Clean Energy Production: Global warming is still a hot topic and any means to ward off the evils of global warming is surely welcome. One such solution for green countries is- shifting dependency to clean energy sources. Clean power is non-carbohydrate energy that does not produce carbon dioxide when generated. In a general sense this alternative energy or clean energy is that which is produced without the undesirable consequences of the burning of fossil fuels and any means that reduces global warming or dependence on foreign energy. It includes hydropower, nuclear, geothermal and solar power among others. Here is a list of countries that produce the highest clean energy, ranked by percentage of overall energy production via clean sources. Source: World Bank statistics.