Why do electric companies need water?

Water is an essential part of the electrical generating process at steam-electric power plants. The plants generate heat, either through the burning of fossil fuels, or in the case of a nuclear plant, through a nuclear reaction. Water is pumped into the area and turned to steam by the heat. That steam builds pressure, which turns the turbines that generate electricity.  After passing through the turbines, the spent steam must be cooled to remove the remaining heat from the process.  Water from the Brazos River is used to help generate electricity at a variety of power plants throughout the basin.