Plant X is our oldest major operating plant in the southwestern region. Unit 1 was brought online in 1952, Unit 2 was added in 1953, Unit 3 in 1955, and Unit 4 in 1964.
Plant X is one of our cleanest-performing generation plants. In fact, our Energy Supply department awarded the Plant X-Tolk Generating Station complex its environmental traveling trophy for several years of exceptional environmental performance with air, waste, and water.
The combined plants' water consumption was reduced by about 180 million gallons a year ever since we made Plant X is a zero-discharge facility. This means no process waters are discharged from the plant site. Operating in an arid region, we have developed a unique solution to reduce water supplies at two of our facilities, Plant X and nearby Tolk station. By creating a pipeline to send Plant X blowdown water (used water from plant operations) for recycling and additional fresh water to Tolk Station for treatment, we increased water recovery from Plant X, and eliminated the need for new sludge, disposal ponds, and a wastewater treatment system at the facility. As a result, the combined plants' water consumption was reduced by about 180 million gallons a year.
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