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Rooftop Photovoltaic Power Station
A rooftop solar power system, or rooftop PV system, is a photovoltaic (PV) system that has its electricity-generating solar panels mounted on the rooftop of a residential or commercial building or structure. The various components of such a system include photovoltaic modules, mounting systems, cables, solar inverters and other electrical accessories. Rooftop mounted systems are small compared to utility-scale solar ground-mounted photovoltaic power stations with capacities in the megawatt range, hence being a form of distributed generation. Most rooftop PV stations are Grid-connected photovoltaic power systems. Rooftop PV systems on residential buildings typically feature a capacity of about 5–20 kilowatts (kW), while those mounted on commercial buildings often reach 100 kilowatts to 1 Megawatt (MW). Very large roofs can house industrial scale PV systems in the range of 1–10 Megawatts. Installation The urban environment provides a large amount of empty rooftop space ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grid-connected Photovoltaic Power System
A grid-connected photovoltaic system, or grid-connected PV system is an electricity generating solar PV power system that is connected to the utility grid. A grid-connected PV system consists of solar panels, one or several inverters, a power conditioning unit and grid connection equipment. They range from small residential and commercial rooftop systems to large utility-scale solar power stations. When conditions are right, the grid-connected PV system supplies the excess power, beyond consumption by the connected load, to the utility grid. Operation Residential, grid-connected rooftop systems which have a capacity more than 10 kilowatts can meet the load of most consumers. They can feed excess power to the grid where it is consumed by other users. The feedback is done through a meter to monitor power transferred. Photovoltaic wattage may be less than average consumption, in which case the consumer will continue to purchase grid energy, but a lesser amount than previously ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In The United States
Solar power includes solar farms as well as local distributed generation, mostly on rooftops and increasingly from community solar arrays. In 2021, utility-scale solar power generated 115 terawatt-hours (TWh), or 2.8% of electricity in the United States. Total solar generation that year, including estimated small-scale photovoltaic generation, was 164 TWh. As of the end of 2021, the United States had 121 gigawatts (GW) of installed photovoltaic and concentrated solar power capacity combined. This capacity is exceeded only by China and the European Union. In 2021, 36% of all new electricity generation capacity in the country came from solar, surpassed only by wind with 41%. By 2015, solar employment had overtaken oil and gas as well as coal employment in the United States. In 2020, more than 230,000 Americans were employed in the solar industry. The United States conducted much early research in photovoltaics and concentrated solar power. It is among the top coun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In The United Kingdom
Solar power represented a very small part of electricity production in the United Kingdom until the 2010s when it increased rapidly, thanks to feed-in tariff (FIT) subsidies and the falling cost of photovoltaic (PV) panels. , installed capacity was over 13.5gigawatt (GW), with the 72MW(DC) Shotwick Solar Farm being the largest in the UK. Annual generation was slightly under 13 TWh in 2020 (4.1% of UK electricity consumption), and peak generation was less than 10GW. Solar PV panels have a capacity factor of around 10% in the UK climate. In October 2022, home rooftop solar panels were estimated to pay back their cost in ten to twenty years. Solar potential The UK's annual insolation is in the range of 750–1,100kilowatt-hours per square metre (kWh/m2). London receives 0.52 and 4.74kWh/m2 per day in December and July, respectively. While the sunniest parts of the UK receive much less solar radiation than the sunniest parts of Europe, the country's insolation in the south is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In Japan
Solar power in Japan has been expanding since the late 1990s. The country is a major manufacturer and exporter of photovoltaics (PV) and a large installer of domestic PV systems, with most of them grid connected. Japan has a solar irradiance of about 4.3 to 4.8 kWh/(m2·day). Solar power has become an important national priority since the country's shift in policies toward renewable energy after the Fukushima Daiichi nuclear disaster in 2011. Japan was the world's second largest market for solar PV growth in 2013 and 2014, adding a record 6.97 GW and 9.74 GW of nominal nameplate capacity, respectively. By the end of 2017, cumulative capacity reached 50 GW, the world's second largest solar PV installed capacity, behind Solar power in China, China.Pv-magazine FEBRUARY 15, 2018. "Japan will likely install 6 GW to 7.5 GW (DC) of solar in 2018, from about 7 GW in 2017..." Overall installed capacity in 2016 was estimated to be sufficient to supply almost 5% of the nation's annual ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In Italy
Italy's solar power generation capacity is one of the largest in the world, with its 22.56 GW putting it sixth, just ahead of Australia. In 2019, Italy set a national goal of reaching 50 GW by 2030. In 2022, Italy is anticipating more than 3 GW of new capacity, which will be the largest addition to solar generation since 2012. During the first decade of this century, Italy was the third country after Germany and Spain to experience an unprecedented boom in solar installations after actively promoting solar power through government incentives. In July 2005, the country launched its first "Conto Energia" programme supporting the development of renewable power. Growth in solar installations picked up immediately but it was the years 2009–2013 that saw a boom in installed photovoltaic (PV) nameplate capacity, increasing nearly 15-fold, and 2012's year-end capacity of over 16 GW ranked second in the world after Germany, ahead of the other leading contenders, China, Japan and the Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In Germany
