Te Arawa landowners have formed a working party to coordinate development of their geothermal resources.
Working party secretary Willie Te Aho says there is potential for up to 400 megawatts of generation on Maori land from Rotoiti through to just north of Taupo.
A hui last week heard from Contact Energy, Mighty River Power and from Tuaropaki Trust, which has a geothermal plant on its land.
Mr Te Aho told Waatea News that a unified approach is needed to get the most out of the taonga.
He said geothermal development could be worth $2 billion to the region.
