NZ producers had their margins squeezed by rising electricity and gas prices in June.

MBIE appeal could make it easier. Made with funding from NZ On Air.

Contact Energy reported a 10 per cent fall in underlying earnings.

NZ Windfarms to buy Te Rere Hau wind farm distribution assets from Powerco for $17.3m.

Drivers had to pick a day of the week on which they wouldn't drive their car.

Vector and the council should be more open about the solar bridge lighting project.

NZ First leader Winston Peters says report on sale options for Transpower is suspicious.

Drivers will only be able to buy electric cars in Britain from 2040.

Trustpower sees earnings rising as much as 12 per cent.

Vector is refusing to pay back $13.9 million to Aucklanders after overcharging them.

COMMENT: New sales at record but many may be obsolete in a generation.

The Greens have reprised plans to create a $100m bank for green projects.

Science reporter Jamie Morton looks at the case for more green buildings in Auckland.

Families are getting a boost from Labour with more money and a $3000 "baby bonus".

COMMENT: A mandated approach to renewable energy is good news for NZ.

What can the City of Sails learn from the City of Light to make itself greener?

The policy is part of a wider package Labour will reveal tomorrow.

Vector is to repay $13.9m to Aucklanders who paid too much for their electricity.

Vector beat rivals to supply an Australian firm with battery storage technology

Mark Binns steered Meridian Energy from state-owned enterprise to NZX heavyweight.

Silent, slow-slip earthquakes could offer stress relief for under-pressure fault zones.

Celebrities, scientists, doctors and businesspeople join a new push for climate action.

An Alpine Fault earthquake could cut the West Coast from the main grid for many weeks.

If you have a heart attack outside hospital in the future, you could be saved by a drone.

Mercury Energy raised its 2017 earnings guidance for a third time.

Rex Tillerson said the US record on climate change is unparalleled. Is he right?

Home heating should be seen as a system including insulation, ventilation and adding heat.

Trump is expected to ignore Elon Musk's advice to stick with the Paris Accord.

The Electricity Authority says 6170 homes have been disconnected in the last few months.

The Regional Council is remaining staunch on proposed oil and gas prohibition.