Construction has officially begun on the world's largest solar project. The 579-megawatt project is a joint venture between Warren Buffett's Berkshire Hathaway (BRK.A 0.61%) subsidiary MidAmerican Energy and SunPower (SPWR 7.73%). In this video, Fool.com contributor Aimee Duffy breaks down the stats on the new facility, and compares it to the world's current leading solar plant in the United Arab Emirates.