BP, Caltex and Z Energy have raised the price of petrol five cents a litre - but Gull NZ says a price increase is unnecessary.

Global market turmoil is not likely to prevent the sale of 49 per cent of Mighty River Power, says Bill English.

The government will probably stump up around $100 million in fees to investment banks preparing the partial sell-down of state-owned energy companies.

The incoming National Government says it will sell partial stakes in state owned enterprises. See what's on offer in this Herald graphic.