King Country Energy has warned the Electricity Authority's planned overhaul of grid charges will increase prices.

Z Energy is confident of the savings it can make from the $785m acquisition of Chevron's Caltex and Challenge! chains.

Homes in west Auckland are without power after a car hit a transformer.

Energy Minister Simon Bridges says the abundance of renewable electricity has made New Zealand complacent about energy productivity.

Z Energy is about to open the country's first commercial scale biofuels plant in a bid to become part of the emissions solution.

A trust that helps sport to spread the energy saving message has won the top honours at the EECA Awards.

Entrants in the EECA energy awards saved or generated the equivalent of the annual energy use in New Plymouth during the past year.

Some power customers could be in for a nasty jolt if proposed changes to national electricity grid costs go ahead.

The former state owned enterprise will soon be known as Mercury.

COMMENT: If we have the natural resources like wind, rain, sun and underground heat that can produce renewable electricity, we should harness it in the best way possible, writes Sam Judd.

New Zealand shares fell as demand dried up ahead of a Reserve Bank update, with Meridian Energy and Vector hit hardest.

After 22 years of producing clean electricity, New Zealand's first wind turbine is getting an upgrade today by owners Meridian Energy, writes Sam Judd.

New Zealand shares were mixed. The NZX 50 Index reached a record high but more companies fell.

Electric vehicles are far more useful to New Zealand for reducing carbon emissions than rooftop solar power, says a new study

New Zealand could become a major exporter of gas to Asia, Energy and Resources minister Simon Bridges says.

NZ Aluminium Smelters will go to the Supreme Court in a bid to overturn earlier decisions on the payment for statutory holidays that fell on a weekend.

WATCH: On the latest extra episode of The Economy Hub, guest panelists Bernard Doyle and Aaron Quintal discuss markets rebound.

Julian Kardos, managing director of Electric Kiwi, talks five things every Kiwi should know about electricity.

An expert from Norway says if New Zealand is serious about getting motorists into electric cars the government needs to act.

A meeting of oil producers to discuss a global pact on freezing production is unlikely to take place in Russia on March 20, inside sources say.

Even if Saudi Arabia wins its struggle with US shale producers over market share, it will face a new billion-barrel adversary.

It could soon be easier on the environment to have a shower or use the toilet in Auckland.

Global equity markets have received a boost from an upturn in crude oil as the market focused on a forthcoming meeting of major oil producers.

Saudi Arabia - Stung by falling oil prices, Saudi Arabia has cut spending and subsidies as part of harsh austerity measures that threaten the lavish welfare programs underpinning its stability.

The departing chief of Royal Dutch Shell's U.S. division says the failed quest to find crude in Arctic waters off Alaska is still a point of pride because it demonstrated the company's technical expertise.