Definition of gigawatt in US English:


(also GW)


  • A unit of electric power equal to one billion (10⁹) watts.

    • ‘If the best existing dams were upgraded to generate electricity they could generate 17 gigawatts of power.’
    • ‘Producing this would require 400 gigawatts of continuously available electrical power - which is almost double our present capacity.’
    • ‘Collectively, these engines are now generating a total of about 11 gigawatts of shaft power.’
    • ‘Today, present installed U.S. electrical capacity is at 600 gigawatts of power.’
    • ‘It is installing 150 gigawatts of electricity generating capacity, double the UK's total capacity.’