Energy · 1967
Binary-cycle geothermal
A low-boiling working fluid turns merely warm water into electricity.
The Paratunka plant in Kamchatka demonstrated binary-cycle generation in 1967 using water at about 81 C. Binary cycles opened geothermal to far more sites than rare dry-steam fields.
What it built on 1
What it led to 1
Related measurements
The dashed line marks when it first worked.
Share of electricity from low-carbon sources Latest: 42.6 % (2025) Source: Our World in Data
World electricity generation Latest: 31.8k TWh (2025) Source: Our World in Data