Peoples Gas Light & Coke 10-Q 2006 Q2 Quarterly report

Exhibit 32(b)

PEOPLES ENERGY CORPORATION AND CONSOLIDATED AFFILIATES

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the combined Quarterly Report of Peoples Energy Corporation (the “Company”), The Peoples Gas Light and Coke Company (“Peoples Gas”) and North Shore Gas Company (“North Shore Gas") on Form 10-Q for the period ending March 31, 2006 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Thomas A. Nardi, Executive Vice President and Chief Financial Officer of the Company, Peoples Gas and North Shore Gas, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that:

(1)   The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)   The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company, Peoples Gas and North Shore Gas.

/s/ THOMAS A. NARDI	May 10, 2006
	Date

Thomas A. Nardi

Executive Vice President

and Chief Financial Officer of

Peoples Energy Corporation

/s/ THOMAS A. NARDI	May 10, 2006
	Date

Thomas A. Nardi

Executive Vice President

and Chief Financial Officer of

The Peoples Gas Light and Coke Company

/s/ THOMAS A. NARDI	May 10, 2006
	Date

Thomas A. Nardi

Executive Vice President

and Chief Financial Officer of

North Shore Gas Company