run-of-river power plants, river power plants, river power stations, run-of-the-river hydroelectricity, run-of-the-river power plants, run of river power stations
A hydraulic power station has no device to store water, and thus it is regulated by the amount of water the river supplies.
Run-of-the-river hydroelectricity (ROR) is a type of hydroelectric generation plant whereby little or no water storage is provided. Run-of-the-river power plants may have no water storage at all or a limited amount of storage, in which case the storage reservoir is referred to as pondage. A plant without pondage has no water storage and is, therefore, subject to seasonal river flows. Thus, the plant will operate as an intermittent energy source while a plant with pondage can regulate the water flow at all times and can serve as a peaking power plant or base load power plant.