Hydrogen: Need, production techniques and economics

The emission of greenhouse gases like Carbon dioxide, methane from fossil fuel is the major concern of climate change. Climate change threatens the basic elements of life for people around the world - access to water, food production, health, and use of land and the environment. To mitigate the emission of greenhouse gases produced from various sector like power, industries, transport, building and land we have to rely on clean fuel like hydrogen instead of conventional fossil fuel. Hydrogen is abundantly available in universe in sun, infect the energy stored in fossil fuel or wind energy is product of fusion of hydrogen to helium taking place in sun. Since hydrogen is not available in pure form, but found in compound of oxygen or carbon we have to produce it in industry. Hydrogen if produced from natural resources like splitting of water by solar energy can provide greener and cleaner tomorrow. However economy of hydrogen production is also major concern. Environment concern and cost of production of hydrogen, its storage and transport are the major constraint for adopting the hydrogen production techniques.