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A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy equal to 3.6 megajoules (MJ) in SI units, which is the energy delivered by one kilowatt of power for one hour. Kilowatt-hours are a common billing unit for electrical energy supplied by electric utilities.
Energy; system unit code (alternative) symbol or abbrev. notes sample default conversion combinations SI: yottajoule: YJ YJ 1.0 YJ (2.8 × 10 17 kWh) zettajoule: ZJ ZJ 1.0 ZJ (2.8 × 10 14 kWh)
The unit of energy consumed is deemed to be 33.7 kilowatt-hours without regard to the efficiency of conversion of heat energy into electrical energy, also measured in kilowatt-hours (kWh). The equivalence of this unit to energy in a gallon of gasoline is true if and only if the heat engine, generating equipment, and power delivery to the car ...
A unit of electrical energy, particularly for utility bills, is the kilowatt-hour (kWh); [3] one kilowatt-hour is equivalent to 3.6 megajoules. Electricity usage is often given in units of kilowatt-hours per year or other periods. [4] This is a measurement of average power consumption, meaning the average rate at which energy is transferred ...
The energy content of ethanol is 76,100 BTU/US gal (5.89 kilowatt-hours per litre), compared to 114,100 BTU/US gal (8.83 kWh/L) for gasoline. (see chart above) A flex-fuel vehicle will experience about 76% of the fuel mileage MPG when using E85 (85% ethanol) products as compared to 100% gasoline. Simple calculations of the BTU values of the ...
1.0 YJ (2.8 × 10 17 kWh) zettajoule: ZJ ZJ 1.0 ZJ (2.8 × 10 14 kWh) exajoule: EJ EJ 1.0 EJ (2.8 × 10 11 kWh) petajoule: PJ PJ 1.0 PJ (280,000,000 kWh) terajoule: TJ TJ 1.0 TJ (280,000 kWh) gigajoule: GJ GJ 1.0 GJ (280 kWh) megajoule: MJ MJ 1.0 MJ (0.28 kWh) kilojoule: kJ kJ 1.0 kJ (240 cal) hectojoule: hJ hJ 1.0 hJ (24 cal) decajoule: daJ ...
Energy (system unit unit-code symbol or abbrev. notes sample default conversion combination output units SI: gigajoule: GJ GJ 1.0 GJ (280 kWh) megajoule: MJ MJ 1.0 MJ (0.28 kWh)
Spring power (clock spring), torsion spring: 0.0003 [38] 0.0006: Storage type Energy density by mass (MJ/kg) Energy density by volume (MJ/L) Peak recovery efficiency %