It is pertinent to note that the place of energy in the global system cannot be over-emphasized. Presently, the source of globally energy dependence has contributed massive to environmental degradation and other negative effects including climate change, depletion of ozone layer, oil spillage, and acid rain.
We cannot however continue to depend fully on energy sources that do not support the ecosystem. Therefore, the need to develop alternative energy sources which supports the environment with sustainable options. Already we have sources like solar and wind-mill which if utilized would significantly reduce the level of environmental impact we currently face.
Currently, one major challenge with renewable energy is building its supply capacity to support heavy industrial and manufacturing sectors; that is for developed countries. Developing countries still has a very farther miles to trek.