Tech journal the Register reports that California has commissioned a 300 MW solar plant.
http://www.theregister.co.uk/2007/11/03/california_300_megawatt_soloar_facility/
Solar power is one of the most obvious solutions to growing power demands in many of the developing countries who will need more power in the coming years to support their development. It's easy to deploy in a decentralised form and has a very small environmental footprint.
It's also of course a great source of energy for places like California and recent research by scientists from the German Space Agency into the feasibility of DC (Direct Current) lines for power distribution even suggested that CSP plants could be rolled out in a Euro-African network bringing power from the African Sun to homes in Northern Europe.