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This timeline of sustainable energy research from 2020 to the present documents research and development in renewable energy, solar energy, and nuclear energy, particularly regarding energy production that is sustainable within the Earth system. Renewable energy capacity has steadily grown, led by solar photovoltaic power. [1]
2019 – The world record for solar cell efficiency at 47.1% was achieved by using multi-junction concentrator solar cells, developed at National Renewable Energy Laboratory, Golden, Colorado, USA. [ 43 ] [ additional citation(s) needed ] This is above the standard rating of 37% for polycrystalline photovoltaic or thin-film solar cells as of 2018.
The development of renewable energy and energy efficiency marked "a new era of energy exploration" in the United States, according to former President Barack Obama. [9] In a joint address to the Congress on February 24, 2009, President Obama called for doubling renewable energy within the following three years.
Solar Photovoltaic Energy Research, Development, and Demonstration Act of 1978: Accelerated solar power generation technologies; 1980 Energy Security Act, incorporating: [1] U.S. Synthetic Fuels Corporation Act; Biomass Energy and Alcohol Fuels Act; Renewable Energy Resources Act; Solar Energy and Energy Conservation Act; Geothermal Energy Act
Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy , wind power , and hydropower .
An energy transition is a broad shift in technologies and behaviours that are needed to replace one source of energy with another. [14]: 202–203 A prime example is the change from a pre-industrial system relying on traditional biomass, wind, water and muscle power to an industrial system characterized by pervasive mechanization, steam power and the use of coal.
Size comparison of modern wind turbines Wind energy generation by region. As the 21st century began, fossil fuel was still relatively cheap, but rising concerns over energy security, global warming, and eventual fossil fuel depletion led to an expansion of interest in all available forms of renewable energy. The fledgling commercial wind power ...
Thomas Young - the first to use the term "energy" to refer to kinetic energy in its modern sense, in 1802. In the history of physics, the history of energy examines the gradual development of energy as a central scientific concept.