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ALFA continued to invest in improving its energy efficiency and reducing CO2 emissions. At the end of 2014 it started up operation of a cogeneration plant in Veracruz, with the capacity to generate 90 MW. It also worked on enhancing the capacity of the Alestra cogeneration plant in Querétaro. By operating with natural gas, these plants avoid the emission of more than 170,000 metric tons of CO2 per year. In 2015, 96% of the energy used by ALFA came from natural gas, the cleanest fuel available today.

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Sigma Mexico has succeeded in recycling or re-using 95% of the waste generated in its operating processes, so that it not waste does not end up in sanitary landfills. At DAK Americas, the waste reduction program manages more than 200 kinds of waste through recycling processes, composting or energy conversion. This has reduced the amount of waste sent to sanitary landfills by 97%.

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ALFA has two important recycling programs, one for aluminum and another for PET. 75% of the aluminum consumed by Nemak comes from recycled sources. Regarding PET, Alpek has two recycling plants, one in the U.S. and the other in Argentina. Together they processed 53,777 metric tons of bottles this year. Apart from avoiding having to dispose of these bottles, recycling them helps to reduce energy consumption and CO2 emissions.