NSTAR (NYSE:NST) announced today that it is holding a conference call to discuss its fourth quarter and full year 2011 financial results. The conference call will be held on Friday, January 27, 2012 at 9:00 a.m. (Eastern Time). Earnings information will be released after market hours on Thursday, January 26, 2012.

The call is being webcast and can be accessed on NSTAR's corporate website - www.nstar.com - by selecting "Investor Relations" then "Webcast." A replay of the call will be archived on NSTAR's website in the Investor Relations section under "Financial Information" and then "Webcast Archives."

Profile

NSTAR, headquartered in Boston, is an energy delivery company with revenues of approximately $3 billion and assets of $8 billion that serves 1.4 million customers in Massachusetts, including approximately 1.1 million electric distribution customers in 81 communities and 300,000 natural gas distribution customers in 51 communities.

On October 18, 2010, NSTAR announced a stock-for-stock merger-of-equals transaction with Northeast Utilities. The merger transaction has not yet been approved by state regulators. For more information, go to www.nstar.com.

NSTAR
John Moreira or John Gavin, 781-441-8338