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| solar panel | |
|---|---|
| Name | Solar panel |
| Caption | Photovoltaic panels on a rooftop |
| Inventor | Alexandre-Edmond Becquerel, Albert Einstein, William Grylls Adams |
| Introduced | 1954 (Bell Labs) |
| Type | Renewable energy technology |
| Application | Electricity generation, satellite power, remote sensing |
solar panel
Solar panels convert sunlight into electrical power using semiconductor cells developed through research at Bell Labs, materials studied by Marie Curie, and engineering practises applied in projects like Apollo program missions and International Space Station installations. Inventors and scientists such as Alexandre-Edmond Becquerel, Albert Einstein, and William Grylls Adams provided foundations later advanced by corporations including SunPower, First Solar, and institutions such as Massachusetts Institute of Technology, Fraunhofer Society, and National Renewable Energy Laboratory. Deployment of panels features in national initiatives exemplified by Germany’s Energiewende, China’s industrial scaling, and utility programs following examples from California Energy Commission and European Union directives.
Research traces to early experiments by Alexandre-Edmond Becquerel and demonstrations by William Grylls Adams; theoretical explanation of the photoelectric effect by Albert Einstein connected to awards like the Nobel Prize in Physics. Mid-20th-century breakthroughs occurred at Bell Labs with the first practical silicon cells and applications in Vanguard 1 and Explorer 1 satellites, while commercialization accelerated with ventures such as Sharp Corporation and government programs in United States Department of Energy and Japan’s industrial policy. Large-scale adoption followed policy frameworks like Feed-in tariff schemes initiated in Germany and deployment programs in California, China, and India under initiatives inspired by International Renewable Energy Agency studies.
Panels consist of layers including protective glass, encapsulant, junction box, and framing developed by manufacturers such as Trina Solar and Canadian Solar; core cells are mounted on backsheet materials from suppliers linked to 3M and DuPont. Electrical interconnection uses busbars and diodes designed with standards from IEC and testing protocols from Underwriters Laboratories used by utilities like Iberdrola and EDF. Balance-of-system elements include inverters produced by firms like SMA Solar Technology, mounting hardware by Schletter, and monitoring systems provided by Siemens and Schneider Electric integrated into grids managed by operators such as National Grid plc and PJM Interconnection.
Technologies include crystalline silicon modules from suppliers including JinkoSolar and REC Group; thin-film variants produced by First Solar using cadmium telluride and technologies investigated at Helmholtz Association. Emerging types encompass perovskite cells studied at Oxford University and tandem architectures developed in collaborations between University of New South Wales and corporations like Spectrolab. Specialized technologies supply spacecraft such as multi-junction concentrator cells from NASA and Boeing-affiliated projects; building-integrated photovoltaics reference projects by Foster + Partners and Skanska.
Manufacturing relies on processes including wafering, doping, and metallization in facilities by LONGi Green Energy and Hanwha Q CELLS; supply chains are impacted by policies from WTO disputes and trade measures involving United States and China. Material sourcing of silicon involves companies like Wacker Chemie and polysilicon producers in Kazakhstan and Qinghai; thin-film supply chains involve rare elements with extraction industries in Australia and Chile. Quality assurance follows standards from ISO bodies and certification regimes used by utilities and procurement agencies in European Commission tenders.
Module efficiency has improved from early cells to modern commercial modules from SunPower and LG Electronics; laboratory records are set at institutions like National Renewable Energy Laboratory and Fraunhofer ISE. Output depends on irradiance, temperature coefficients measured in standards from IEC, and system design decisions influenced by grid operators such as California Independent System Operator. Performance modeling uses meteorological datasets from NOAA and irradiance models applied by consultancies like DNV and Wood Mackenzie for project finance decisions by investors such as BlackRock and Goldman Sachs.
Large-scale farms are sited and permitted under planning regimes in jurisdictions including Nevada, Andalusia, and Queensland; EPC contractors include Bechtel and Fluor Corporation. Rooftop installations use mounting systems from firms such as Unirac and require electrical interconnection inspections by authorities like Local Building Departments and utilities such as Con Edison. Maintenance practices include cleaning protocols endorsed by research at University of Arizona and predictive monitoring adopted by companies like Enphase Energy and SolarEdge Technologies; recycling programs are coordinated with agencies like EPA and industry consortia in European Commission initiatives.
Lifecycle analyses by IPCC-referenced studies and reports from International Energy Agency quantify greenhouse gas reductions when panels replace fossil-fired plants such as Bełchatów Power Station and Suralaya Power Station. Economic effects appear in job reports by IRENA and national statistics from Bureau of Labor Statistics showing employment in manufacturing clusters similar to Shenzhen and Riyadh industrial zones. Environmental considerations involve land-use planning decisions in regions like Sahara and Mojave Desert, material recycling policies influenced by Basel Convention discussions, and subsidy regimes shaped by cases at WTO and fiscal incentives modeled by finance ministries including HM Treasury.