In Extremadura, 200,000 mirrors focus sunlight onto a single 250-meter tower, driving temperatures to 565 degrees Celsius. But they do not turn all that heat directly into electricity. They pump it into 550,000 tons of liquid nitrate salt stored in massive twin insulated tanks.

 

The problem with solar power has always been the dark. Spain just bypassed it using hot salt.

In Extremadura, 200,000 mirrors focus sunlight onto a single 250-meter tower, driving temperatures to 565 degrees Celsius. But they do not turn all that heat directly into electricity. They pump it into 550,000 tons of liquid nitrate salt stored in massive twin insulated tanks.

The salt retains the heat with almost zero thermal loss. After the sun sets, the plant draws on that trapped heat to generate steam and spin turbines straight through the night. It outputs 500 megawatts of continuous power for 24 hours a day. No giant lithium battery farms required. Just mirrors, a tower, and thousands of tons of boiling salt doing the heavy lifting while the rest of the country sleeps.