Electricity Authority chairman says the introduction of a centralised power buying agency will shrink the New Zealand economy.

Increased transmission and distribution costs are offset by a glut of generation capacity and far better information about the future path of wholesale prices, the Electricity Authority says.

Performance of regulators the Commerce Commission and the Electricity Authority slammed.

The Electricity Authority cuts through nearly two decades of argument on how best to charge for the cost of the national grid.

Small- and medium-sized businesses will be able to put their annual electricity consumption out to tender for the best price under the next phase of the Electricity Authority’s award-winning What’s My Number? campaign.