Social Sciences, asked by pragati81, 1 year ago

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Answered by puneet8383
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Explanation:

2016 World [civil] power generation by source [IEA, 2018] (Percentages of 24.973 TWh)[1]

Coal (38.4%)

Natural Gas (23.2%)

Hydro (16.3%)

Nuclear fission (10.4%)

Oil (3.7%)

Non hydro renew. (8%)

Wind, solar, and hydroelectricity are three renewable sources of energy.[2]

Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.[3] Renewable energy often provides energy in four important areas: electricity generation, air and water heating/cooling, transportation, and rural (off-grid) energy services.[4]

Based on REN21's 2017 report, renewables contributed 19.3% to humans' global energy consumption and 24.5% to their generation of electricity in 2015 and 2016, respectively. This energy consumption is divided as 8.9% coming from traditional biomass, 4.2% as heat energy (modern biomass, geothermal and solar heat), 3.9% from hydroelectricity and the remaining 2.2% is electricity from wind, solar, geothermal, and other forms of biomass. Worldwide investments in renewable technologies amounted to more than US$286 billion in 2015.[5] In 2017, worldwide investments in renewable energy amounted to US$279.8 billion, with China accounting for US$126.6 billion or 45% of the global investments, the United States for US$40.5 billion, and Europe for US$40.9 billion.[6] Globally, there are an estimated 7.7 million jobs associated with the renewable energy industries, with solar photovoltaics being the largest renewable employer.[7] Renewable energy systems are rapidly becoming more efficient and cheaper and their share of total energy consumption is increasing.[8] As of 2019 worldwide, more than two-thirds of all new electricity capacity installed was renewable.[9] Growth in consumption of coal and oil could end by 2020 due to increased uptake of renewables and natural gas.[10][11]

At the national level, at least 30 nations around the world already have renewable energy contributing more than 20 percent of energy supply. National renewable energy markets are projected to continue to grow strongly in the coming decade and beyond.[12] Some places and at least two countries, Iceland and Norway, generate all their electricity using renewable energy already, and many other countries have the set a goal to reach 100% renewable energy in the future.[13] At least 47 nations around the world already have over 50 percent of electricity from renewable resources

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