CNBC – A number of factors influenced Mexico’s slow but steady rise as a manufacturing hub for multinational corporations, including NAFTA, other trade agreements, cheap labor costs and proximity to the United States. But observers point to another recent development that they see accelerating investment in Mexico and boosting economic productivity: Electricity is getting cheaper.

http://www.cnbc.com/2015/08/10/mexicos-falling-electricity-rates-draw-manufacturers.html