Want to know how to calculate solar panel output? Use this formula: Panel Wattage × Sun Hours Per Day ÷ 1000 = Daily kWh Output For example, a 300W panel in an area with 5 sun hours produces 1.5 kWh daily. Multiply by the number of panels in your system for total production. Consider efficiency losses for a more accurate estimate. https://solarsme.com/off-peak-electricity-hours-a-way-to-savings/