Mercury Energy raised its 2017 earnings guidance for a third time.

Home heating should be seen as a system including insulation, ventilation and adding heat.

Trump is expected to ignore Elon Musk's advice to stick with the Paris Accord.

The Electricity Authority says 6170 homes have been disconnected in the last few months.

Expert says Fisher & Paykel Healthcare and A2 popular.

There are ways to save on your power without shivering through winter.

Low inflows of water into the South Island's hydro lakes are expected to knock Contact.

Oil's rebound ran out of steam as investors focus on production OPEC can do nothing about.

Meridian Energy says the uptake of electric vehicles will not strain power generation.

Genesis Energy has agreed to but the LPG business of Todd Corp's Nova Energy for $192m.

COMMENT: Problems can rise in scaling start-ups into a larger sustainable company.

COMMENT: More renewables, winter energy subsidy feature in party's electricity policy.

The kingdom prepares to sell Saudi Aramco and ease its economic reliance on oil.

Heavy rain in Waikato catchment has lifted the company's hydro generation.

Legal action by Forest & Bird has prompted a U-turn over the proposed Te Kuha coal mine.

Trustpower says strong Australian generation lifted FY17 earnings near top of guidance.

New Zealand Oil & Gas says there are potential partners for a deepwater Barque prospect.

Oil jumped as the US missile attack against Syria roiled global financial markets.

This year distributions are down on last year - Made with funding from NZ On Air.

Contact Energy is enticing customers off Fly Buys with 50 cents a litre off fuel.

COMMENT: The Shareholders' Association is on the warpath.

COMMENT: Report points to a big change in the way we use the land.

Energy Minister Judith Collins expects oil and gas exploration activity will return.

KiwiSaver is a fantastic long-term superannuation scheme but it has one major drawback: limited domestic investment opportunities.

Windflow Technology widened its first-half loss and said it needs new injections of capital.

Vector acquired HRV and solar power firm PowerSmart for undisclosed sums.

Keep an eye on your local petrol pump. Prices shouldn't be rising soon, thanks to an oil price slump.

Dutch researchers have found that electronic energy meters can be wildly inaccurate.

Elon Musk just wagered he could solve Australia's looming energy crisis.

Todd Corp deputy chairman Malcolm Whyte has retired after 30 years as a director of the holding company for New Zealand's wealthiest