The place where photovoltaic panels collect solar panels
4 · South-facing panels give you the most bang for your buck because the sun crosses the sky in the south, giving the panels more sunlight. "We tell people that a solar panel costs the same amount regardless of what orientation it gets installed in," says Aaron Nitzkin, executive vice president of solar at Citadel Roofing and Solar in California (another EnergySage Elite installer).