Solar-panel installers spend a lot of time on roofs. They're part carpenter, part electrician. They roll up to a jobsite for the few days it takes to properly install a solar system and angle and position the panels in the right place, connecting them into the building's power lines. It's hands-on work that's good for anyone wanting a tan on the back of his or her neck. There's been a lot of talk of upgrading our nation's energy grid and generation system. It's a good bet that solar installers will be one of the more stable jobs as we climb out of this economic hole.