![]() In 2021, China accounted for almost half of the global increase in renewable electricity. There are 3,146 gigawatts installed in 135 countries, while 156 countries have laws regulating the renewable energy sector. Biomass and geothermal energy grew from 2% to 3%. The share of hydropower decreased from 16% to 15% while power from sun and wind increased from 2% to 10%. Use of fossil energy shrank from 68% to 62%, and nuclear from 12% to 10%. From 2011 to 2021, renewable energy grew from 20% to 28% of global electricity supply. Renewable energy is often deployed together with further electrification, which has several benefits: electricity can move heat or objects efficiently, and is clean at the point of consumption. 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 is often used for electricity generation, heating and cooling. For example, some biomass sources are considered unsustainable at current rates of exploitation. Although most renewable energy sources are sustainable, some are not. Renewable resources include sunlight, wind, the movement of water, and geothermal heat. Renewable energy is energy from renewable resources that are naturally replenished on a human timescale. Renewable energy sources, especially solar photovoltaic and wind, are providing an increasing share of electricity production. For the journal, see Renewable Energy (journal).
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