Solar power in Germany consists almost exclusively of photovoltaics (PV) and accounted for an estimated 8.2 percent of the country's gross-electricity generation in 2019. About 1.5 million photovoltaic systems were installed around the country in 2014, ranging from small rooftop systems, to medium commercial and large utility-scale solar parks. Germany's largest solar farms are located in Meuro, Neuhardenberg, and Templin with capacities over 100 MW. Germany has been among the world's top PV installer for several years, with total installed capacity amounting to 41.3 gigawatts (GW) by the end of 2016, behind only China. However, new installations of PV systems have declined steadily since the record year of 2011. It's estimated that by 2017 over 70% of the country's jobs in the solar industry have been lost in the solar sector in recent years. Proponents from the PV industry blame the lack of governmental commitment, while others point out the financial burden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In France
Solar power in France including overseas territories reached an installed capacity figure of 11.2 GW by the end of 2020. The solar power capacity is set to continue expanding with a target of around 18–20 GW installed by 2023. However, wavering political support for new installations slowed PV deployment since the record year of 2011, when 1,700 MW had been installed. However, the sector appears to have recovered its previous pace, with nearly 1,400 MW coming on line in the first half of 2021. In January 2016, the President of France, François Hollande, and the Prime Minister of India, Narendra Modi, laid the foundation stone for the headquarters of the International Solar Alliance (ISA) in Gwalpahari, Gurgaon, India. The ISA will focus on promoting and developing solar energy and solar products for countries lying wholly or partially between the Tropic of Cancer and the Tropic of Capricorn. The alliance of over 120 countries was announced at the Paris COP21 climate summit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In China
China is the largest market in the world for both photovoltaics and solar thermal energy. China's photovoltaic industry began by making panels for satellites, and transitioned to the manufacture of domestic panels in the late 1990s. After substantial government incentives were introduced in 2011, China's solar power market grew dramatically: the country became the world's leading installer of photovoltaics in 2013. China surpassed Germany as the world's largest producer of photovoltaic energy in 2015, and became the first country to have over 100 GW of total installed photovoltaic capacity in 2017. At the end of 2020, China's total installed photovoltaic capacity was 253 GW, accounting for one-third of the world's total installed photovoltaic capacity (760.4 GW). Most of China's solar power is generated within its western provinces and is transferred to other regions of the country. In 2011, China owned the largest solar power plant in the world at the time, the Huanghe Hydropo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Power In Australia
Solar power in Australia is a fast growing industry. As of September 2022, Australia's over 3.27 million solar PV installations had a combined capacity of 28,177 MW photovoltaic (PV) solar power, of which at least 4,258 MW was installed in the preceding 12 months. In 2019, 59 solar PV projects with a combined capacity of 2,881 MW was either under construction, constructed or due to start construction having reached financial closure. Solar accounted for 9.9% (or 22.5 TWh) of Australia's total electrical energy production in 2020. The sudden rise in solar PV installations in Australia since 2018 dramatically propelled the country from being considered a relative laggard to a strong leader by mid-2019. With an installed photovoltaic capacity of 16.3 GW at the end of 2019, Australia had the second highest per capita solar capacity at 637 watts per capita. The installed PV capacity in Australia increased 10-fold between 2009 and 2011, and quadrupled between 2011 and 2016. The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lidar
Lidar (, also LIDAR, or LiDAR; sometimes LADAR) is a method for determining ranges (variable distance) by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. It can also be used to make digital 3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has terrestrial, airborne, and mobile applications. ''Lidar'' is an acronym of "light detection and ranging" or "laser imaging, detection, and ranging". It is sometimes called 3-D laser scanning, a special combination of 3-D scanning and laser scanning. Lidar is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry. It is also used in control and navigation for som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latitude
In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pole, with 0° at the Equator. Lines of constant latitude, or ''parallels'', run east–west as circles parallel to the equator. Latitude and ''longitude'' are used together as a coordinate pair to specify a location on the surface of the Earth. On its own, the term "latitude" normally refers to the ''geodetic latitude'' as defined below. Briefly, the geodetic latitude of a point is the angle formed between the vector perpendicular (or ''normal'') to the ellipsoidal surface from the point, and the plane of the equator. Background Two levels of abstraction are employed in the definitions of latitude and longitude. In the first step the physical surface is modeled by the geoid, a surface which approximates the mean sea level over the ocea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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