EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-106330, 333-39738, 333-66426, and 333-120100 on Form S-8 and Registration No. 333-155677 on Form S-3 of our report dated February 25, 2011, relating to the consolidated financial statements and consolidated financial statement schedule of Public Service Enterprise Group Incorporated and subsidiaries and our report dated February 25, 2011, relating to the effectiveness of the Company’s internal control over financial reporting, appearing in this Annual Report on Form 10-K of Public Service Enterprise Group Incorporated for the year ended December 31, 2010.

/s/ Deloitte & Touche LLP

Parsippany, New Jersey

February 25, 2011