It blows me away how much of the United State's power is still produced from coal; coal just seems so 19th century.

From the EIA:
Coal 39%
Natural Gas 27%
Nuclear 19%
Hydropower 7%
Other Renewable 6%
Biomass 1.48%
Geothermal 0.41%
Solar 0.23%
Wind 4.13%
Petroleum 1%
Other Gases < 1%

California is doing much better than most of the U.S., relying 8% on coal, and expected to drop to 4.7% by 2022.