Renewable sources of energy are those sources that can be replenished. Making a transition towards more renewable forms of energy would result in independency from local sources of energy and a more decentralized production of energy that is less vulnerable to supply cutoffs. Solar energy can be harnessed by concentrating solar power (CSP) or photovoltaic (PV) technology. The economic potential in industrialized countries, and the shift towards more renewables-intensive industry in both the US and China, is an optimistic sign for solar energy.
Sustainable development is a hot topic in the world of politics today. The reason why it has attracted so much attention signifies a looming crisis and the repercussions it would have on people and the environment both. Numerous summits and conferences have been conducted and hundreds of organizations all over the world have met and discussed solutions to the predicament the world faces if it continues to use its energy sources the way it is doing now. The contours of the reason for taking such steps are worth pointing out. The population of the world is increasing at a rapid rate and has tripled over the past seven decades. It had reached an alarming figure of 6 billion at turn of the twentieth century. The rapid increase in the population does not come without its share of problems. Mankind is plunged into a yet deeper abyss of poverty, scarcity of resources and shortage of non-renewable energy reserves. Stocks of resources are being depleted swiftly.
Where people in many developed countries have taken energy for granted, the developing countries are facing the brunt of the global energy crisis. The environment is deteriorating due to deforestation, increase in the greenhouse gases, extinction of species and climate changes. Increasing population has caused a dearth of food in many poor countries, where thousands do not have access to clean drinking water and are suffering from