It's true
It covers U.S. and Great Britain (England), but Con Ed covers only U.S.
I hate ConEd!
COn ed located in tri state region whereas National Grid is in multiple states and countries
Serves upstate NY which is larger area
National Grid owns Niagara Mohawk in New York State , which alone covers a larger area
National Grid is based out of the UK and has subsidiaries throughout the U.S. Therefore NG covers more ground than Con Ed which is domestic energy provider.
