Research analyses of Electricity Costs in Central and South America

I am looking for reliable data of: (1) Energy consumption of the Industrial / Commercial sector of the last 3 years for countries 16 countries listed below. (2) Prices in US dollars of Kwh for the Industrial / Commercial sector of the last 3 years for the 16 countries listed below. (3) Prices in US dollars of Kwh for the Industrial / Commercial sector of the last 3 years for the top 3 cities of the 16 countries listed below. Central America (6 countries): Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama, South America (10 countries): Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Paraguay, Peru, uruguay, Venezuela. The deliverable can be 3 excel files. I need this by 7/22/2011.
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