So, for example, if a 1MW solar farm gets an average of 5 peak sun hours per day, then it can produce 5MWh per day or 1,825MWh per year (1,825,000kWh of electricity). With an average household yearly consumption of 10,791 kWh, that's enough energy to power around 170 homes. Typically, solar farms are measured in megawatts (MW), where one MW is equal to one million watts. Areas with abundant sunshine, such as the southwestern United States, can produce much more energy than regions with. With approximately 266. 5 million kilowatt-hours (kWh) of electricity per year. A US national average can be calculated using capacity factor data from the solar panel industry. 6% in 2027, when it reaches an annual total of 4,423 BkWh.