All articles starting with E
17,681 articles
Energy Policy Act of 2005
The Energy Policy Act of 2005 is a United States federal law, signed by President George W. Bush on August 8, 2005, setting policy on energy production, efficiency, and electricity regulation.
Energy Policy and Conservation Act
The Energy Policy and Conservation Act (EPCA) is a 1975 United States federal law that created the Strategic Petroleum Reserve and CAFE fuel economy standards.
Energy policy of India
India's energy policy governs how India's central and state governments manage energy production, pricing, and decarbonization, pursuing 500 GW of non-fossil capacity by 2030 and net zero by 2070.
Energy policy of the European Union
The energy policy of the European Union is the body of EU law and funding combining an internal energy market with decarbonisation, under a shared competence since 1951.
Energy price cap
The energy price cap is a maximum on unit rates and standing charges that Ofgem sets for domestic energy tariffs in Great Britain, in force since January 2019.
Energy profile (chemistry)
An energy profile is a chemistry diagram of the relative energies of reactants, transition states, intermediates, and products, with peak heights giving the activation energies that determine a reaction's rate.
Energy recovery linac
An energy recovery linac (ERL) is a linear particle accelerator whose spent electron beam is decelerated in the same cavities that accelerated it, recovering most of its energy for reuse.
Energy recovery ventilator
An energy recovery ventilator (ERV) is a balanced mechanical ventilation device that supplies fresh air to a building while transferring heat and moisture between air streams.
Energy release rate
The energy release rate, usually written G, is a fracture mechanics quantity measuring the energy released per unit of new crack surface as a crack extends.
Energy Research Institute of the Russian Academy of Sciences (Институт энергетических исследований Российской академии наук)
Energy Research Institute of the Russian Academy of Sciences (ИНЭИ РАН, ERI RAS), founded 1985 in Moscow: RAS institute for energy system research and forecasting, known for SCANER models and the recurring Forecast of Energy Development of Russia and the World.
Energy security
Energy security is the ability of a country to ensure uninterrupted energy availability at affordable prices, a concept originating in oil policy after the 1973 oil embargo.
Energy Security Strategy (Australia)
Australia's Energy Security Strategy is the set of Commonwealth laws, market rules, and reserves keeping liquid fuel, electricity, and gas available through disruptions and the transition to net zero.
Energy Singularity (能量奇点)
Energy Singularity (能量奇点) is a Shanghai-based commercial fusion startup founded in 2021, the first private fusion energy company in China, developing compact high-field tokamaks with high-temperature superconducting magnets.
Energy Spectrum Partners
Energy Spectrum Partners is a Dallas, Texas-based private equity firm investing in North American midstream energy infrastructure, with about $4.5 billion of equity raised since the mid-1990s.
Energy Star
Energy Star, also known as the Energy Star rating, is a voluntary US government labeling program launched by the EPA in 1992 that identifies energy-efficient products, homes, and buildings.
Energy storage
Energy storage, also called electricity storage, holds energy for later use, led worldwide in 2025 by lithium-ion batteries at 56% of capacity and pumped hydro at 43%.
Energy Storage Grand Challenge
The Energy Storage Grand Challenge (ESGC) is a US Department of Energy program announced in January 2020 to coordinate energy storage research, development, commercialization, and manufacturing.
Energy subsidy
An energy subsidy is any government action lowering energy costs, from direct cash payments to tax breaks and uncharged environmental damage; estimates range into the trillions of dollars.
Energy tank method
The energy tank method is a passivity-based control technique that couples a virtual energy reservoir to a robot controller, keeping the closed loop passive during physical human-robot interaction.
Energy Transfer
Energy Transfer is a Delaware limited partnership (NYSE: ET) and one of the largest American midstream companies, operating about 140,000 miles of pipeline across 44 states.
Energy Transfer LP
Energy Transfer LP is a Dallas-based master limited partnership founded in 1996, operating about 140,000 miles of pipeline across 44 states and owning the Dakota Access Pipeline.
Energy transformation
Energy transformation, also called energy conversion, is the process by which energy changes from one form into another, such as chemical energy becoming mechanical energy in a car engine.
Energy transition
The energy transition is the global shift from fossil fuels toward low-carbon energy, combining renewable electricity, electrification, efficiency, hydrogen, and some continued fossil fuel use.
Energy Trust Partners
Energy Trust Partners is a private equity firm making control-oriented investments in lower-middle-market upstream oil and gas companies, formed in 2002 and based in Dallas and New York.
Energy Union
The Energy Union is a European Union strategy launched by the Commission in February 2015 under the Juncker Commission to give consumers secure, sustainable, and affordable energy.
Energy Vault
Energy Vault is an American energy storage company in California, best known for its EVx gravity system that stores electricity by lifting and lowering heavy blocks.
Energy-based identification
Energy-based identification is a method of estimating robot dynamic parameters by fitting an energy model, developed by Gautier and Khalil in the late 1980s and 1990s.
Energy-based model
An energy-based model is a probabilistic model that attaches a scalar energy to each configuration, converting energies to probabilities through the Boltzmann form without explicit normalization.
Energy-converting hydrogenase B, subunit P
Energy-converting hydrogenase B, subunit P (EhbP; InterPro IPR019597, Pfam pfam10622, KEGG K14125) is a conserved small subunit of Ehb, a membrane-bound group 4 [NiFe] hydrogenase of methanogenic archaea that couples H2 oxidation to ferredoxin reduction and sodium-ion translocation for autotrophic CO2 assimilation.
Energy-dispersive X-ray diffraction
Energy-dispersive X-ray diffraction, also called white-beam XRD, is a technique in which a polychromatic X-ray beam and energy-discriminating detector record diffraction patterns at a fixed angle, suited to time-resolved and bulk studies.