This interactive data visualization tool was very fun to explore. There was a lot of really good information all packed neatly into a tight and organized visualization. It was also a really good tool to compare energy sources from different areas.
California is very anti-coal use and this graph really shows it. It gets more interesting to me when you can see the coal use in other stats such as OH, MD, WV, Pa regions.

Using those same comparisons, it is also interesting to see how much more oil California uses than Md, OH, PA, WV region.