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(Former name or former address, if changed since last report)

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Explanatory Note

On April 10, 2012, Northeast Utilities filed a Current Report on Form 8-K disclosing the completion of its previously announced merger with NSTAR.  Pursuant to the terms and conditions of an Agreement and Plan of Merger, dated as of October 16, 2010, as amended as of November 1, 2010 and December 16, 2010, by and among Northeast Utilities, NSTAR, NU Holding Energy 1 LLC, a wholly owned subsidiary of Northeast Utilities, and NU Holding Energy 2 LLC, a wholly owned subsidiary of Northeast Utilities, NU Holding Energy 1 LLC was merged with and into NSTAR, after which NSTAR was merged with and into NU Holding Energy 2 LLC with NU Holding Energy 2 LLC remaining a wholly owned subsidiary of Northeast Utilities (the “Merger”). In connection with the Merger, the name of NU Holding Energy 2 LLC was changed to NSTAR LLC.

This Form 8-K/A amends the original Form 8-K to include the financial statements of NSTAR and pro forma financial information required by Items 9.01(a) and 9.01(b) of Form 8-K, respectively, and to include the exhibits required under Item 9.01(d) of Form 8-K.

Section 9

Financial Statements and Exhibits

Item 9.01

Financial Statements and Exhibits.

(a)

Financial Statements of Business Acquired.

The historical audited consolidated financial statements of NSTAR as of December 31, 2011 and 2010, and for each of the three years in the period ended December 31, 2011, are attached as Exhibit 99.1 to this Current Report on Form 8-K/A and are incorporated herein by reference.

(b)

Pro Forma Financial Information.

The unaudited pro forma condensed combined consolidated financial statements of Northeast Utilities as of and for the year ended December 31, 2011, are attached as Exhibit 99.2 to this Current Report on Form 8-K/A and are incorporated herein by reference.

(d)

Exhibits.

Exhibit Number	Description of Exhibit
23.1	Consent of PricewaterhouseCoopers LLP.
99.1	Audited consolidated financial statements of NSTAR as of December 31, 2011 and 2010, and for each of the three years in the period ended December 31, 2011.
99.2	Unaudited pro forma condensed combined consolidated financial statements of Northeast Utilities as of and for the year ended December 31, 2011.

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SIGNATURE

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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EXHIBIT INDEX

Exhibit Number	Description of Exhibit
23.1	Consent of PricewaterhouseCoopers LLP.
99.1	Audited consolidated financial statements of NSTAR as of December 31, 2011 and 2010, and for each of the three years in the period ended December 31, 2011.
99.2	Unaudited pro forma condensed combined consolidated financial statements of Northeast Utilities as of and for the year ended December 31, 2011.