A new solar-powered billboard may be a sign outdoor marketing is going green. According to the San Francisco Sentinel, Pacific Gas and Electric Company unveiled the country's first solar-powered billboard in San Francisco today. The system can deliver about 3.4 kilowatts of renewable solar energy to PG&E customers. The billboard includes 20 solar modules that are interconnected to the grid. In addition, PG&E installed energy-efficient LED lights in place of the billboard's Holophane light fixtures. The billboard is part of the company's new "We Can Do This" ad campaign, and features programs and services reinforcing PG&E's commitment to the environment.