Other competitors in the utilities sector include: NSTAR (NST), UIL Holdings (UIL), and Unitil Corporation (UTL).

FORBES: Earnings Preview: Northeast Utilities System

NStar said in many areas it was too dangerous to send in crews.

WSJ: A state-by-state look at the Northeast snowstorm

The financial district of Boston did not lose power, according to NSTAR, the independent power producer that supplies electricity to downtown Boston.

FORBES: Boston's Logan Airport Expects Major Delays Monday

Many areas were too dangerous to send in crews, utility NStar said.

WSJ: A state-by-state look at the Northeast snowstorm

It is likely to take several days to restore power to all 250, 000 of its customers affected by outages along the Massachusetts coast, utility NStar said.

WSJ: Storm Sweeps Through Northeast U.S.

Impassable roads meant that the company didn't expect to be able to send out enough crews to assess damage and start repairs until Sunday morning, said NStar spokesman Michael Durand.

WSJ: Storm Sweeps Through Northeast U.S.