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flag A California home, using solar panels and smart design, saves $4,800 yearly and pays for itself in four years.

flag Robert Fortunato’s 1959 home in Hermosa Beach, Calif., has been a net-zero energy, zero-carbon residence for over a decade, producing more power than it consumes. flag Using standard materials and off-the-shelf technology, including 26 solar panels and an electric-only system, the 2,150-square-foot home eliminates gas and electric bills, saving about $4,800 annually. flag A five-foot roof overhang, inspired by Native American cliff dwellings, reduces heating and cooling needs by 60% by blocking summer sun and allowing winter warmth. flag The $18,000 solar investment paid for itself in four years. flag The project, completed for less than a traditional remodel, shows that sustainable, affordable home upgrades are achievable with thoughtful design and planning.

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