The station connects to the single-circuit Wairakei to Whakamaru A line (WRK-WKM-A) at the substation to the south of the powerhouse, with electricity being distributed to Taupo and the southern Waikato, and further north to Hamilton and Auckland.
Here, the highway meets the Waikato River at the top of Lake Maraetai, and follows the river upstream to Whakamaru, where it crosses the Waikato on top of the Whakamaru hydroelectric dam.
The largest transmission route is to New Zealand's largest city, Auckland, approximately 200 km to the north - three 220 kV circuits connect Whakamaru to Otahuhu in southern Auckland, with an additional circuit serving Otahuhu via Hamilton.