2013-3-6 Introducing Vapor Power Plants In solar plants,the energy required for vaporization originates in collected and concentrated solar radiation. Introducing Vapor Power Plants In geothermal plants,the energy required for vaporization originates in hot water and/or steam drawn from below the earth's surface. 52013-3-6 5 Introducing Vapor Power Plants ►In solar plants, the energy required for vaporization originates in collected and concentrated solar radiation. Introducing Vapor Power Plants ►In geothermal plants, the energy required for vaporization originates in hot water and/or steam drawn from below the earth’s surface