Using geothermal energy for the production of power

The invention comprises an apparatus for enhancing the flow of geothermal fluid from at least one injection well to at least one production well, which comprises a first horizontal goethermal well, which is used as said injection well and into which water is injected; a second horizontal, geothermal well, which is used as said production well and from which geothermal fluid issues, wherein said second, horizontal, production, geothermal well is substantially horizontally and vertically spaced from said first, horizontal, injection, geothermal well and located at a shallower depth than said first, horizontal, injection, geothermal well; and means for producing a pressure difference between said first horizontal, injection well and said second horizontal, production well and utilizing the water density difference induced by he temperature difference. Preferably, binary geothermal power plants or combined cycle geothermal power plants can be used to produce power from geothermal fluid recovered from the production.