The average solar photovoltaic (PV) system can produce between 1,200 to 1,500 kilowatt-hours (kWh) annually for every installed megawatt. . Estimates the energy production of grid-connected photovoltaic (PV) energy systems throughout the world. It allows homeowners, small building owners, installers and manufacturers to easily develop estimates of the performance of potential PV installations. Operated by the Alliance for Sustainable. . How much electricity does solar energy generate per megawatt? 1. Solar energy can generate a significant amount of electricity per megawatt, influenced by several factors such as location, technology, and efficiency of solar panels. Various factors, such as solar irradiance, weather conditions, panel orientation, and shading, influence the actual power output of a solar farm. On a sunny day with optimal. .