National Geographic - USA (2020-04)

(Antfer) #1

The furnaces at SSAB
America’s steel mill in
Montpelier, Iowa, are
electric—and by 2022,
the company says,
they’ll be heated by
renewable energy. The
iron and steel indus-
try, which usually relies
on coal, accounts for
about 7 percent of
global CO 2 emissions.
Heavy industry is espe-
cially hard to wean off
the cheap heat that
fossil fuels provide.

Free download pdf