Apple makes much ado about using clean energy sources to power its buildings these days, and it just put its money where its mouth is... a lot of money. The company is investing a whopping $848 million in a First Solar plant in California's Monterey County that, according to Apple chief Tim Cook, should generate enough electricity to power 60,000 homes. Apple will get a 130-megawatt supply from the solar farm to light up buildings such as its future spaceship-like campus, while the remaining 150 megawatts will go to Pacific Gas & Energy's grid. Reportedly, this is the largest commercial deal to date in the solar industry -- it certainly eclipses many of the other green energy initiatives we've seen in tech, which tend to "only" require tens of megawatts.