from the original on 2022-03-05. {{cite web}}: Missing or empty |title= (help)
  7. ↑ 7.0 7.1 7.2 7.3 https://web.archive.org/web/20220318093904/https://www.bluescope.com/about-us/where-we-are/new-zealand/. Archived from the original on 18 March 2022. {{cite web}}: Missing or empty |title= (help)
  8. ↑ https://en.wikipedia.org/wiki/Glenbrook_Power_Station. {{cite web}}: Missing or empty |title= (help)
  9. ↑ https://www.gem.wiki/Glenbrook_power_station. {{cite web}}: Missing or empty |title= (help)
  10. ↑ https://web.archive.org/web/20140106203745/http://www.nzsteel.co.nz/about-new-zealand-steel/operations-/glenbrook-steel-site. {{cite web}}: Missing or empty |title= (help)
  11. ↑ https://www.gem.wiki/NZ_Steel_Waikato_North_Head_Mine. {{cite web}}: Missing or empty |title= (help)
  12. ↑ 12.0 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 https://web.archive.org/web/20220307000656/https://www.nzsteel.co.nz/new-zealand-steel/the-story-of-steel/the-steel-making-process/steel-making/. Archived from the original on 2022-03-07. {{cite web}}: Missing or empty |title= (help)
  13. ↑ https://www.nzsteel.co.nz/new-zealand-steel/responsibilities/certificates-and-memberships/. {{cite web}}: Missing or empty |title= (help)
  14. ↑ https://www.bluescope.com/resource-centre/responsiblesteel--site-certification. {{cite web}}: Missing or empty |title= (help)
  15. ↑ 15.0 15.1 15.2 15.3 15.4 15.5 15.6 https://web.archive.org/web/20230607040011/https://www.bluescope.com/bluescope-news/2023/05/nz-steel-eaf-announcement/. Archived from the original on 2023-06-07. {{cite web}}: Missing or empty |title= (help)
  16. ↑ 16.0 16.1 16.2 https://www.bluescope.com/our-steel/case-studies/supporting-new-zealand-s-climate-transition-. {{cite web}}: Missing or empty |title= (help)
  17. ↑ 17.00 17.01 17.02 17.03 17.04 17.05 17.06 17.07 17.08 17.09 17.10 17.11 17.12 17.13 17.14 17.15 17.16 17.17 https://web.archive.org/web/20220307000647/https://www.nzsteel.co.nz/new-zealand-steel/the-story-of-steel/the-steel-making-process/iron-making/. Archived from the original on 2022-03-07. {{cite web}}: Missing or empty |title= (help)
  18. ↑ 18.0 18.1 18.2 18.3 18.4 18.5 (PDF) https://web.archive.org/web/20240119094144/https://www.bluescope.com/content/dam/bluescope/corporate/bluescope-com/investor/documents/2023_BlueScope_FY_Results_Financial_and_Despatch_History.pdf. Archived from the original (PDF) on 2024-01-19. {{cite web}}: Missing or empty |title= (help)
  19. ↑ 19.0 19.1 19.2 19.3 19.4 19.5 https://www.steelorbis.com/steel-news/latest-news/new-zealand-steel-produces-first-green-steel-at-glenbrook-eaf-1470159.htm. {{cite web}}: Missing or empty |title= (help)
  20. ↑ (PDF) https://web.archive.org/web/20250916221120/https://www.bluescope.com/content/dam/bluescope/corporate/bluescope-com/investor/documents/2024_ASX_Climate_Action_Report.pdf. Archived from the original (PDF) on 2025-09-16. {{cite web}}: Missing or empty |title= (help)
  21. ↑ 21.0 21.1 https://australiansteel.com/new-zealand-news/. {{cite web}}: Missing or empty |title= (help)
  22. ↑ 22.0 22.1 22.2 https://web.archive.org/web/20240906170454/https://www.seaisi.org/details/22943?type=news-rooms. Archived from the original on 2024-09-06. {{cite web}}: Missing or empty |title= (help)
  23. ↑ 23.0 23.1 https://www.marchcon.co.nz/offer-portfolio/project-electron-blu/. {{cite web}}: Missing or empty |title= (help)
  24. ↑ 24.0 24.1 https://web.archive.org/web/20240916192335/https://www.aist.org/404. Archived from the original on 2024-09-16. {{cite web}}: Missing or empty |title= (help)
  25. ↑ https://web.archive.org/web/20230601165131/https://recyclingtoday.com/news/bluescope-new-zealand-steel-glenbrook-recycling-scrap-investment/. Archived from the original on 2023-06-01. {{cite web}}: Missing or empty |title= (help)
  26. ↑ 26.0 26.1 26.2 26.3 (PDF) https://web.archive.org/web/20240911153633/https://www.bluescope.com/content/dam/bluescope/corporate/bluescope-com/sustainability/documents/2023_BlueScope_Report_Sustainability_Data_Supplement.pdf. Archived from the original (PDF) on 2024-09-11. {{cite web}}: Missing or empty |title= (help)
  27. ↑ 27.0 27.1 27.2 27.3 https://www.youtube.com/watch?v=KM4meAdAWYY. {{cite web}}: Missing or empty |title= (help)
  28. ↑ 28.0 28.1 28.2 https://web.archive.org/web/20230521092936/https://www.nzsteel.co.nz/new-zealand-steel/electric-arc-furnace/. Archived from the original on 2023-05-21. {{cite web}}: Missing or empty |title= (help)

Resources

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