Energy terminology · MLC-0117

Energy terms: U (59)

• ULCCUltra Large Crude Carrier.
• Ultimate customerA customer that purchases electricity for its own use and not for resale.
• Ultra-low sulfur diesel (ULSD) fuelDiesel fuel containing a maximum 15 parts per million (ppm) sulfur.
• UltravioletElectromagnetic radiation in the wavelength range of 4 to 400 nanometers.
• Unaccounted for (crude oil)Represents the arithmetic difference between the calculated supply and the calculated disposition of crude...
• Unaccounted for (natural gas)Represents differences between the sum of the components of natural gas supply and the sum of components of...
• UnbundlingSeparating vertically integrated monopoly functions into their component parts for the purpose of separate...
• Uncompleted wells, equipment, and facilities costsThe costs incurred to (1) drill and equip wells that are not yet completed, and (2) acquire or construct...
• Unconsolidated entityA firm directly or indirectly controlled by a parent but not consolidated with the parent for purposes of...
• Unconventional oil and natural gas productionAn umbrella term for oil and natural gas that is produced by means that do not meet the criteria for...
• Underground mineA mine where coal is produced by tunneling into the earth to the coalbed, which is then mined with...
• Underground mining equipment• A coal-cutting machine is used in conventional mining to undercut, top cut, or shear the coal face so that...
• Underground mining methods• A drift mine is driven horizontally into coal that is exposed or accessible in a hillside. In a hydraulic...
• Underground natural gas storageThe use of sub-surface facilities for storing natural gas for use at a later time. The facilities are usually...
• Underground natural gas storage injectionsNatural gas put (injected) into underground storage reservoirs.
• Underground storageThe storage of natural gas in underground reservoirs at a different location from which it was produced.
• Underground storage withdrawalsNatural gas removed from underground storage reservoirs.
• Undifferentiated/unspecified reserves and productionReserves and production that are not separable by FERC production areas or by states. Undifferentiated and...
• Undiscovered recoverable reserves (crude oil and natural gas)Those economic resources of crude oil and natural gas, yet undiscovered, that are estimated to exist in...
• Undiscovered resources (coal)Unspecified bodies of coal surmised to exist on the basis of broad geologic knowledge and theory...
• Unfilled requirementsRequirements not covered by usage of inventory or supply contracts in existence as of January 1 of the survey...
• Unfinished oilsAll oils requiring further processing, except those requiring only mechanical blending. Unfinished oils are...
• Unfractionated streamsMixtures of unsegregated natural gas liquid components, excluding those in plant condensate. This product is...
• Unglazed solar collectorA solar thermal collector that has an absorber that does not have a glazed covering. Solar swimming pool...
• Uniform system of accountsPrescribed financial rules and regulations established by the Federal Energy Regulatory Commission for...
• Union of Soviet Socialist RepublicsA political entity that consisted of 15 constituent republics: Armenia, Azerbaijan, Belarus, Estonia...
• Unit priceTotal revenue derived from the sale of product during the reference month divided by the total volume sold...
• Unit value, consumptionTotal price per specified unit, including all taxes, at the point of consumption.
• Unit value, wellheadThe wellhead sales price, including charges for natural gas plant liquids subsequently removed from the gas...
• United StatesThe 50 States and the District of Columbia. Note: The United States has varying degrees of jurisdiction over...
• Unprocessed gasNatural gas that has not gone through a processing plant.
• Unregulated entityFor the purpose of EIA's data collection efforts, entities that do not have a designated franchised service...
• Unscheduled outage servicePower received by a system from another system to replace power from a generating unit forced out of service.
• UprateAn increase in available electric generating unit power capacity due to a system or equipment modification...
• Uranium concentrateA yellow or brown powder obtained by the milling of uranium ore, processing of in situ leach mining...
• Uranium depositA discrete concentration of uranium mineralization that is of possible economic interest.
• Uranium endowmentThe uranium that is estimated to occur in rock with a grade of at least 0.01 percent U_3O_8. The estimate of...
• Uranium hexafluoride (UF_6)A white solid obtained by chemical treatment of U_3O_8and which forms a vapor at temperatures above 56...
• Uranium importationThe actual physical movement of uranium from a location outside the United States to a location inside the...
• Uranium millA plant where uranium is separated from ore taken from mines.
• Uranium mill tailingsThe sand-like materials left over from the separation of uranium from its ore. More than 99 percent of the...
• Uranium Mill Tailings Radiation Control Act (UMTRA) of 1978The act that directed the Department of Energy to provide for stabilization and control of the uranium mill...
• Uranium oreRock containing uranium mineralization in concentrations that can be mined economically, typically one to...
• Uranium oxideUranium concentrate or yellowcake. Abbreviated as U_3O_8.
• Uranium propertyA specific piece of land with uranium reserves that is held for the ultimate purpose of economically...
• Uranium reservesEstimated quantities of uranium in known mineral deposits of such size, grade, and configuration that the...
• Uranium resource categories (international)Three categories of uranium resources defined by the international community to reflect differing levels of...
• Uranium (U)A heavy, naturally radioactive, metallic element (atomic number 92). Its two principally occurring isotopes...
• U.S. refiner acquisition cost of imported crude oilThe average price paid by U.S. refiners for imported, that is, non-U.S., crude oil booked into their...
• USACE (sometimes shortened to USCE in EIA tables)U.S. Army Corps of Engineers.
• Usage agreementContracts held by enrichment customers that allow feed material to be stored at the enrichment plant site in...
• USBRUnited States Bureau of Reclamation.
• Used and usefulA concept used by regulators to determine whether an asset should be included in the utility's rate base...
• Useful thermal outputThe thermal energy made available in a combined-heat-and-power system for use in any industrial or commercial...
• U.S.S.R.See Union of Soviet Socialist Republics (U.S.S.R.) .
• Utility demand-side management costsThe costs incurred by the utility to achieve the capacity and energy savings from the Demand-Side Management...
• Utility distribution companiesThe entities that will continue to provide regulated services for the distribution of electricity to...
• Utility generationGeneration by electric systems engaged in selling electric energy to the public.
• Utility-sponsored conservation programAny program sponsored by an electric and/or natural gas utility to review equipment and construction features...

59 of 2,500 terms in Energy terminology (MLC-0117). Request the full dataset.