Investor Relations Bruce Connery VP, Investor Relations 713.420.5855 WIC Expansion to Serve Rockies Supply CIG Facility Moving Gas to Market SNG Expansion to Serve Southeast Power Generation Elba Island LNG — A Strategically Located Regasification Terminal LISTED Elba Express — Built to Serve the Southeast and Beyond A Unique Combination of Stability and Growth With strong sponsorship from general partner El Paso Corporation, the premier U.S. interstate natural gas pipeline company, El Paso Pipeline Partners (NYSE: EPB) offers a unique combination of stable cash flow and outstanding growth opportunities. More than 90 percent of the partnership’s revenues come from capacity reservation charges under longterm contracts. El Paso Pipeline Partners’ assets are located in the Rockies and Southeastern regions, and are well positioned for future growth opportunities. Big Horn Basin Wyoming Interstate Gas (WIC) Powder River Basin WIC System Expansion Green River Basin Colorado Interstate Gas (CIG) Uinta Basin Elba Express Denver Basin Piceance Basin Southern Natural Gas (SNG) Piceance Lateral Expansion Southern LNG (SLNG) El Paso Corporation Raton Basin Rockies - Significant new supply area WIC - Low cost Rockies takeaway pipeline CIG - Leading Rockies interstate system Transmission System WIC Ownership Interest (%)1 Miles of Pipeline Design Capacity (MMcf/d) Storage Capacity (Bcf) 100 800 3,340 --- 58 4,200 3,750 35 SNG 45 7,600 3,700 60 SLNG3 51 N/A 1,7554 11.5 Elba Exp.3 51 190 945 N/A CIG 2 As of June 30, 2010 2 As of June 30, 2010. Volumes reflected are 100 percent of the volumes transported on the CIG system and SNG system, respectively, and storage capacity includes Bear Creek Storage, in which SNG owns a 50 percent interest. 3 In March 2010, EPB completed its acquisition of 51 percent interests in Southern LNG and Elba Express pipeline. 4 Peak vaporization send out capacity 1 Southeast Supply Header South System III Expansion Gulf of Mexico Production Florida Market Southeast - Fastest growing natural gas demand market in U.S. SNG - Franchise system, positioned for growth SLNG - Strategically located LNG terminal Elba Express - New pipeline serving growing markets Combining stability with growth. El Paso Pipeline Partners. www.eppipelinepartners.com Investor Relations Bruce Connery VP, Investor Relations 713.420.5855 LISTED Analyst List Strong Sponsorship Stable Cash Flow - 90%+ of revenue from capacity reservation charges - Supported by long-term contracts - Strategic growth vehicle for El Paso - Well located, high-quality assets - Significant contracted organic growth projects - Growth through potential acquisitions - El Paso and/or third party Growth Vehicle Financial Flexibility 1 - El Paso Corporation is the premier U.S. natural gas pipeline company - Alignment of interests (57%1 LP & 2% GP ownership + incentive distribution rights) Barclays Richard Gross Citigroup John Tysseland Goldman Sachs & Co. Michael Cerasoli Ladenberg Thalmann Edvardo Seda Merrill Lynch/BOA Gabe Moreen Morgan Stanley Stephen Maresca Raymond James Darren Horowitz Stifel Nicolaus Selman Akyol UBS Ron Barone Wells Fargo Michael Blum - Solid credit profile - Strong and flexible financial position as of June 30, 2010 Total Assets* ($ billions) Consistent Cash Distribution Growth ($/unit) 4.2 2.7 1.4 $0.2875 $0.295 $0.30 $0.32 $0.325 $0.33 4Q08 1Q09 2Q09 $0.35 $0.36 3Q09 4Q09 $0.38 $0.40 0.9 12/31/07 12/31/08 12/31/09 6/30/10 *as orignially reported 1Q08 2Q08 3Q08 Note: EPB completed its inital public offering in November, 2007. Committed Major Expansion Projects 2010 2011 & Beyond Wyoming Interstate Company System Expansion System Expansion Colorado Interstate Gas Raton Basin Southern Natural Gas South System III SESH II South System II SESH II Southern LNG Company Elba IIIA Elba IIIB1 Elba Express Elba Express A Elba Express B 100% Share growth capital ($ MM) $400 $474 EPB consolidated ($ MM) $214 $281 EPB pro rata2 ($ MM) $213 $243 Project is at the option of BG $ amount represents costs net to EPB on a pro rata basis (100% of WIC, 58% of CIG, 51% of Southern LNG, 51% of Elba Express, and 25% of SNG), 1H 2010 and 45% of SNG 2H 2010 and beyond shown in the period of expenditure Note: As of 8/4/2010 1 2 Wyoming Interstate 1Q10 2Q10