Economic Times: A California utility company has signed a deal to build the world’s two biggest solar power plants in central California with solar panels covering 32.5 sq km and producing 800 MW of electricity. Pacific Gas & Electric will use the massive solar facilities to help it meet state requirements to generate 20 percent of its electricity from renewable sources by 2010, according to the deal announced on Friday. The company has signed a contract with two Silicon Valley firms to build …