Portal:Renewable energy
 
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The Renewable Energy Portal
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Introduction Renewable energy (or green energy, low-carbon energy) is energy from renewable natural resources that are replenished on a human timescale. Using renewable energy technologies helps with climate change mitigation, energy security, and also has some economic benefits. Commonly used renewable energy types include solar energy, wind power, hydropower, bioenergy and geothermal power. Renewable energy installations can be large or small. They are suited for urban as well as rural areas. Renewable energy is often deployed together with further electrification. This has several benefits: electricity can move heat or objects efficiently, and is clean at the point of consumption. Variable renewable energy sources are those that have a fluctuating nature, such as wind power and solar power. In contrast, controllable renewable energy sources include dammed hydroelectricity, bioenergy, or geothermal power. Renewable energy systems are rapidly becoming more efficient and cheaper. As a result, their share of the global energy consumption is increasing. A large majority of worldwide newly installed electricity capacity is now renewable. In most countries, photovoltaic solar or onshore wind are the cheapest new-build electricity. Renewable energy can help reduce energy poverty in rural and remote areas of developing countries, where lack of energy access is often hindering economic development. Renewable energy resources exist all over the world. This is in contrast to fossil fuels resources which are concentrated in a limited number of countries. There are also other renewable energy technologies that are still under development, for example enhanced geothermal systems, concentrated solar power, cellulosic ethanol, and marine energy. From 2011 to 2021, renewable energy grew from 20% to 28% of global electricity supply. Use of fossil energy shrank from 68% to 62%, and nuclear from 12% to 10%. The share of hydropower decreased from 16% to 15% while power from sun and wind increased from 2% to 10%. Biomass and geothermal energy grew from 2% to 3%. In 2022, renewables accounted for 30% of global electricity generation, up from 21% in 1985. Many countries around the world already have renewable energy contributing more than 20% of their total energy supply. Some countries generate over half their electricity from renewables. A few countries generate all their electricity from renewable energy. National renewable energy markets are projected to continue to grow strongly in the 2020s and beyond. The deployment of renewable energy is being hindered by massive fossil fuel subsidies. In 2022 the International Energy Agency (IEA) requested all countries to reduce their policy, regulatory, permitting and financing obstacles for renewables. This would increase the chances of the world reaching net zero carbon emissions by 2050. According to the IEA, to achieve net zero emissions by 2050, 90% of global electricity generation will need to be produced from renewable sources. There are also ongoing debates around the renewable energy topic. For example, whether nuclear power should be grouped under the renewable energy category or not. There are also debates around geopolitics, the metal and mineral extraction needed for solar panels and batteries, possible installations in conservation areas and the need to recycle solar panels. Although most renewable energy sources are sustainable, some are not. For example, some biomass sources are unsustainable at current rates of exploitation. (Full article...) Selected article - There are several solar power plants in the Mojave Desert which supply power to the electricity grid. Insolation (solar radiation) in the Mojave Desert is among the best available in the United States, and some significant population centers are located in the area. These plants can generally be built in a few years because solar plants are built almost entirely with modular, readily available materials. Solar Energy Generating Systems (SEGS) is the name given to nine solar power plants in the Mojave Desert which were built in the 1980s, the first commercial solar plant. These plants have a combined capacity of 354 megawatts (MW) which made them the largest solar power installation in the world, until Ivanpah Solar Power Facility was finished in 2014. Nevada Solar One is a solar thermal plant with a 64 MW generating capacity, located near Boulder City, Nevada. The Copper Mountain Solar Facility is a 150 MW photovoltaic power plant in Boulder City, Nevada. The Ivanpah Solar Power Facility is a 370 MW facility which consists of three separate solar thermal power plants just off interstate highway 15 on the Nevada-California border in the Mojave Desert. There are also plans to build other large solar plants in the Mojave Desert. (Full article...)Quotations -
Main topicsRenewable energy sourcesGeneralRenewable energy commercialization · Smart grid · Timeline of sustainable energy research 2020–present Renewable energy by countryList of countries by electricity production from renewable sources
WikiProjectsWikiProjects connected with renewable energy: Selected image -Selected biography -Jeremy Leggett is a British social entrepreneur and writer. He founded and was a board director of Solarcentury from 1997 to 2020, an international solar solutions company, and founded and was chair of SolarAid, a charity funded with 5% of Solarcentury's annual profits that helps solar-lighting entrepreneurs get started in Africa (2006–2020). SolarAid owns a retail brand SunnyMoney that was for a time Africa's top-seller of solar lighting, having sold well over a million solar lights, all profits recycled to the cause of eradicating the kerosene lantern from Africa. Leggett is winner of the first Hillary Laureate for International Leadership in Climate Change (2009), a Gothenburg Prize (2015), the first non-Dutch winner of a Royal Dutch Honorary Sustainability Award (2016), and has been described in the Observer as "Britain’s most respected green energy boss." He is the author of five books: "The Winning of The Carbon War", an account of what he sees as the "turnaround years" in the dawn of the global energy transition, 2013–2015, with an update edition spanning 2016–2017, "The Energy of Nations" (2013), "The Solar Century" (2009), "Half Gone" (2005) and "The Carbon War" (2000). He continues to write on his blog, and in occasional articles for national media. He lectured on short courses in business and society at the Universities of Cambridge (UK) and St Gallen (Switzerland). His vision is of a renaissance in civilisation aided or even triggered by renewable energy and its intrinsic social benefits. (Full article...)Did you know? -... that the United Nations Intergovernmental Panel on Climate Change (IPCC) published Renewable Energy Sources and Climate Change Mitigation (SRREN) in May 2011 ? The IPCC examined renewable energy and energy efficiency in its fourth assessment report, published in 2007, but members have now decided that renewable energy commercialization merits in-depth coverage because of its importance in reducing carbon emissions. General images -The following are images from various renewable energy-related articles on Wikipedia.
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![Image 22Concentrated solar panels are getting a power boost. Pacific Northwest National Laboratory (PNNL) will be testing a new concentrated solar power system – one that can help natural gas power plants reduce their fuel usage by up to 20 percent.[needs update] (from Solar energy)](/wiki/File:Photo_of_the_Week-_Boosting_Solar_Technology_(8722948189).jpg)
