Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated February 26, 2010, relating to the consolidated financial statements and the related consolidated financial statement schedules, and the effectiveness of internal control over financial reporting of Northeast Utilities and subsidiaries appearing in the Combined Annual Report on Form 10-K of Northeast Utilities for the year ended December 31, 2009.
We consent to the incorporation by reference in this Registration Statement of our reports dated February 26, 2010, relating to the consolidated financial statements and the related consolidated financial statement schedules, and the effectiveness of internal control over financial reporting of The Connecticut Light and Power Company and subsidiaries, Public Service Company of New Hampshire and subsidiaries, and Western Massachusetts Electric Company and subsidiary appearing in the Combined Annual Report on Form 10-K of Northeast Utilities for the year ended December 31, 2009.
We also consent to the reference to us under the heading “Experts” in this Registration Statement.
/s/ Deloitte & Touche LLP
Hartford, Connecticut
March 19, 2010