Warren Buffett made an even bigger splash in renewables in December.
His MidAmerican Solar paid $2 billion to $2.5 billion for the 579-megawatt Antelope Valley Solar Projects from SunPower Corp., the largest photovoltaic project in the world.
GoGreenSolar says Buffett's project will be huge.
"To give you an idea of how massive this project is, a solar panel used in residential applications might be around 230 Watts. That would mean more than 2,500,000 230 Watt solar panels," writes the blog.
Buffett also put money into wind. MidAmerican Wind completed installation of the 300MW Pinyon Pines I and II California project consisting of 100 3MW turbines supplied by Danish manufacturer Vestas.