Contact's share price dropped this morning, partly in response to uncertainty over the future of the Tiwai Point aluminium smelter.

Prime Minister John Key says the government has "put its best foot forward" and will offer Rio Tinto no more than the short-term subsidy offered last week.

Auckland Museum is being touted as a green example for other city organisations after it succeeded in slashing its carbon footprint by 30 per cent in just two years.

Rio Tinto is doubtless more than happy that the Government has stepped in to try to broker a deal over the electricity supply contract for the Tiwai Pt aluminium smelter.

The Government has opened discussions with Tiwai Point aluminium smelter's ultimate owners Rio Tinto in a bid to broker a deal after talks between the smelter and Meridian Energy reportedly broke down.

Tiwai Pt aluminium smelter's owners have contradicted a report from Meridian, saying they think a power deal can be agreed on.

Consumers are putting their homes at risk by trusting unqualified solar power installers and substandard equipment, industry experts say.

If you've ever grabbed a pack of peas from the freezer to cool down a sprain or injury then you'll appreciate FrozenPeaz.

Millions of people around the world don't have a source of light once the day grows dark.

A flurry of last-minute pre-registrations for Mighty River Power shares is expected ahead of the Friday close-off.

Mighty River Power chairwoman Joan Withers has a formidable reputation for being one of the best communicators in business.

We're known for being clean and green, but Kiwis are still eating up at least twice their fair share of the planet when it comes to sustainability.

The record number of pre-registrations for Mighty River Power shares shows there is strong appetite for well-structured businesses, says one fund manager.

Wind turbines tend to be placed high up on towers to catch the air, but what say they could be only a metre or two off the ground and horizontal?

The 68 boxes carried onto Parliament's forecourt this afternoon contained 393,000 signatures. It is thought to be the biggest ever petition in support of a citizen's initiated referendum.

Labour Leader David Shearer says the fact someone was able to pre-register for Mighty River shares in his name shows how "shonky" the sales process is.

The Government will push ahead with asset sales regardless of a referendum on the issue, Finance Minister Bill English says.

The former head of Solid Energy has been called to front up to a parliamentary committee to answer questions on the failing coal company after opposition was dropped.

NZ firms are missing out on $1.6 billion in potential energy savings by not putting in place simple measures which a conservation group says could prove equivalent to a "killer app" for business.

Mighty River Power has admitted its $250 million investment in geothermal exploration in Chile could come to nothing, but believes it is worth the risk given Chile's massive geothermal resources and energy demands.