Investors will be looking for certainty from the state-owned power company's IPO. The hot issues:

PM tells post-cabinet press conference the next part-sale would be "an energy company", which experts consider would be Meridian Energy.

Plans for new connection stymied by low inflows into the country's hydro-electricity catchments.

Crucial face-to-face talks between the owners of the Tiwai Point aluminium smelter and electricity supplier Meridian Energy start again today.

Norman claims Rio Tinto has the government "over a barrel" because it has committed to the partial float of Mighty River Power in mid-May and doesn't want to see chaos in the electricity sector.