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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)
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Location Consumption (GWh/yr) Year Source Population As of Consumption per capita kWh/yr Watts — World 25,343,000: 2021 [4]: EIA: 7,909,295,104: 2021 [5]: 3,204: ...
World electric generation by country and source in 2022 [1] Annual world electricity net generation [2]. This is a list of countries and dependencies by annual electricity production.
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.
1 kWh = 3,600 kWs = 1,000 Wh = 3.6 million W·s = 3.6 million J. Electric and electronic devices consume electric energy to generate desired output (light, heat, motion, etc.). During operation, some part of the energy is lost depending on the electrical efficiency. [5] Electricity has been generated in power stations since 1882. [6]
The convert template has 1 square mile = 2,589,988.110336 square meters. Values for the fundamental physical constants come from the NIST Reference on Constants, Units, and Uncertainty , either the 2010 or the 2014 version.
1 W average = 8.76 kWh per year (365 × 24 Wh per year) Total energy consumption per capita Country/Territory 2003 [3] ... Singapore: 6455.7: 271.14: 8595.2 4833.4