Genesis secures more gas to curb New Zealand shortages

New Zealand upstream firm and utility Genesis Energy has secured emergency gas supplies for its dual gas- and coal-fired Huntly power station on the North Island.

Genesis has secured 3.2PJ (86mn m³) of gas to allow the 400MW No.5 unit at Huntly to reach full capacity for the first time this winter, it said on 13 August, describing the electricity grid as facing "unprecedented pressure".

An agreement has been reached with Canadian methanol manufacturer Methanex, which will shut its Motunui plants in the North Island's Taranaki province until the end of October to allow for more gas-fired power generation, Genesis said.

The commercial arrangements regarding the gas transfer are structured to provide Methanex with a base price for each unit of gas delivered, with further incremental value shared between the parties depending on electricity pricing over the period, it said on 12 August. Methanex's 1.72mn t/yr plant in Motunui has paused production in the past, also diverting feedstock natural gas to support electricity generation in the winter of 2021.

The 953MW Huntly — New Zealand's largest power station by capacity and the country's only coal-fired unit, has been under significant strain as dry, cold conditions have led to increased demand during winter as hydroelectricity inflows remain low. New Zealand has also experienced light winds cutting expected wind-powered generation this winter, with Genesis planning coal imports for the first time since 2022 in response to lower domestic gas output and rapidly falling coal stocks.

LNG imports investigated

New Zealand energy minister Simeon Brown told parliament on 7 August his administration was investigating two separate options to ease the gas shortfall in the short to medium term.

Industry body the Gas Industry Company (GIC) is studying the feasibility of importing LNG, while also considering policies to increase investment in flexible gas-fired generation, Brown said. Data from upstream firms released earlier this year show a significant drop in proven plus probable reserves, falling from 1,635PJ to 1,300PJ, he added.

Gas production into open access pipelines was 58.8PJ during January-June, GIC said in its April-June quarterly report, 20pc down on 73.7PJ a year earlier, while gas-fired power demand grew by 10pc against April-June 2023.

New Zealand's National Party-led government is aiming to overturn a 2018 ban on new oil and gas exploration with legislation to be introduced to parliament later this year.

By Tom Major