1100 LOUISIANA SUITE 3800 HOUSTON, TEXAS 77002-5218 fAX (713) 651-0849 TELEPHONE (713) 651-9191 EXHIBIT 23.C CONSENT OF RYDER SCOTT COMPANY, L.P. As independent petroleum engineers, Ryder Scott Company, L.P. hereby consents to the incorporation by reference in the Registration Statements on Form S-3 (File Nos. 333-127797 and 333-134406) and Form S-8 (File Nos. 333-127951, 333-126599, 333-126597, 333-96959, 333-26813,333-26831,333-26823,033-46519, 033-49956, 033-51851, 033-57553, 03351853, 333-75781, 333-78949, 333-78951, 333-78979, 333-94717, 333-94719, 333-64240, 333-31060) of EI Paso Corporation of the reference to us and our reports under the captions “Part I. Business - Exploration and Production Segment — Natural Gas and Oil Properties” and “Part II. Item 8. Financial Statements and Supplementary Data — Notes to Consolidated Financial Statements - Supplemental Natural Gas and Oil Operations (Unaudited)” and our reserve reports attached as Exhibits 99.A and Exhibits 99.B in the Annual Report on Form 10K of EI Paso Corporation for the year ended December 31, 2007. RYDER SCOTT COMPANY, L.P. Houston, Texas February 25, 2008 1200. 530 - 8TH AVENUE. S.W. 621 17TH STAEET. SUITE 1550 CALGAAY. AlBEATA T2P 358 DENVEA. COLOAADO 80293-1501 Tel (403) 262-2799 TEL (303) 623-9147 fAX (403) 262-2790 fAX (303)623-4258