New Zealand may raise $NZ1.92bn from Mighty River Power share sale THE New Zealand government may raise as much as $NZ1.92 billion ($1.55bn) from the sale of shares in a power producer, its first privatisation in more than a decade. Mighty River Power will likely list in Australia and New Zealand on May 10, as part of the government's program to raise up to $NZ7bn to help it return to a budget surplus by the fiscal year ending June 2015.