Solar-driven saturated-steam system delivering controllable process steam at 120–235°C for industrial sectors (food, wood, paper, plastics) and for combined power/desalination/cooling processes to replace fossil fuels. Features include a weather-resistant opening/closing mechanism, automatic cleaning and vacuum technology, ~40 kW thermal output per unit, dual land-use suitability (agriculture, parking/roofs), rapid disaster deployment, and >20-year lifespan with short payback.