Utility solar project adds molten salt for storage

SolarReserve said on Tuesday it has signed a deal to build a utility-scale solar plant in Nevada with a molten salt storage system that will let it supply power when the sun isn't shining.

The Santa Monica, Calif.-based company has a 25-year power purchase agreement with utility NV Energy to supply about 480,000 megawatt-hours of electricity a year, enough to power about 75,000 homes during peak times. The capacity of the concentrating solar system will be 100 megawatts and be located near the town of Tonopah in Nye County, Nev.

The plant will use a field of heliostats--large mirrors that track the movement of the sun--to heat molten salt held in a tower. That liquid salt is heated to over 1,000 degrees Fahrenheit and transferred to storage tanks. It is then fed into a loop where it creates steam that turns a turbine to generate electricity. The colder molten salt is recaptured and fed back into tanks to be heated again.

For further information: CNET