October 2024 ERC update:
- The controlled hydro storage position has remained above average since our last ERC update on 20 September due to above average inflows, high wind generation and reduced demand due to warmer weather and reduced industrial load.
- The chart now shows the contingent storage which is available in an Alert and Emergency status setting.
- The risk curves for 2025 have reduced. The reduction is largely due to an increase in thermal fuel capability including coal import rates; forecast gas production; coal stockpile and gas storage levels at Ahuroa. To realise this reduction in the 2025 risk position means increased thermal fuel capability being brought to market by participants contracting and trading activity. This can support an increased thermal generation response under any extended periods of low inflow.
- Continued focus on fuel management for 2025 is therefore crucial to reduce the security of supply risks.
The graphs below compare New Zealand and South Island controlled storage to the relevant Electricity Risk Status Curves.
To learn more about the Electricity Risk Curves click here.
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Related Files
Electricity Risk Curve Files
ERC data file.xlsx
(XLSX 26.26 KB)
Assumptions and Update Logs
ERC Update October 2024.pdf
(PDF 1.99 MB)
- Historic Logs
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ERC Update September 2024.pdf (PDF 1.92 MB)ERC_Update_August_V2_2024.pdf (PDF 1.93 MB)ERC update - August 2024.pdf (PDF 1.9 MB)ERC Update Log - July 2024.pdf (PDF 1.91 MB)ERC Update Log - April 2024.pdf (PDF 2.16 MB)ERC Update Log - March 2024.pdf (PDF 2.71 MB)ERC Update Log - February 2024.pdf (PDF 2.71 MB)ERC update - January 2024 Gas Reallocation.pdf (PDF 1.53 MB)ERC update log - January 2024.pdf (PDF 2.03 MB)ERC Update Log - December 2023.pdf (PDF 2.01 MB)ERC Update Log - November 2023.pdf (PDF 2.06 MB)ERC Update Log - October 2023.pdf (PDF 1.88 MB)ERC Update Log - September 2023.pdf (PDF 1.85 MB)ERC Update Log - August 2023.pdf (PDF 1.88 MB)ERC Update Log - July 2023.pdf (PDF 1.93 MB)
- Scenarios
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ERC Update Log - Early Tauhara Scenario - April 2024.pdf (PDF 1.66 MB)ERC Update - November 2023 Gas Reallocation.pdf (PDF 1.75 MB)ERC Update - November 2023 Additional Rankine .pdf (PDF 1.75 MB)ERC Gas Reallocation Scenario October 2023.pdf (PDF 1.43 MB)