Investors wanting more certainty around Labour-Greens policy for overhauling the electricity sector before the election appear to be out of luck.

Independent research house Morningstar has valued state-owned Genesis Energy at around $1.69 billion to $1.89 billion in total, or about $3.25 to $3.50 a share.

The operator of a Northland geothermal plant has denied Fire Service reports 30,000 litres of gas is leaking after an explosion at the site.

Mighty River Power remains on track to meet forecast full-year profit for the year but is wary of falling lake levels feeding its central North Island hydro dams.

The structure of the Genesis Energy float is unusual but makes sense given the complexities of the company, says one investment banker.

John Key has confirmed the partial privatisation of Genesis Energy will begin soon but has underlined the sale will be the last one under a National Government.

Solar power systems can save households money, but don't expect them to eliminate your power bill.

Newly NZX-listed Meridian Energy beat its prospectus forecast for earnings thanks to high inflows to hydro lakes.

BP will lease space for its new head office in Mansons TCLM's newly constructed five green-star rated building at 73 Remuera Rd in Newmarket.

Contact Energy reported a 5 per cent improvement in earnings with improved sales and lower wholesale electricity prices.

All in all, the Greens' scheme will appeal mainly to those who crave energy independence - not anywhere near the 10,000 a year the party predicts will install solar panels.

Your Views: Under the Solar Homes scheme, New Zealanders would be able to borrow up to $15,000 from the Government to install photovoltaic panels and then pay it back via their council rates over 15 years. Is this a good idea?

The Government will loan households up to $15,000 at low interest rates to help them install solar power if the Greens are elected.

Prime Minister John Key has defended his Government's $30 million payout to the owners of the Tiwai Point aluminium smelter after the Greens and Labour said parent company Rio Tinto's US$3.7 billion profit showed the payment was unjustified.

Profits are up 10pc at world mining giant Rio Tinto - in a year where NZ taxpayers paid the company $30m to keep the Tiwai Pt smelter open.

Opposition's single-buyer model misses target, Business NZ-sponsored probe finds.

In the socialist state of Venezuela that is home to the world's largest oil and gas reserves, petrol is cheaper than water. But not for much longer.

Feel you're paying too much for electricity? Not according to a new report, which says consumers never actually paid the full cost of building NZ's power stations.

Shares in lightbulb maker Energy Mad surged after it announced it had begun selling its energy-efficient products online in the United States through internet retail giant Amazon.

A ''rapid response'' team of up to 260 people has been set up to take to the water to hinder Anadarko's deep-sea drilling operations.