Hotter and deeper: how NZ’s plan to drill for ‘supercritical’ geothermal energy holds promise and risk
2 Apr 2025

Image: Gretar Ívarsson, geologist at Nesjavellir
Nesjavellir Geothermal Power Station in Iceland
By David Dempsey, University of Canterbury
New Zealand’s North Island features a number of geothermal systems, several of which are used to generate some 1,000 MegaWatts of electricity. But deeper down there may be even more potential.