The new power station, called OEC4, is located off Ngāwhā Springs Road on land to the north of the existing power station and the Ngāwhā Springs settlement.
The land it is built on is a mixture of flat to moderate to steep gradient terrain and includes areas of pasture, wetland, scrub, native bush and forest. Numerous watercourses feed into the Ngāwhā Stream. There is an abandoned mercury mine site of archaeological interest and a geothermal gully area known as the Hidden Walks within the site. These areas are not part of the project are not open to the public.
The image in the banner at the top of this page shows three production well heads after completion of drilling (mid 2019).