Let's explore a topic together: residential solar power. Should we install solar panels? How much does it cost? For example, if I only have a three-square-meter empty balcony, can I install solar panels in that three square meters? The answer is yes; we should make the most of the space. Let's talk about the setup. How much electricity can three solar panels generate per day? Considering it's summer and air conditioning uses a lot of power, assuming each solar panel is 650W, three solar panels would be 3 * 650 = 1,950 watts. Calculating the sunshine duration from morning to evening as six hours, that would be 1,950W * 6H = 11.7 kWh, or 11.7 kilowatt-hours. A balcony solar setup can generate 11.7 kWh a day. What can you use that 11.7 kWh for? Where does it go? For instance, a household refrigerator uses one to two kWh per day. A two-horsepower household air conditioner is approximately 1,800 watts. Running for five hours, it would consume about 9 kWh. So, installing three solar panels on your balcony can cover your refrigerator's daily electricity needs and even power a two-horsepower AC unit running at high power for five hours.