California is known for being a leader in solar energy, but a small county in Northern California has taken things a step further. It has become the first county government in the state to not only zero-out its electric bill with renewable energy, but also to become grid positive. Yolo County (population 200,000), just west of Sacramento County, now produces 152 percent more energy from solar panels than it uses…. Working with SunPower, Yolo County installed a 1-megawatt solar power system at the Yolo County Justice Campus in the county seat, Woodland. Yolo County owns the system and associated renewable energy credits, and financed the purchase using multiple funding sources, including a $2.5 million loan from the California Energy Commission, and clean renewable energy bonds and qualified energy conservation bonds available through the American Recovery and Reinvestment Act of 2009. The system produced $162,000 the first year of operation, and is predicted to earn the county $10 million over the first 25 years….