Wal-Mart's Mexican division has announced plans to use wind-powered energy for its self-service stores.

Working with the Oaxaca I Lamatalaventosa Wind Farm, Walmart de Mexico y Centroamerica will use 27 2.5MW turbines - double the existing capacity.

"The Oaxaca I Lamatalaventosa Wind Farm is one of the projects that will enable Walmart de Mexico y Centroamerica to meet its objective of having 100% of its units operate with renewable energy sources by 2025," said Walmart Mexico president and CEO Scot Rank.

"It should be noted that this farm supplies wind energy to more points throughout our country than any other of its kind, providing environmental benefits such as reducing CO2 emissions into the atmosphere by 137,000 tons, which in turn is tantamount to taking 21,000 vehicles off the roads."

Walmart says the initiative is part of its sustainability commitment including generating zero pollutant water discharge by reducing, reusing, and recycling waste and packaging, as well as expanding the assortment of environment-friendly items.