Complex sentence: According to the Energy Information Administration (EIA), coal in 2015 in the United States produced 1,364,000,000 metric tons of amounted to 71% of emissions from the electric power sector.
Split into simpler sentences: According to the Energy Information Administration (EIA), coal in 2015 in the United States produced 1,364,000,000 metric tons of. This amounted to 71% of emissions from the electric power sector.