Rejuvenating ageing hydro generation will cost millions

Rejuvenating ageing hydro generation will cost millions
The Maraetai hydro scheme on the Waikato River. (Image: Mercury)
Ian Llewellyn
The age of New Zealand’s hydro generation fleet and the cost of keeping it running and improving performance has been highlighted in Mercury’s recent investment day.The major generator/retailer outlined its plans for the future, which include reinvestment in existing assets. These include its hydro stations, which dominate the Taupō catchment and the Waikato River.In all, it has nine dam structures on the Waikato hydro system aged 60 to 97 years.About $350 million will be spent on hydro rejuvenation over the next 15 years, which Mer...

More Energy

TTR seabed mining bid not affected by law change
Primary Sector

TTR seabed mining bid not affected by law change

No-go zones will not apply to controversial mining bid.

If Māui closes, Methanex's future is murky says Fuge
Markets

If Māui closes, Methanex's future is murky says Fuge

A constant state of unease is needed in the energy sector says Contact boss.

Ian Llewellyn 17 Sep 2025
Govt to change offshore renewable regime
Primary Sector

Govt to change offshore renewable regime

No-go zones for seabed mining proposed.

Ian Llewellyn 17 Sep 2025
What will ministers tell electricity bosses?
Policy Analysis

What will ministers tell electricity bosses?

The urge for electricity market reform is strong, but needs to solve the right problems.

Pattrick Smellie 11 Sep 2025