Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-126822 on Form S-3 of our report dated February 28, 2011, relating to the financial statements and financial statement schedule of South Jersey Gas Company,appearing in this Annual Report on Form 10-K of South Jersey Gas Company for the year ended December 31, 2010.

/s/ Deloitte & Touche LLP

Philadelphia, Pennsylvania

February 28, 2011