The Internet of Things (IoT) is an ecosystem of connected physical objects that are accessible through the Internet. On the basis of IoT, the temperature of the solar panel can be controlled anytime and anywhere through a smartphone. Solar photovoltaic systems are renewable energy sources that are used widely around the world. Solar system efficiency decreases due to weather conditions and unexpected situations. The increasing population worldwide has led to an increased demand for energy. Fossil fuels are not an ideal source for future energy, and the excessive use of fossil fuels causes environmental problems. The chapter examines solar power generation using solar panels and its challenges during energy production. Various solutions have been proposed to prevent the efficiency decrease from such a temperature rise. First, a cooling fan is used to lower the temperature of the solar panel. Second, the back of the panel can be attached to a heat sink.