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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.
Energy-dispersive X-ray fluorescence
Energy-dispersive X-ray fluorescence (EDXRF) is an elemental analysis technique that excites a sample with X rays and identifies its elements from their emitted X-ray energies.
Energy-dispersive X-ray spectroscopy
Energy-dispersive X-ray spectroscopy, also called EDX or EDS, identifies the elemental composition of a sample by measuring characteristic X-rays emitted under a focused electron beam.
Energy-efficient train driving
Energy-efficient train driving, also called eco-driving or EETC, is the practice of driving a train along a speed trajectory that minimizes traction energy while still meeting the timetable's running time.
Energy-filtered transmission electron microscopy
Energy-filtered transmission electron microscopy, also called electron spectroscopic imaging, is a TEM technique that images electrons of a chosen energy loss to map specific elements at better than 1 nm resolution.
Energy-loss near-edge structure
Energy-loss near-edge structure (ELNES) is the fine structure on EELS ionization edges within about 50 eV of the edge onset, reporting an atom's bonding environment and oxidation state.
Energy-related Products Directive
The Energy-related Products Directive, Directive 2009/125/EC of 2009, is a European Union framework law letting the Commission set ecodesign requirements for energy-using products, repealed in 2024.
Energy-transfer [2+2] cycloaddition
Energy-transfer [2+2] cycloaddition is a photochemical reaction in which a visible-light photocatalyst transfers triplet energy to an alkene, allowing the otherwise UV-only, thermally forbidden formation of cyclobutanes.
Energy–momentum relation
The energy–momentum relation, also called the relativistic energy–momentum equation, is the special relativity formula E² = (pc)² + (mc²)² connecting a particle's energy, momentum, and rest mass.
Energy–time uncertainty relation
The energy–time uncertainty relation is a set of inequalities in quantum mechanics connecting energy spread to lifetimes and evolution times, with no time operator involved.
ENERGY2MOB trial
ENERGY2MOB (NCT06988904) is a randomised controlled trial in Berguedà, Catalonia, testing an 8-week group nutrition, physical activity, and emotional well-being programme for 5-10% weight loss in adults with BMI 27-40.
EnergyAustralia
EnergyAustralia is an Australian energy retailer and generator headquartered in Melbourne and wholly owned by Hong Kong-based CLP Group, serving more than 2.44 million electricity and gas customer accounts across five states and territories.
Energylandia
Energylandia is Poland's largest amusement park, opened 14 July 2014 in Zator by Marek Goczał, with 133 attractions on 90 hectares, about 20 roller coasters including Hyperion and Zadra, and 2.5 million visitors in 2023.
EnergySolutions Clive facility
The EnergySolutions Clive facility is a commercial disposal site for low-level radioactive waste near Clive, Utah, and one of four active commercial facilities in the United States.
Enerkem
Enerkem is a Montreal-based Canadian waste-to-biofuels company founded in 2000 by Esteban and Vincent Chornet, whose gasification process turns non-recyclable municipal waste into methanol and ethanol.
EnerSys
EnerSys is an American manufacturer of industrial batteries, chargers, and power equipment, headquartered in Reading, Pennsylvania, serving over 10,000 customers in more than 100 countries.
EnerVenue
EnerVenue Holdings, Ltd. is a Fremont, California energy storage company founded in 2020 by Stanford professor Yi Cui that makes NASA-derived nickel-hydrogen batteries for long-duration grid electricity storage.
Enes Kanter Freedom
Enes Kanter Freedom, born Enes Kanter (1992), Turkish-American NBA center (2011-2022, Jazz, Thunder, Knicks, Celtics, Blazers), human rights activist, who in 2026 declared for the WNBA draft and was banned from Chicago Sky home games.
Enes Ünal
Enes Ünal (born 1997, Bursa) is a Turkish striker, youngest Süper Lig goalscorer, ex-Manchester City, Villarreal, Getafe (36 goals) and Bournemouth, returned to Getafe 2026 after two ACL tears.
Enetarzi
Enentarzi, also written En-entar-zi, was ruler (ensi) of the Sumerian city-state of Lagash in the Early Dynastic IIIb period, after serving as high administrator of the temple of Ningirsu at Girsu; his son Lugalanda succeeded him.
EnEV
The Energieeinsparverordnung (EnEV) was Germany's statutory ordinance regulating building energy performance, in force from February 2002 until it was absorbed into the Buildings Energy Act (GEG) in 2020.