Coal

Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.

Industry: Energy

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Coal

Government-owned stocks

Energy; Coal

Oil stocks owned by the national government and held for national security. In the United States, these stocks are known as the Strategic Petroleum Reserve.

Green pricing

Energy; Coal

In the case of renewable electricity, green pricing represents a market solution to the various problems associated with regulatory valuation of the nonmarket benefits of renewables. Green pricing ...

Greenhouse effect

Energy; Coal

The result of water vapor, carbon dioxide, and other atmospheric gases trapping radiant (infrared) energy, thereby keeping the earth's surface warmer than it would otherwise be. Greenhouse gases ...

Greenhouse gases

Energy; Coal

Those gases, such as water vapor, carbon dioxide, nitrous oxide, methane, hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulphur hexafluoride, that are transparent to solar (short-wave) ...

Gross additions to construction work in progress for the month

Energy; Coal

This amount should include the monthly gross additions for an electric plant in the process of construction.

Gross company-operated production

Energy; Coal

Total production from all company-operated properties, including all working and nonworking interests.

Gross domestic product (gdp)

Energy; Coal

The total value of goods and services produced by labour and property located in the United States. As long as the labour and property are located in the United States, the supplier (that is, the ...