[kabar]

The Mojave Solar Project is a solar thermal power facility under construction in the Mojave Desert in California, which is located 100 miles northeast of Los Angeles near Barstow. The 280 MW concentrating solar power (CSP) plant will cost an estimated $1.6 billion and should be completed in 2014. Abengoa has successfully secured a $1.2 billion loan guarantee from the US government for the project

[DB]

That appears to be about a 3% return on investment at $0.10 per kWh not including inflation or maintenance.