Understanding Energy Units of Measure

Term Definition
British Thermal Unit (BTU) The amount of heat needed to raise one pound of water by one degree Fahrenheit.
Therm (TH) Unit of heat equivalent to 100,000 British Thermal Units (BTU’s).
Dekatherm (DTH) 10 therms.
Cubic Feet (CF) The amount of gas required to fill a volume of one cubic foot (under stated conditions of temperature, pressure and water vapor).
Hundred Cubic Feet (CCF) 100 cubic feet of gas.
Thousand Cubic Feet (MCF) 1,000 cubic feet of gas.
Watt The basic unit of electricity demand, equivalent to one joule per second.
Kilowatt (KW) The most common unit of electricity demand, 1,000 watts.
Kilowatt Hour (KWH) Electricity usage equal to one KW of demand over a time period of one hour.
Megawatt (MWH) 1,000 KWH.

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