Mighty River Power and the Tuwharetoa Maori Trust Board have signed a deal over water in Lake Taupo, the terms of which the electricity generator says are confidential.

Kim Campbell has organised a meeting this afternoon to discuss strategies to soften up Aucklanders for the sale of the remaining shares in lines company Vector to pay for new roads.

Nobel Laureate and former United States Energy Secretary Steven Chu says New Zealand has an opportunity to quickly ramp up its use of renewable energy because of the huge strides being made in wind,....

Winston Peters writes: There is a group of people who want to get rid of the Auckland Energy Consumer Trust. But why fix what isn't broken?

Pulse Energy reported a net loss of $9.99 million, or 2.9 cents per share, in the six months ended September 30.

Geothermal has pipped gas generation for the first time as more plants come on stream.

Biofuel developer LanzaTech's coffers have been bolstered with a US$60 million ($78.5 million) cash injection from the New Zealand Superannuation Fund.

Simon Bridges dropped into Team BMW in Newmarket recently for the launch of its new ibrand electric car.

The big kids are having a party, and this year it's at Australia's place. New Zealand, as the host's little sibling, gets to come along, too. We're under strict instructions not to touch the buffet and to stay well away from the fruit punch.

Land bought by Meridian for its controversial $2b wind farm is on the market spelling the final chapter of the failed project.

Mr and Mrs Popularity will meet again today in Auckland when German Chancellor Angela Merkel jets into town to meet Prime Minister John Key.

If I were running Mercury, I'd regard people like myself as perfect customers, writes Brian Rudman.

New Zealand-founded LanzaTech has been named the world’s hottest bioenergy company in a prestigious annual list.

Infratil will return $120m to shareholders as a special dividend after it sold its Australian energy assets for a net $670m.

Call me a Luddite, but I don't want a "smart" electricity meter installed at home, and certainly not without my knowledge or consent.

Google, Yahoo and Microsoft are part of a growing number of firms that are entering into power purchase agreements with wind farms.

Mighty River Power has announced a possible $50 million share buy-back in the coming year.

Finance Minister Bill English has defended big bonus payments and pay rises to the bosses of the newly partially privatised energy companies, saying they were paid below market rates when the....

Made up your mind to get solar panels on your roof? Here's what you need to know.

For many, the moment of deepest despair comes as they turn their backs on the swanky seaside suburb of St Heliers.

A husband and wife team could help change the way products as common as car tyres are made by recycling chemicals from greenhouse gases.

Vector says compensation from this month's power cuts - which affected 85,000 customers - won't be discussed until the cause of the fire that sparked them was known.

Up to 80 per cent of Auckland electricity customers have signed contracts that allow their hot water to be cut off - but many were unaware until the blackouts.

Some Auckland residents were without hot water until late this morning following yet another fault with Vector’s electricity network.

Vector has warned recently restored power users to expect to be 'dropped' from the system during peak times today, as a former chairman criticises the company.

The Herald looks at how the Auckland blackout affected each suburb and what residents and shop owners did to cope.

A former Mighty River Power engineer accused of $2 million fraud at the company has pleaded not guilty this morning.