The owners of the National Grid here in NZ have been warned that should thier price increases next year exceed the pre-set threshold, that they could be subject to regulation.
Here's an article from Stuff.co.nz:
Warning for Transpower over price rise

It's been no secret here that the average consumer has been getting ripped off as far as prices go here, since the reforms bought in in 1992 were supposed to make power cheaper.
The CEO of Transpower "earns" NZ$4052 a day!. [Linked Image]