Solar Electric Power -- the U.S. Photovoltaic Industry Roadmap
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U.S. Energy in the 21St Century: a Primer
U.S. Energy in the 21st Century: A Primer March 16, 2021 Congressional Research Service https://crsreports.congress.gov R46723 SUMMARY R46723 U.S. Energy in the 21st Century: A Primer March 16, 2021 Since the start of the 21st century, the U.S. energy system has changed tremendously. Technological advances in energy production have driven changes in energy consumption, and Melissa N. Diaz, the United States has moved from being a net importer of most forms of energy to a declining Coordinator importer—and a net exporter in 2019. The United States remains the second largest producer and Analyst in Energy Policy consumer of energy in the world, behind China. Overall energy consumption in the United States has held relatively steady since 2000, while the mix of energy sources has changed. Between 2000 and 2019, consumption of natural gas and renewable energy increased, while oil and nuclear power were relatively flat and coal decreased. In the same period, production of oil, natural gas, and renewables increased, while nuclear power was relatively flat and coal decreased. Overall energy production increased by 42% over the same period. Increases in the production of oil and natural gas are due in part to technological improvements in hydraulic fracturing and horizontal drilling that have facilitated access to resources in unconventional formations (e.g., shale). U.S. oil production (including natural gas liquids and crude oil) and natural gas production hit record highs in 2019. The United States is the largest producer of natural gas, a net exporter, and the largest consumer. Oil, natural gas, and other liquid fuels depend on a network of over three million miles of pipeline infrastructure. -
Solar Aircraft Design
Cumhuriyet Üniversitesi Fen Fakültesi Cumhuriyet University Faculty of Science Fen Bilimleri Dergisi (CFD), Cilt:36, No: 3 Özel Sayı (2015) Science Journal (CSJ), Vol. 36, No: 3 Special Issue (2015) ISSN: 1300-1949 ISSN: 1300-1949 SOLAR AIRCRAFT DESIGN Sadegh RAHMATI1,*, Amir GHASED2 1,2Department of Mechanical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran Received: 01.02.2015; Accepted: 05.05.2015 ______________________________________________________________________________________________ Abstract. Generally domain Aircraft uses conventional fuel. These fuel having limited life, high cost and pollutant. Also nowadays price of petrol and other fuels are going to be higher, because of scarcity of those fuels. So there is great demand of use of non-exhaustible unlimited source of energy like solar energy. Solar aircraft is one of the ways to utilize solar energy. Solar aircraft uses solar panel to collect the solar radiation for immediate use but it also store the remaining part for the night flight. This paper intended to stimulate research on renewable energy sources for aviation. In future solar powered air planes could be used for different types of aerial momitoring and unmanned flights. This review paper brietly shows history, application and use of solar aircraft. We are focusing on design and fabrication of solar aircraft which is unmanned prototype. Keywords: Solar energy, Reynolds number, Bernoulli’s principle 1. INTRODUCTION Energy comes in different forms. Light is a form of energy. Sun is source of energy called “sunlight”. Sunshine is free and never gets used up Also. There is a lot of it. The sunlight that heats the Earth in an hour has more energy than the people of the world use in a year. -
Hybrid Energy Storage System
Hybrid Energy Storage System • Hybrid inverter Model : E5 • 6.0 kWh Li-ion Battery Model : BX_6.0 • Smart monitor Model : R4 • Power meter Model : P1E / P3E www.solar-inverter.com Hybrid inverter Solar cell The hybrid inverter can power household loads. The rest power can charge to battery or feed-in to grid. At nighttime, it can adjust electricity and make it possible to charge battery from grid. Battery 6 kWh high capacity Li-ion battery can provide power and by storing solar energy at daytime for nighttime use. DC Power meter Smart meter can calculate power consumption and feed-in to grid. It also can calculate how much power purchased from utility company at daytime and nighttime. Distribution panel Smart monitor DC Owner can simply read power produced, power consumption and convert and control to different operation modes via AC smart monitor. System diagram The Hybrid E5 energy storage system is composed of the single phase E5 hybrid inverter Distribution Panel as well as an external battery cabinet equipped with a 6 kWh Li-ion battery, a power meter and smart monitor. The Hybrid E5 storage system is designed for new PV systems and features a high charging efficiency up to 97%. This is made possible since the E5 inverter can send DC E5 hybrid inverter electricity generated by the PV system directly to the battery, without additional power conversion Power Meter steps or equipment needed. Because the E5 inverter and battery cabinet ship as two separate compact pieces in the system, greater flexibility and simplified installation of the equipment are an added benefit. -
Solar in Bozeman
