Renewable, but not exactly clean: Climate report hints at debate over NZ's newest power plant 8 Feb, 2021 09:00 PM 4 minutes to read The Ngawha Power Station reduces Northland's need to get power from elsewhere, but its emissions are significantly higher than most other geothermal stations. Photo / Top Energy The Ngawha Power Station reduces Northland's need to get power from elsewhere, but its emissions are significantly higher than most other geothermal stations. Photo / Top Energy The Climate Change Commission's advice to the Government calls for a major change to electricity generation, with more wind and low-emission geothermal and less coal and gas. But what about the high-emission geothermal?