In high winds, ironically, the turbines must be stopped because they are easily damaged. Build-up of dead bugs has been shown to halve the maximum power generated by a wind turbine, reducing the average power generated by 25% and more.

With the demand of all the water that would be needed for the growth of more corn, it would lead to a shortage of water for the citizens. America relies on an underground water supply, which is the same place the corn would get their water from.

There are two basic problems that arrive when thinking about solar energy that is holding it back on a large scale: the high cost of technology and energy intensity.

Biofuel is the new buzz word. A significant part of Amazon Rainforest has been cleared for the plantation of food crops. Yet, these crops are not meant for food consumption, they are new sources of fuel in energy consumption. It is true that burning biofuel for energy produces less carbon dioxide than burning coal. However, the planting of biofuel crops is far from an environmentally-friendly method. Trees are cleared to make way for crops. The former is part of the 'lungs' of our planet. Trees take in carbon dioxide and gives out oxygen. Removing trees reduces the amount of carbon dioxide taken in. It is reported that the destruction of forests and its detrimental effects on carbon dioxide absorption are a greater threat to global warming than the continuation of the use of non-renewable and pollutive energy resources. Biofuel has to be improved further. Until then, it is not a feasible alternative energy source.