In the U.S., about 60% of the electrical energy is produced from coal, 15% form hydroelectric sources, 15% from nuclear, and 10% from oil or natural gas.
(about 60% of the electrical energy; is produced; from coal, 15% form hydroelectric sources, 15% from nuclear, and 10% from oil or natural gas; L:In the U.S.)
about 60% of the electrical energy
is produced
from coal, 15% form hydroelectric sources, 15% from nuclear, and 10% from oil or natural gas L:In the U.S.