Because coal is the largest source of low cost electricity, coal remains a dominant and growing fuel for electric generation, with the use of coal increasing by almost 400 million tons per year during that time.
(coal; is; the largest source of low cost electricity) (coal; remains; a dominant and growing fuel for electric generation) (the use of coal; increasing; by almost 400 million tons per year; T:during that time)
coal coal the use of coal
is remains increasing
the largest source of low cost electricity
a dominant and growing fuel for electric generation
by almost 400 million tons per year T:during that time