Kiwis sick of pesky salespeople knocking on their doors in the middle of dinner are in for some relief.

An Auckland lawyer is warning about solar panel issues, saying house buyers and sellers could fall into a trap if they don't know who owns them.

Despite environmental concerns, the technology that revolutionised the energy industry is spreading all over the world.

The National Government's asset sale programme is complete but the debate about the process just won't go away.

Warehouse boss Mark Powell wasn't afraid to speak candidly about his pay packet with business journalists in Auckland last week.

Prices and who controls them is already an issue for this year's election, writes Fran O'Sullivan. The "market rules OK?" is not the kind of slogan that opposition parties are chanting.

A power company is offering the chance to pay all household costs in one bill - but consumer groups warn the convenience may come at a cost.

The Government will today announce energy-efficiency plans it says will improve business productivity and reduce carbon emissions while saving money.

Intense investor interest in the upcoming float of Genesis Energy is forcing a heavy scaling back of broker and institutional share allocations well before the April 14 deadline.

A New Zealand-based biotech firm with links to Barack Obama's re-election campaign manager is moving to North America.

Z Energy is banking on biodiesel users paying a premium for the fuel it plans to produce at an Auckland plant using animal fat.

Pricing for the Genesis Energy share offer means the Govt's controversial partial asset sales programme will just make it over the line for the revised $4.6b to $5b target set after Solid Energy was taken off the block.

New Zealand-founded bio-fuels innovator LanzaTech has attracted US$60 million in its latest capital-raising round,

The Treasury would have liked more "Mum and Dad" small investors to have bought shares in electricity generators Mighty River Power and Meridian Energy.

The share price for Genesis Energy will likely be set in the mid to upper end of its range in light of the Government's decision to sell up to the full 49 per cent, say analysts.

The government will sell 49 per cent of Genesis Energy after feedback from institutions and brokers gave it confidence it didn't need to reduce the size of the selldown.

If the price is set too low, money is left on the table and assets can be sold off at a discount, writes Christoph Schumacher and Sasha Molchanov. This is neither desirable nor efficient.

Genesis Energy chief executive Albert Brantley, speaking at the launch of the Genesis Energy offer, complained about the company being labelled the "ugly duckling".

The Treasury has finally developed a fair and widely accepted process for the Genesis Energy IPO, writes Brian Gaynor.

The NZ Super Fund is taking a punt on US oil and gas exploration - putting nearly $300m into a private equity energy fund.

On Monday week we will get the carefully considered collective view of hundreds of experts on the likely impacts of climate change, including the impacts on New Zealand.