Toward 100% Renewable Energy

Renewable energy is energy from renewable resources that are naturally replenished on a human time-scale. It includes sunlight, wind, the movement of water, and geothermal heat. Although most renewable energy sources are sustainable, some are not. For example, some biomass sources are considered unsustainable at current rates of exploitation. Also, it is often used for electricity generation, heating and cooling. Renewable energy projects are typically large-scale, but they are also suited to rural and remote areas and developing countries, where energy is often crucial in human development. Renewable energy sources, especially solar photovoltaic and wind power, are providing an increasing share of power capacity.For 100% renewable energy usage, research into this topic is fairly new, with very few studies published before 2009, but has gained increasing attention in recent years. The majority of studies show that a global transition to 100% renewable energy across all sectors ¿ power, heat, transport and industry ¿ is feasible and economically viable.