Our biggest electricity retailer says lower power, gas and oil prices, along with competition, has hit its annual earnings.

Mercury, formerly known as Mighty River Power, has delivered a 2.3 percent lift in operating earnings and declared a special dividend.

The businesses which bought the most cheap, worthless carbon credits to meet their climate change commitments have been revealed in a new report.

Australia has blocked a A$10 billion deal to lease its biggest electricity grid to Chinese and Hong Kong investors because of "national security".

Around 400 properties in Hawke's Bay and Taupo have been without power since wild weather hit on Saturday morning, and it's unlikely to be restored to many for more than a week.

You probably don't know him, but Al Kahn is likely to have had an enormous influence on your life.

Auckland-based Mercury has swapped its Roman god logo for a bee.

Online electricity retailer Flick Electric has raised a further $5 million from shareholders to fund its growth.

Power prices are an ongoing worry for many people, who hold back heating their homes in a bid to cut down on the power bill, a survey shows.

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

Cheaper in the South, dearer in the North - a charging proposal for electricity transmission has been released today.

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

Genesis Energy has negotiated a high price from other generators who want to keep them as back-up.

Air New Zealand is buying electric vehicles for its ground fleet in a move that will boost the EV sector in this country.

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

Emergency services have contacted Vector to advise them of the issue which happened at around 7:30pm.

Contact's selling its Auckland power station to a property developer.

Former Contact Energy director Phil Pryke is an Australian prawn fisherman-turned-hippie, who washed up here in the mid-1970. Pattrick Smellie writes that he has never been far from controversy since.

Homeowners who suffered up to three days without power during a huge blackout will get just $50 each.

Vector has launched the first rapid electric vehicle chargers in downtown Auckland.

Executive Mark Binns says a new wind farm is one of the options on the table if Meridian can't convince Genesis to keep open two electricity plants.

Vector has sold its New Zealand gas business to global utilities investment fund First State.

The way electricity lines companies charge for their services is all wrong and needs to change if we are to take advantage of emerging technologies, the Electricity Authority says.

People rushed to call friends, send texts, share moments on social media during and after the Rugby World Cup final yesterday morning.

Gusts up to 170km/h in the South Island, leave emergency services inundated with calls.

A startling slump in the price of aluminium on global markets is more than offsetting a 20 per cent fall in the New Zealand dollar against the greenback.

A man who was trapped in his crashed car beneath live wires for almost two hours probably would have died even if there wasn't a delay in treating him, a coroner has found.

This week, Small Business editor Caitlyn Sykes talks to business owners about their firms' governance structures.

Contact Energy is facing growing pressure from institutional investors over its governance structure.