Gas cheaper dry-year option than pumped hydro

Wed, 05 Aug 2020

Additional gas storage could provide about half the dry-year cover offered by the proposed $4 billion Lake Onslow pumped hydro scheme at about 5 percent of the cost, energy executives heard yesterday. Gas Industry Company chief executive Andrew Knight said the Lake Onslow project being studied by the government to provide a long-term dry-year reserve is a “good benchmark” to test alternatives against. The country has a choice to spend “$4 billion plus plus plus and build a big lake” at Lake Onslow in Central Otago or spend a “couple of hu...

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