Renewable Energy technologies based on the inexhaustible resources of sunlight, wind, water and biomass are considered to offer sustainable energy alternatives to a world beset by serious environmental problems and volatile fossil fuel politics. Despite the somewhat checkered progress of renewable in the last four decades, they continue to hold a prominent place in various national and international agendas, including the global climate change negotiation processes, as choices that could lead the world towards sustainable development.
Throughout human civilization, energy has been one of the prime movers of economic development. An increasing share of global energy needs is expected to be met through renewable in the years ahead. International estimates suggest that renewable would contribute about one-quarter to one-half of the world’s primary energy supply by 2050; and by that year, two of the world’s largest petroleum companies expect renewable to account for over 50% of their turnover.
Renewable have enormous potential to meet the growing energy requirements of the increasing population of the developing world, while offering sustainable solutions to the global threats of climate change.