Transpower New Zealand Limited
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Transpower New Zealand Limited (TPNZ) is the state-owned enterprise responsible for electric power transmission in New Zealand. Transpower performs two major functions in the New Zealand Electricity Market. As the grid owner it provides a platform for competition among electricity generation companies and as system operator it manages the real time operation of the grid. In the latter capacity it is similar to the Independent System Operator established by FERC in the United States.
Transpower was formed as a wholly owned subsidiary of the Electricity Corporation of New Zealand (ECNZ) in 1987. In 1994, it was separated from ECNZ and corporatised to become a state-owned enterprise with its own board of directors and Ministerial shareholders. The shareholders are the Minister of Finance and the Minister of State Owned Enterprises.
