The New Zealand Electricity Market was the voluntary spot market which preceded the EC which took over from the NZEM on 1 March 2004.

New Zealand Electricity Market: the multilateral agreement where most wholesale electricity is bought by retailers and sold by generators on a half-hourly basis.

The New Zealand Electricity market. Refers to rules, which, along with MARIA rules, provide systems to track and measure the quantity of electricity sold, identify the buyer and seller, and match all of this information with the correct contract.