MAHINERANGI WIND FARM

Mahinerangi Wind Farm (Stage 1) was commissioned in 2011 and we are moving ahead
with planning to construct Puke Kapo Hau (Stage2).

Mahinerangi

Turbines: 12
Installed capacity: 36MW
Estimated annual generation: 113GWh
Status: Commissioned in 2011
Investment: $70m

Puke Kapo Hau

Turbines: 40
Installed capacity: 192MW
Estimated annual generation: 535GWh
Status: Under development
Investment: $506m

Mahinerangi Wind Farm has been generating renewable energy for New Zealand since it was commissioned in 2011.

The 12-turbine, 36MW wind farm in Otago has been a strong performer. It has recorded an annual generation of 113GWh during its first 14 years of operation, enough energy to power the equivalent of about 14,000 residential homes every year.

Resource consent to build Mahinerangi was granted in the late 2000s and provided for up to 100 turbines with an installed capacity of 200MW.

In June 2026, Mahinerangi Wind Farm marked 15 years powering New Zealand.

We are now progressing plans to develop the balance of the consented wind farm with improvements to accommodate advances in technology.

The Stage 2 wind farm project will be known as Puke Kapo Hau.

This name was gifted to Mercury from Te Rūnaka o Ōtākou and it means “the hill that catches the wind”. 

The name describes the landscape around Mahinerangi Wind Farm, which “catches the wind”, as well as linking to the function of wind farms.

We achieved Fast-track approval to develop Puke Kapo Hau Wind Farm, Stage 2 of our Mahinerangi Wind Farm project in April 2026.