Underground solar container cavern

On a plain in western Utah, two massive caverns—each roughly big enough to house the Empire State Building—are being hollowed out of rock salt a mile underground. It is important to create sufficient energy buffers to keep supply and demand in balance. We are pioneers in underground salt cavern development, delivering safe and scalable energy storage solutions for natural gas, hydrogen, compressed air and more. But the heart of the project will be a cavern, roughly the size of a football field in length and width and about 100 yards high, carved by miners out of the bedrock about 2, 000 feet below the surface, VanWalleghem said.