Excellent question! And the answer is now findable, thanks to the EPA’s new mapping system that lets you look into your specific community to see uncover the biggest source of pollution and greenhouse gasses.
As a sample, let’s first take Washington DC, home to one-third of Team Spinach. There are three major pollution sources visible in the map (of course every single car is a source too, but we’re talking the big guns here) and predictably, two are power plants. The third is Walter Reed Medical Center. Hospitals are apparently large sources of greenhouse gasses.
Now let’s get local. Here’s my hometown of the San Fernando Valley, just north of Los Angeles. The biggest offenders are also power plants, but add to the list UCLA (universities are cesspools of energy used and wasted; many have local power plants of their own, too) and the Anheuser Busch brewery in Van Nuys, California. Beer, typical.
You might be wondering: who’s the country’s biggest emitter? As the Washington Post points out, the top two are coal power plants. Top honors go to Robert Scherer coal plant in Juliette, Georgia. In 2010 it put 22.9 million metric tons of greenhouse gases into the atmosphere.
Play around with it in your neck of the woods!