5 p.m. update: Several hundred South End residents still remain without power. NSTAR says power will be restored to them by 6 p.m.
12:45 p.m update:
Most of those without power have had it restored, according to the city of Boston, although some residents are still without power.
More than 900 residents of the South End were suddenly left without power on the morning and early afternoon of New Year's Eve.
NSTAR and the City of Boston reported a power outage in the South End at approximately 9:45 a.m. on Dec. 31 of approximately 963 customers, concentrated in the Concord Square area of the South End.
The outage was caused by an underground equipment failure in the area of West Newman Street and Rutland Street, according to NSTAR spokesperson Michael Durand.
"The number of customers affected is now approximately 600, and we expect full restoration by mid-afternoon," he said in an email at 11 a.m.
The City of Boston and NSTAR said power would be restored in the area by 2 p.m. on Monday.
You can monitor the number of those without power through NSTAR's outage map.