The Northern Pass proposes to bring 1200MW of electricity into New Hampshire.
While that may be true, the REAL question is: “Where would it go from there?”
The graphics below show comparisons of electricity consumption vs electricity generation in Massachusetts, Connecticut, and New Hampshire. Currently, Massachusetts and Connecticut are forced to import electricity because they consume more electricity than they generate. Meanwhile (luckily for Massachusetts and Connecticut), NH is generating more electricity than it consumes and exports electricity.
What would happen when you bring more electricity into a state that is already exporting electricity?
That state simply exports more electricity. Of course.
Massachusetts and Connecticut would get the electricity.
New Hampshire would get the towers.
(Click on the images below for details)