Knowledge Tree
Relations (1)
cross_type 2.58 — strongly supporting 2 facts
The U.S. is related to coal as it is the primary geographic region where coal usage for electricity generation has significantly declined [1], [2], leading to its replacement by other energy sources [3] and long-term projections regarding its role in the national energy mix [4].
Facts (2)
Sources
The Power of Change: Innovation for Development and Deployment ... nationalacademies.org 1 fact
measurementThe U.S. Energy Information Administration's Annual Energy Outlook 2014 'Reference Case' projects that coal, natural gas, and petroleum will supply 68 percent of total U.S. electricity generation in 2040, a figure virtually identical to the 2012 usage levels.
Sustainable Energy Transition for Renewable and Low Carbon Grid ... frontiersin.org 1 fact
referencePlumer (2021) reported on the competition between natural gas and renewable energy sources as coal usage declines in the United States.