Solar in Bozeman This guide provides information about harnessing the as well as the roof. Assess which areas are shaded by sun to power and heat your home along with City of neighboring buildings and trees or other impediments to Bozeman basic policies and guidelines. sunlight. Consider changes in sunlight access between seasons; a tree with a heavy leaf canopy in the summer will WHY SOLAR IN BOZEMAN? reduce the effectiveness of a solar array that is only shaded Bozeman averages 320 days a year in which the sun shines by bare branches in the winter. Think beyond your property for at least part of the day, making solar power a viable and visit with your neighboring property owners about method for reducing our community’s dependence on non- future landscaping and building plans. Note that the City of renewable energy to heat and power our buildings. Bozeman ordinances do not prevent adjacent landowners from planting trees or constructing buildings that may shade TYPES OF SOLAR TECHNOLOGY your solar energy equipment. For those choosing to harness the sun’s energy, there are two types of solar technology. AESTHETICS It is important to consider the aesthetics of a solar power Passive solar technologies reduce the need to system before installation. Flush mounted systems, such mechanically heat and cool a structure and can often as PV systems, are the least aesthetically obtrusive and be achieved by considering site conditions of a property only sit about four inches above roofing shingles. Physically during the initial or remodel design phase. For example, supported solar systems, such as solar thermal systems, can a home might be designed with a large bank of windows range in height and might negatively affect the height, mass facing south and west so that the sun can heat these and scale of a structure. -
Encapsulation of Organic and Perovskite Solar Cells: a Review
Review Encapsulation of Organic and Perovskite Solar Cells: A Review Ashraf Uddin *, Mushfika Baishakhi Upama, Haimang Yi and Leiping Duan School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney 2052, Australia; [email protected] (M.B.U.); [email protected] (H.Y.); [email protected] (L.D.) * Correspondence: [email protected] Received: 29 November 2018; Accepted: 21 January 2019; Published: 23 January 2019 Abstract: Photovoltaic is one of the promising renewable sources of power to meet the future challenge of energy need. Organic and perovskite thin film solar cells are an emerging cost‐effective photovoltaic technology because of low‐cost manufacturing processing and their light weight. The main barrier of commercial use of organic and perovskite solar cells is the poor stability of devices. Encapsulation of these photovoltaic devices is one of the best ways to address this stability issue and enhance the device lifetime by employing materials and structures that possess high barrier performance for oxygen and moisture. The aim of this review paper is to find different encapsulation materials and techniques for perovskite and organic solar cells according to the present understanding of reliability issues. It discusses the available encapsulate materials and their utility in limiting chemicals, such as water vapour and oxygen penetration. It also covers the mechanisms of mechanical degradation within the individual layers and solar cell as a whole, and possible obstacles to their application in both organic and perovskite solar cells. The contemporary understanding of these degradation mechanisms, their interplay, and their initiating factors (both internal and external) are also discussed. -
Hydroelectric Power -- What Is It? It=S a Form of Energy … a Renewable Resource
INTRODUCTION Hydroelectric Power -- what is it? It=s a form of energy … a renewable resource. Hydropower provides about 96 percent of the renewable energy in the United States. Other renewable resources include geothermal, wave power, tidal power, wind power, and solar power. Hydroelectric powerplants do not use up resources to create electricity nor do they pollute the air, land, or water, as other powerplants may. Hydroelectric power has played an important part in the development of this Nation's electric power industry. Both small and large hydroelectric power developments were instrumental in the early expansion of the electric power industry. Hydroelectric power comes from flowing water … winter and spring runoff from mountain streams and clear lakes. Water, when it is falling by the force of gravity, can be used to turn turbines and generators that produce electricity. Hydroelectric power is important to our Nation. Growing populations and modern technologies require vast amounts of electricity for creating, building, and expanding. In the 1920's, hydroelectric plants supplied as much as 40 percent of the electric energy produced. Although the amount of energy produced by this means has steadily increased, the amount produced by other types of powerplants has increased at a faster rate and hydroelectric power presently supplies about 10 percent of the electrical generating capacity of the United States. Hydropower is an essential contributor in the national power grid because of its ability to respond quickly to rapidly varying loads or system disturbances, which base load plants with steam systems powered by combustion or nuclear processes cannot accommodate. Reclamation=s 58 powerplants throughout the Western United States produce an average of 42 billion kWh (kilowatt-hours) per year, enough to meet the residential needs of more than 14 million people. -
