Question: how many kwh does a solar panel produce in a year?
Answer: Power Output of a 5kW Solar Panel System The system will generate approximately 20 kWh per day and will produce around 4,500 kWh of electricity per year. The size of a system will determine how many panels you need. A 5kW solar system is made up of 20 solar panels, assuming that the panels have 250 watt capacity.