Chicago, IL-Based Exelon Generated 4Q 2017 Net Income of $1.937 Bil, Up By a Truly Off-the-Charts 684% or Up By $1.690 Bil From Its 4Q 2016 Net Income of $0.247 Bil ...................................................................................... How Does Exelon's 4Q 2017 Bottom Line Earnings Increase of 684% Compare With the % Increase in Your January 2017 Monthly Bill Over That of January 2016? ..... Ours More Than Doubled