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

Operable capacity

Energy; Coal

The amount of capacity that, at the beginning of the period, is in operation; not in operation and not under active repair, but capable of being placed in operation within 30 days; or not in ...

Qualifying facility (QF)

Energy; Coal

A cogeneration or small power production facility that meets certain ownership, operating, and efficiency criteria established by the Federal Energy Regulatory Commission (FERC) pursuant to the ...

Site-specific information dsm programme assistance

Energy; Coal

ADSM (demand-side management) assistance programme that provides guidance on energy efficiency and load management options tailored to a particular customer's facility; it often involves an on-site ...

Mainline conveyor

Energy; Coal

Underground mining equipment. Usually a permanent installation that carries coal to the surface.

Operable generators/units

Energy; Coal

Electric generators or generating units that are available to provide power to the grid or generating units that have been providing power to the grid but are temporarily shut down. This includes ...

Quality or grade (of coal)

Energy; Coal

An informal classification of coal relating to its suitability for use for a particular purpose. Refers to individual measurements such as heat value, fixed carbon, moisture, ash, sulfur, major, ...