How do I calculate what size solar system I need? To figure out how to size your solar system, take your daily kWh energy requirement and divide it by your peak sun hours to get the kW output. Then divide the kW output by your panel’s efficiency to get the estimated number of solar panels you’ll need for your system.
How big a solar system do I need to power my house? You can calculate how many solar panels you need by multiplying your household’s hourly energy requirement by the peak sunlight hours for your area and dividing that by a panel’s wattage. Use a low-wattage (150 W) and high-wattage (370 W) example to establish a range (ex: 17-42 panels to generate 11,000 kWh/year).
How many solar panels do I need for a 2000 sq ft home? On average, a 2000 sq ft home would need a 4kW system which means 10 400-watt panels.
Will a 10kW solar system run a house? Is a 10kW solar system enough to power a house? Yes, depending on where you live, a 10kW solar system would be enough to power the average home of a family of four and enough to power the average 2,000 square foot home in the United States.