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Mercury NZ Boosts Hydro Output as OEC5 Geothermal Unit Nears Completion
7:40am on Wednesday 21st of January, 2026 AEDT
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Energy
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Mercury NZ Boosts Hydro Output as OEC5 Geothermal Unit Nears Completion
7:40am on Wednesday 21st of January, 2026 AEDT
Key Points
National hydro inflows reach 98th percentile, lifting hydro generation by 23%
Wholesale electricity prices in Auckland average $40/MWh, easing forward prices to $135/MWh
Ngā Tamariki OEC5 geothermal unit commissioning underway, adding 390 GWh annually
Electricity demand rises 3.1%, driven by New Zealand Aluminium Smelter resuming full operations
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