Estimate your solar energy production per m² with accurate calculations for any location. Free calculator with multiple units, efficiency modes, and detailed visualizations. This calculator provides estimates only and should not be used as the sole basis for solar system purchases or financial. . How much energy does a solar panel use per square meter? On average,you can expect around 850 to 1,100 kilowatt-hours(kWh) of solar energy per square meter (approximately 10. . Solar panels have become a cornerstone of renewable energy, but many wonder: How much power can a single square meter of solar panels actually produce? Let's break down the science behind photovoltaic efficiency. Rooftop potential is not equivalent to the economic or market potential for rooftop solar—it doesn't consider availability or cost.