Commissioned in November 1958, Wairākei power plant is situated on the Wairākei geothermal system. Wairākei, the first geothermal plant of its kind in the world, is an iconic symbol of New Zealand's electricity generation system. The Wairākei A and B stations have 10 steam turbines ranging in size from 4–30 megawatts (MW). The station's capacity is 132 MW.

Te Mihi geothermal power station is part of Contact's dedication to provide safe, reliable and efficient electricity. Te Mihi uses heat from deep inside the earth to generate electricity. Te Mihi has a 166 megawatt (MW) of generating capacity, enough to power over 160,000 Kiwi homes and is located on the Wairakei geothermal field, northwest of Taupō.

The Ohaaki geothermal power station was commissioned in 1989. Production wells at Ohaaki are, on average, 1.2 km deep and reach water at temperatures up to 280°C. The most distinctive feature at Ohaaki is the 105 metre high cooling tower. Using natural convection, the tower cools the water used to condense the steam as it exits the power turbines.

The Poihipi Road power station was commissioned in 1997 and was bought by Contact in 2000. It is situated on the Wairakei geothermal system and is now operated as an integrated part of Wairakei steamfield. Poihipi has a capacity of 50 MW.

Commissioned in 1996, TCC produces 377MW of electricity. It provides a secure supply of electricity, while the country  increases the level of electricity generated from renewable sources. Adjacent is the Stratford Peakers, two fast-start gas turbine peaking units that can go from a cold start to full load in just 10 minutes and generate up to 200 MW.