It's in the teens outside with an arctic blast of wind. The tree branches are waving and the house is rattling, but it's nice and toasty inside. The sun has been shining all day, which means the solar panels have been cranking. They'll be shutting off momentarily, but for now I'm enjoying the 70 degrees they've blessed me with. My solar panels have the power to improve any winter day just by turning on the heat.