Warren Buffett’s MidAmerican Energy Holdings agreed to buy a 49 percent stake in NRG Energy Inc. (NRG)’s $1.8 billion Agua Caliente solar project, the billionaire’s second investment in solar this month.

The 290-megawatt power plant is being built in Arizona by First Solar Inc. (FSLR), which expects to complete the installation of its panels by 2014, Princeton, New Jersey-based NRG said today in a statement. Terms of MidAmerican’s purchase weren’t disclosed.

Buffett’s foray into solar shows that utility-scale power plants offer good returns with little downside risk, said Paul Clegg, an analyst at Mizuho Securities USA in New York. Power from the plant, which won a $967 million loan guarantee from the U.S. Energy Department this year, will be sold to a PG&E Corp. utility under a 25-year contract at undisclosed prices.

Full Article: http://www.bloomberg.com/news/2011-12-16/berkshire-invests-in-1-8-billion-nrg-project-as-buffett-adds-to-solar-bet.html