Located near Moffat in Dumfries and Galloway the original installation used three Canadian LH1000 Stream Engine turbines over vertical 150mm draft tubes. Each of the three Stream Engine turbines was in a separate compartment within the fore-bay tank. The offtake and screening was upstream of a small weir and supplied the first compartment in the fore-bay tank through two 305mm underground pipes. When the water supply was greater than the capacity of turbine No, 1, the water overflowed into the second compartment and turbine No. 2, and then into the third compartment and turbine No. 3. Whilst this arrangement was intended to accommodate a considerable variation in available flow it also caused substantial aeration of the water as it flowed over the partitions between the compartments, the Stream Engine turbines were each connected to SMA Windy Boy inverters through SMA overvoltage units.