Aratiatia Power Station is a hydroelectric power station on the Waikato River, in the North Island of New Zealand. It is the first hydroelectric power station on the Waikato River, and is located 13 kilometres (8.1 mi) downstream of Lake Taupo. Aratiatia is owned and operated by Mighty River Power.Aratiatia is a largely run-of-the-river station, as it generates electricity from water from the Lake Taupo control gates and to the Ohakuri Power Station.