This paper presents and discusses a general overview of solar cooling and airconditioning systems (SCACSs) used for building applications. The popular SCACSs driven by solar thermal energy are elaborated in detail, considering their operation and development aspects. Therefore it focuses on the most widely applied type of active cooling appliance: single split-type air condit oning systems with a cooling capacity up to 5 kW. Space cooling in buildings is characterized by enormous growth rates, due to increasing ambient temperatures, growing population and. Solar energy has been introduced as a crucial alternative for many applications, including cooling and airconditioning, which has been proven to be a reliable and excellent energy source. Here's exactly how we run air conditioning on solar power, the planning steps we followed, and the real-world tactics that make it work through heat waves, cloudy spells, and nighttime hours.