Chart of the day

Graph of the Day: New Zealand heads towards 100 pct renewables

Published by

New Zealand is often thought of as highly renewable grid – and it has been, thanks to its huge resources in hydro and geothermal generation. But it still has a lot of thermal generation, which increased significantly at the turn of the century.

Over the last decade, that has started to turn, and the move away from thermal generation is now accelerating with the arrival of the first big solar farms, the rollout of the first big batteries, and the construction of more wind projects.

This graph (below) from Meridian Energy, the country’s biggest generation company – and which last week secured approval for a 120 MW solar farm – illustrates the scale of that transition.

Source: Merdian Energy

“Between 2010 and 2025 New Zealand saw a huge amount of new generation to replace aging thermal facilities,” Meridian says in a post on LinkedIn.

“Since then, there has been some big geothermal come online, and we’re seeing huge growth in wind, BESS (battery storage) and solar generation, with hydro and geothermal remaining as the generation base.

“As more and more renewable generation comes online, we can expect to see cleaner, cheaper energy for New Zealand’s homes and businesses.”

According to the graph above, the last of the fossil fuel (thermal) generators is squeezed out of the system by around 2040.

Giles Parkinson is founder and editor-in-chief of Renew Economy, and founder and editor of its EV-focused sister site The Driven. He is the co-host of the weekly Energy Insiders Podcast. Giles has been a journalist for more than 40 years and is a former deputy editor of the Australian Financial Review. You can find him on LinkedIn and on Twitter.

Giles Parkinson

Giles Parkinson is founder and editor-in-chief of Renew Economy, and founder and editor of its EV-focused sister site The Driven. He is the co-host of the weekly Energy Insiders Podcast. Giles has been a journalist for more than 40 years and is a former deputy editor of the Australian Financial Review. You can find him on LinkedIn and on Twitter.

Share
Published by

Recent Posts

Construction and concrete pours begin on third stage of massive battery, adding another 312 Tesla Megapacks

Work is underway on the third stage of a massive battery energy storage system being…

15 April 2026

State extends solar rebates for apartments for an extra year, to meet “huge interest”

State government announces extension of Solar for Apartments program, to help more households traditionally locked…

15 April 2026

Can networks solve Australia’s “chicken-and-egg” EV problem? The battle for control of kerbside charging

Network companies say they have a simple fix for the "chicken-and-egg" EV uptake problem –…

14 April 2026

“Boots on the ground:” Site works begin at Neoen’s first 6-hour big battery

On-site works are officially underway at Neoen Australia's first six-hour battery, as the ground-breaking project…

14 April 2026

Queensland LNP want oil and gas project fast-tracked, even as it erects stop sign for wind and solar

Queensland is launching a last ditch fight against the EPBC reforms as it tries to…

14 April 2026

Danish giant sells giga-scale battery as project readies to hit the grid

Danish energy giant sells South Australia's first giga-scale battery, with energisation to start in May.

14 April 2026