Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Topaz Solar Farm is a proposed 550 megawat solar photovoltaic power plant, to be built by First Solar, Inc. in the Carrizo Plain, northwest of California Valley at a cost of over $1 billion. On August 14, 2008, Pacific Gas and Electric announced an agreement to buy all the power from the power plant. Commenting on this project and a nearby 250 MW project announced at the same time, Daniel Kammen, the director of the Renewable and Appropriate Energy Laboratory at University of California, Berkeley, said "This scale is ten times larger than what was being talked about awhile ago".OptiSolar, the instigator of the project, had bought 9.5 square miles of ranchland, In November 2009, First Solar announced that it had purchased options to an additional 640 acres from Ausra''s canceled Carrizo Energy Solar Farm. First Solar would reconfigure the project to minimize the use of land covered by the Williamson Act.