Free calculators and monitoring guides to estimate cost, panel count, and battery backup needs.
Most U.S. homes land between about 5 and 12 kW, but your bill, roof, climate production, and utility export rules decide the right size. Here is a kW-first method that beats square-footage guesses.
Panel count comes from yearly kWh, local production, and panel wattage. Many homes land roughly in the mid-teens to high-twenties of modules—small…
Size storage from critical loads: watts × hours of backup, convert to kWh, then add a real-world buffer for inverter losses and usable capacity limits.…
Use this solar cost calculator framework to estimate system price, tax credit impact, and monthly bill savings for a typical U.S. home.