The Sandstone Solar Energy Project was an up to 1,600 megawatt (MW) solar thermal power project with 16 gigawatt-hours of energy storage,[2] planned just to the east of Tonopah, about 170 miles (270 km) northwest of Las Vegas.

The project was about up to eight 200 MW solar towers with integrated molten salt energy storage technology.

The project, developed by SolarReserve and owned by Sandstone Solar Energy, LLC.

[3] The project includes heliostats that collect and focus the sun's thermal energy to heat molten salt flowing through a solar power tower.

The molten salt circulates from the tower to a storage tank, where it is then used to produce steam and generate electricity.