Attached files
Exhibit
23.A
CONSENT
OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the
incorporation by reference in the Registration Statement (Form S-3 No.
333-158205), and in the related Prospectus of El Paso Corporation, Colorado
Interstate Gas Company, Colorado Interstate Issuing Corporation, El Paso Natural
Gas Company, Southern Natural Gas Company, Southern Natural Issuing Corporation,
and Tennessee Gas Pipeline Company, of our report dated February 26, 2010,
with respect to the consolidated financial statements and schedule of Southern
Natural Gas Company, included in this Annual Report (Form 10-K) for the year
ended December 31, 2009.
/s/ Ernst & Young
LLP
Houston,
Texas
February 26,
2010