Western Massachusetts Electric Co.

Fitch Ratings has upgraded its issuer default ratings for three Eversource electric subsidiaries, citing growing strength from transmission investments, lower generation risks and expenses, and other factors.

Eversource is trying to recover additional costs stemming from its 2012 merger with NStar, but is battling Attorney General George Jepsen and Consumer Counsel Elin Swanson Katz over the state utility regulator's role in the process.

The change means Berlin electric utility Connecticut Light & Power and natural gas utility Yankee Gas will now be known as Eversource Energy as well.

The state's two largest utilities, Connecticut Light & Power and United Illuminating, rank near the bottom in the country for residential customer satisfaction, according to California firm J.D. Power & Associates.

Hartford conglomerate Northeast Utilities has entered into a contract with an Ohio software firm in order to centralize the emergency restoration process for power and natural gas outages.

Berlin electric utility Connecticut Light & Power is testing a notification system to alert impacted customers whenever an outage occurs and let them know when the lights will come back on.

Hartford and Boston-based Northeast Utilities said it has promoted three executives from its utility subsidiaries in Connecticut and Massachusetts.

Massachusetts on Tuesday levied two fines totaling $6.1 million against Northeast Utilities' two electric subsidiaries in the state over their delayed response to the storms of 2011.