Power Electronics for Distributed Energy Systems and Transmission and Distribution Applications
ORNL/TM-2005/230 POWER ELECTRONICS FOR DISTRIBUTED ENERGY SYSTEMS AND TRANSMISSION AND DISTRIBUTION APPLICATIONS L. M. Tolbert T. J. King B. Ozpineci J. B. Campbell G. Muralidharan D. T. Rizy A. S. Sabau H. Zhang* W. Zhang* Y. Xu* H. F. Huq* H. Liu* December 2005 *The University of Tennessee-Knoxville ORNL/TM-2005/230 Engineering Science and Technology Division POWER ELECTRONICS FOR DISTRIBUTED ENERGY SYSTEMS AND TRANSMISSION AND DISTRIBUTION APPLICATIONS L. M. Tolbert T. J. King B. Ozpineci J. B. Campbell G. Muralidharan D. T. Rizy A. S. Sabau H. Zhang W. Zhang Y. Xu H. F. Huq H. Liu Publication Date: December 2005 Prepared by the OAK RIDGE NATIONAL LABORATORY Oak Ridge, Tennessee 37831 managed by UT-BATTELLE, LLC for the U.S. DEPARTMENT OF ENERGY Under contract DE-AC05-00OR22725 DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge. Web site http://www.osti.gov/bridge Not available externally. Reports are available to DOE employees, DOE contractors, Energy Technology Data Exchange (ETDE) representatives, and International Nuclear Information System (INIS) representatives from the following source. Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831 Telephone 865-576-8401 Fax 865-576-5728 E-mail [email protected] Web site http://www.osti.gov/contact.html This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. -
History of Solar Flight July 2008
History of Solar Flight July 2008 solar airplane aircraft continuous sustainable flight solar-powered solar cells mppt helios Sky-Sailor sun-powered HALE platform solaire avion vol continu dévelopement durable énergie solaire cellules plateforme History of Solar flight André Noth, [email protected] Autonomous Systems Lab, Swiss Federal Institute of Technology Zürich 1. The conjunction of two pioneer fields, electric flight and solar cells The use of electric power for flight vehicles propulsion is not new. The first one was the hydrogen- filled dirigible France in year 1884 that won a 10 km race around Villacoulbay and Medon. At this time, the electric system was superior to its only rival, the steam engine but then with the arrival of gasoline engines, work on electrical propulsion for air vehicles was abandoned and the field lay dormant for almost a century [2]. On the 30th June 1957, Colonel H. J. Taplin of the United Kingdom made the first officially recorded electric powered radio controlled flight with his model “Radio Queen”, which used a permanent-magnet motor and a silver-zinc battery. Unfortunately, he didn’t carry on these experiments. Further developments in the field came from the great German pioneer, Fred Militky, who first achieved a successful flight with a Radio Queen, 1957 free flight model in October 1957. Since this premises, electric flight continuously evolved with constant improvements in the fields of motors and batteries [12]. Three years before Taplin and Militky’s experiments, in 1954, photovoltaic technology was born at Bell Telephone Laboratories. Daryl Chapin, Calvin Fuller, and Gerald Pearson developed the first silicon photovoltaic cell capable of converting enough of the sun’s energy into power to run everyday electrical Gerald Pearson, Daryl Chapin equipment. -
Post-EPIRA Impacts of Electric Power Industry Competition Policies
A Service of Leibniz-Informationszentrum econstor Wirtschaft Leibniz Information Centre Make Your Publications Visible. zbw for Economics Navarro, Adoracion M.; Detros, Keith C.; Dela Cruz, Kirsten J. Working Paper Post-EPIRA impacts of electric power industry competition policies PIDS Discussion Paper Series, No. 2016-15 Provided in Cooperation with: Philippine Institute for Development Studies (PIDS), Philippines Suggested Citation: Navarro, Adoracion M.; Detros, Keith C.; Dela Cruz, Kirsten J. (2016) : Post-EPIRA impacts of electric power industry competition policies, PIDS Discussion Paper Series, No. 2016-15, Philippine Institute for Development Studies (PIDS), Quezon City This Version is available at: http://hdl.handle.net/10419/173536 Standard-Nutzungsbedingungen: Terms of use: Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Documents in EconStor may be saved and copied for your Zwecken und zum Privatgebrauch gespeichert und kopiert werden. personal and scholarly purposes. Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle You are not to copy documents for public or commercial Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich purposes, to exhibit the documents publicly, to make them machen, vertreiben oder anderweitig nutzen. publicly available on the internet, or to distribute or otherwise use the documents in public. Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, If the documents have been made available under an Open gelten abweichend von diesen Nutzungsbedingungen die in der dort Content Licence (especially Creative Commons Licences), you genannten Lizenz gewährten Nutzungsrechte. may exercise further usage rights as specified in the indicated licence. www.econstor.eu Philippine Institute for Development Studies Surian sa mga Pag-aaral Pangkaunlaran ng Pilipinas Post-EPIRA Impacts of Electric Power Industry Competition Policies Adoracion M. -
