U.S. Energy Information Administration logo
Skip to sub-navigation

Glossary

This page has no sub-navigation. Skip to page content.
A B C D E F G H I J K L M N O P Q R S T U V W XYZ

Browse terms related to these fuel groups:alternative fuels|coal|electricity|natural gas|nuclear|petroleum|renewable

Motor gasoline

Motor gasoline (finished):  A complex mixture of relatively volatile hydrocarbons with or without small quantities of additives, blended to form a fuel suitable for use in spark-ignition engines. Motor gasoline, as defined in ASTM Specification D 4814 or Federal Specification VV-G-1690C, is characterized as having a boiling range of 122 to 158 degrees Fahrenheit at the 10 percent recovery point to 365 to 374 degrees Fahrenheit at the 90 percent recovery point. Motor Gasoline includes conventional gasoline; all types of oxygenated gasoline, including gasohol; and reformulated gasoline, but excludes aviation gasoline. Note: Volumetric data on blending components, such as oxygenates, are not counted in data on finished motor gasoline until the blending components are blended into the gasoline.

Motor gasoline blending:  Mechanical mixing of motor gasoline blending components, and oxygenates when required, to produce finished motor gasoline. Finished motor gasoline may be further mixed with other motor gasoline blending components or oxygenates, resulting in increased volumes of finished motor gasoline and/or changes in the formulation of finished motor gasoline (e.g., conventional motor gasoline mixed with MTBE to produce oxygenated motor gasoline).

Motor gasoline blending components:  Naphthas (e.g., straight-run gasoline, alkylate, reformate, benzene, toluene, xylene) used for blending or compounding into finished motor gasoline. These components include reformulated gasoline blend stock for oxygenate blending (RBOB) but exclude oxygenates (alcohols, ethers), butane, and pentanes plus. Note Oxygenates are reported as individual components and are included in the total for other hydrocarbons, hydrogens, and oxygenates.

Top
Statistics
Analysis
Tools
Education
News

Petroleum & Other Liquids

Crude oil, gasoline, heating oil, diesel, propane, and other liquids including biofuels and natural gas liquids.

Natural Gas

Exploration and reserves, storage, imports and exports, production, prices, sales.

Electricity

Sales, revenue and prices, power plants, fuel use, stocks, generation, trade, demand & emissions.

Coal

Reserves, production, prices, employment and productivity, distribution, stocks, imports and exports.

Nuclear & Uranium

Uranium fuel, nuclear reactors, generation, spent fuel.

Renewable & Alternative Fuels

Includes hydropower, solar, wind, geothermal, biomass and ethanol.

EIA Survey Forms

Forms EIA uses to collect energy data including descriptions, links to survey instructions, and additional information.

Total Energy

Comprehensive data summaries, comparisons, analysis, and projections integrated across all energy sources.

U.S. States

State energy information, including overviews, rankings, data, and analyses.

International

International energy information, including overviews, rankings, data, and analyses.

Environment

Greenhouse gas data, voluntary reporting, electric power plant emissions.

Data Tools, Apps, & Maps

Tools to customize searches, view specific data sets, study detailed documentation, and access time-series data.

Open Data

EIA's free and open data available as API, Excel add-in, bulk files, and widgets

EIA Beta

Come test out some of the products still in development and let us know what you think!

Open Source Code

EIA's open source code, available on GitHub.

RSS Feeds

Subscribe to feeds for updates on EIA products including Today in Energy and What's New.