Powering a typical 2000-square-foot home efficiently generally requires a solar array consisting of 18 to 25 high-efficiency photovoltaic panels (translating to a roughly 7kW to 10kW system) paired with a 10kWh to 15kWh battery storage bank. Exact sizing depends heavily on regional climate conditions, daily electricity consumption habits, HVAC loads, and whether the household relies on natural gas or heavy electric appliances for heating and cooking.