Doug Oakley/Staff

Nicholas Davis, 11, kneeling at right, watches one of his solar cars in a race as other Rosa Parks Elementary School students cheer during a solar science fair at the school on June 3. The solar fair was held to celebrate the school's new $325,000 solar panels that should save it at least $50,000 a year in electric bills.

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Nicholas Davis, 11, kneeling at right, watches one of his solar cars in a race as other Rosa Parks Elementary School students cheer during a solar science
Nicholas Davis, 11, kneeling at right, watches one of his solar cars in a race as other Rosa Parks Elementary School students cheer during a solar science fair at the school on Monday June 3, 2013. The solar fair was held to celebrate the school's new $325,000 solar panels that should save it at least $50,000 a year in electric bills. (Doug Oakley/Bay Area News Group)