There's Government confidence new energy sector regulations will pressure down power prices.

Under Electricity Authority rule changes, our big four power companies must charge everyone the same price for supplying energy.

It's to stop the big gentailers giving themselves power discounts - and getting a competitive edge.

Energy Minister Simon Watts says it levels the playing field.

"The fact that these big gentailers can, in effect, cross-subsidise themselves means that the smaller players aren't getting a fair deal. These rules will stop them doing that, and as a result, we'll see more competition."

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