Renewable energies | Wikipedia audio article
Channel: Subhajit Sahu
Date: 2019-01-03

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Renewable_energy


00:05:27 1 Overview
00:14:27 2 History
00:19:00 3 Mainstream technologies
00:19:10 3.1 Wind power
00:21:33 3.2 Hydropower
00:25:05 3.3 Solar energy
00:28:40 3.4 Geothermal energy
00:32:12 3.5 Bio energy
00:39:26 3.6 Energy storage
00:40:27 4 Market and industry trends
00:40:47 4.1 Growth of renewables
00:46:05 4.2 Economic trends
00:49:00 4.3 Hydroelectricity
00:51:11 4.4 Wind power development
00:53:43 4.5 Solar thermal
00:56:12 4.6 Photovoltaic development
00:58:36 4.7 Photovoltaic power stations
01:00:19 4.8 Biofuel development
01:02:43 4.9 Geothermal development
01:04:22 4.10 Developing countries
01:08:00 4.11 Industry and policy trends
01:11:31 4.12 100% renewable energy
01:16:36 5 Emerging technologies
01:30:36 6 Debate
01:34:00 7 Environmental impact
01:34:48 8 Gallery



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SUMMARY
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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. Renewable energy often provides energy in four important areas: electricity generation, air and water heating/cooling, transportation, and rural (off-grid) energy services.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% hydro electricity and 2.2% is electricity from wind, solar, geothermal, and biomass. Worldwide investments in renewable technologies amounted to more than US$286 billion in 2015, with countries such as China and the United States heavily investing in wind, hydro, solar and biofuels. Globally, there are an estimated 7.7 million jobs associated with the renewable energy industries, with solar photovoltaics being the largest renewable employer. As of 2015 worldwide, more than half of all new electricity capacity installed was renewable.Renewable energy resources exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries. Rapid deployment of renewable energy and energy efficiency is resulting in significant energy security, climate change mitigation, and economic benefits. The results of a recent review of the literature concluded that as greenhouse gas (GHG) emitters begin to be held liable for damages resulting from GHG emissions resulting in climate change, a high value for liability mitigation would provide powerful incentives for deployment of renewable energy technologies.  In international public opinion surveys there is strong support for promoting renewable sources such as solar power and wind power. 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. 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. For example, in Denmark the government decided to switch the total energy supply (electricity, mobility and heating/cooling) to 100% renewable energy by 2050.While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas and developing countries, where energy is often crucial in human development. Former United Nations Secretary-General Ban Ki-moon has said that renewable energy has the ability to lift the poorest nations to new levels of prosperity. A ...