New Zealanders should band together to demand the cheaper power prices offered to big industrial consumers, an industry expert says.

It's the great Kiwi power rort. A university researcher has found that New Zealand power prices have surged at twice the rate of nearly every other developed country over the past 30 years.

Kiwi power prices have increased at twice the rate of most other countries over the past three decades.

Backpacks on mussels? Researchers at the University of Iowa attached wireless sensor packages to Mississippi river mussels that measure how open their shells are.

Meridian Energy is considering the sale of its 50 per cent stake in the A$1 billion Macarthur wind farm in Australia.

Power bills have jumped more than $100 this year, latest figures show - but Auckland households can expect some reprieve next year.

NZ Aluminium Smelters has today announced a $70m spending cut for the Tiwai Point plant in Bluff.

Dry weather and a sluggish economy are the biggest challenges for New Zealand's electricity companies right now.

Workshop aims to explore provider switch for Turangi residents.

Meridian Energy is not a private enterprise but in negotiation with Rio Tinto it must act like one. If it can get a better power price elsewhere, Tiwai smelter must go.

Children in homes with prepaid power meters risk developing bronchial illnesses because many families run out of cash to keep the meters topped up, experts say.