At Large with Toby Manhire

Think hot, think deep: The odds on a geothermal silver bullet for NZ’s energy future

Toby Manhire speaks to former government minister Tim Groser about the huge untapped potential of supercritical geothermal, and to Emma Gleason about the return of NZ Fashion Week.

17 Aug 2026

Print

More about the episode

Former National minister Tim Groser joins Toby to explain why they’re plunging a drill into the magma beneath the Taupō volcanic zone – and how supercritical geothermal success could prove a gamechanger for energy security, for climate change and for the economy as a whole.
Plus: In How Good, NZ Fashion Week is under way. Emma Gleason picks her highlights.
At Large with Toby Manhire is produced by Te Aihe Butler, Jin Fellet and The Spinoff. Read more at ⁠thespinoff.co.nz⁠.