Modern technology enables homes to generate, store, and manage electricity efficiently. Solar projects are making it easier for Americans to choose solar energy to power their homes. Department of. Complete Energy Independence is Achievable: Modern solar technology with 21-24% efficiency panels and advanced lithium-ion battery systems can provide 100% energy independence for most homes, even in challenging climates like Seattle where homeowners achieve 98% solar coverage. Dramatic Cost. Exploring Residential solar power systems: Discover the benefits, costs, and installation considerations for these eco-friendly energy solutions, along with insights into financing options and maximizing energy efficiency. As the cost of traditional energy sources continues to rise, many homeowners. Over 4. This number keeps growing every year. 6 kilowatt-hours (kWh) per square foot annually, though actual production varies significantly based on location, installation angle, and environmental conditions.