Abstract: A prefabricated hydro-electric generating station comprising a vertical turbine having a Francis runner, a distributor and upper and lower stayvane rings with stayvanes extending therebetween; a generator and associated running gear for generating electrical power operatively connected to the Francis runner; a housing having walls mounted on said upper stayvane ring of said turbine and supporting said generator and running gear; said upper stayvane ring of said turbine providing vertical, lateral and torsional support for said housing generator and associated running gear mounted in said housing; said lower stayvane ring being adapted for mounting on a base to support said hydro-electric generating station in an operative position.