An alternative cooling method for Bitcoin mining centers, large buildings, airports, hotels, hospitals etc that is not frequently considered, is seawater air-conditioning (SWAC)—a renewable alternative for cooling that involves pumping seawater from ocean depths of around 700 to 1200 meters and temperatures of 3°C to 5°C to the coast, where it exchanges heat with a district cooling system. SWAC uses up to 90% less electricity when compared to conventional air conditioning systems.