Mighty River Power Limited is a New Zealand electricity generation and electricity retailing company. It was formed from the breakup of the Electricity Corporation of New Zealand (ECNZ) in 1999 as a result one of the reforms of the New Zealand Electricity Market 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.
The company owns and operates the hydroelectic generating stations on the Waikato River as well as geothermal plant in the Taupo area and a thermal plant at Marsden Point near Whangarei.
