Investor Presentaiton

* The Mexican Energy Infrastructure Opportunity is Developing (1) Ehrenberg Los Algodones San Luis Rio Colorado 2 Natural Gas Pipelines Constructed by MasTec Up to $30 Billion for 12,000 miles of pipeline opportunities are planned by Pemex and Comisión Federal de Electricidad (CFE). (2) Sasabe La Paz By 2028, the demand for natural gas is expected to about double to 7.7 Bcf/d as Mexico is projected to add 34.6 gigawatts of new natural gas fired electric generation capacity. (2) Experts predict a 75% increase in demand for natural gas over the next 15 years as Mexico continues growing and the country switches to natural gas-fired power generation. (3) Topoloba Los Cabos Waha Samalayuda Облада El Encino Durango Colombia La Laguna Escobedo Ramones Sur de Texas LNG regasification terminals Gas pipelines in operation Gas pipelines sponsored by CFE Gas pipelines sponsored by PGPB Gas pipelines jointly sponsored by CFE/PGPB Proposed natural gas liquefaction/compression plant Proposed natural gas regasification/ decompression plant Maritime natural gas supply route Compression station Aguascalientes V. Reyes Naranjos Tuxpan Guadalajara Tula Sources: (1) Map Data from SENER Cempoala Jáltipan Salina Cruz Tapachula Mérida Cancún (2) Pipeline and Gas Journal, January 2016, BTU Analytics, August 2015 (3) Pipeline and Gas Journal, January 2017 31

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