Concentrating Solar Power: Energy from Mirrors
DOE/GO-102001-1147 FS 128 March 2001 Concentrating Solar Power: Energy from Mirrors Mirror mirror on the wall, what's the The southwestern United States is focus- greatest energy source of all? The sun. ing on concentrating solar energy because Enough energy from the sun falls on the it's one of the world's best areas for sun- Earth everyday to power our homes and light. The Southwest receives up to twice businesses for almost 30 years. Yet we've the sunlight as other regions in the coun- only just begun to tap its potential. You try. This abundance of solar energy makes may have heard about solar electric power concentrating solar power plants an attrac- to light homes or solar thermal power tive alternative to traditional power plants, used to heat water, but did you know there which burn polluting fossil fuels such as is such a thing as solar thermal-electric oil and coal. Fossil fuels also must be power? Electric utility companies are continually purchased and refined to use. using mirrors to concentrate heat from the sun to produce environmentally friendly Unlike traditional power plants, concen- electricity for cities, especially in the trating solar power systems provide an southwestern United States. environmentally benign source of energy, produce virtually no emissions, and con- Photo by Hugh Reilly, Sandia National Laboratories/PIX02186 Photo by Hugh Reilly, This concentrating solar power tower system — known as Solar Two — near Barstow, California, is the world’s largest central receiver plant. This document was produced for the U.S. Department of Energy (DOE) by the National Renewable Energy Laboratory (NREL), a DOE national laboratory. -
Downloadfile/566729524649660/Duartefigueiredo Thesis.Pdf (Accessed on 20 May 2021)
drones Article Development of a Solar-Powered Unmanned Aerial Vehicle for Extended Flight Endurance Yauhei Chu †, Chunleung Ho †, Yoonjo Lee † and Boyang Li * Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; [email protected] (Y.C.); [email protected] (C.H.); [email protected] (Y.L.) * Correspondence: [email protected]; Tel.: +852-340-082-31 † Authors have contributed equally. Abstract: Having an exciting array of applications, the scope of unmanned aerial vehicle (UAV) application could be far wider one if its flight endurance can be prolonged. Solar-powered UAV, promising notable prolongation in flight endurance, is drawing increasing attention in the industries’ recent research and development. This work arose from a Bachelor’s degree capstone project at Hong Kong Polytechnic University. The project aims to modify a 2-metre wingspan remote-controlled (RC) UAV available in the consumer market to be powered by a combination of solar and battery-stored power. The major objective is to greatly increase the flight endurance of the UAV by the power generated from the solar panels. The power system is first designed by selecting the suitable system architecture and then by selecting suitable components related to solar power. The flight control system is configured to conduct flight tests and validate the power system performance. Under fair experimental conditions with desirable weather conditions, the solar power system on the aircraft results in 22.5% savings in the use of battery-stored capacity. The decrease rate of battery voltage Citation: Chu, Y.; Ho, C.; Lee, Y.; Li, during the stable level flight of the solar-powered UAV built is also much slower than the same B. -
Solar Power History Pros and Cons
Solar Power History Solar energy is the most readily available source of energy on the planet. Every hour the sun sends enough energy to power the entire planet for a year! Capturing the sun’s energy to do work for us began in the 7th century BCE when magnifying lenses were used to light fires. In the 18th and 19th century, solar technology really began to heat up with the invention of solar ovens and the discovery of the photovoltaic effect (the creation of electric current in a material upon exposure to light). During the late 1800’s and throughout the 1900’s, three different solar technologies emerged: solar photovoltaics , concentrating solar power and passive solar (discussed more below). In the early 1960's satellites in the United States and Soviet space programs were powered by solar cells and in the late 1960's solar power was basically the standard for powering space bound satellites. The period from the 1970's to the 1990's saw a change in the use of solar cells. Solar cells began powering railroad crossing signals and in remote places to help power homes, Australia used solar cells in their microwave towers to expand their telecommunication capabilities. Desert regions used solar power to assist with irrigation, when other means of power were not available. Today, you may see solar powered cars and solar powered aircraft. Recently new technology has provided such advances as screen printed solar cells. There is now a solar fabric that can be used to side a house and solar shingles for roofing.