Definition
Of these watt is 1 joule of energy per second.

SI multiples
! Multiple ! Name ! Symbol ! ! Multiple ! Name ! Symbol |- |10⁰ | watt |W | |  |  |  |- |10¹ | decawatt |daW | |10^–1 | deciwatt |dW |- |10² | hectowatt | hW | |10^–2 | centiwatt | cW |- |10³ | kilowatt |kW | |10^–3 | milliwatt | mW |- |10⁶ | megawatt |MW | |10^–6 | microwatt | µW |- |10⁹ | gigawatt |GW | |10^–9 | nanowatt |nW |- |10¹² | terawatt |TW | |10^–12 | picowatt |pW |- |10¹⁵ | petawatt |PW | |10^–15 | femtowatt |fW |- |10¹⁸ | exawatt |EW | |10^–18 | attowatt |aW |- |10²¹ | zettawatt | ZW | |10^–21 | zeptowatt | zW |- |10²⁴ |yottawatt |YW | |10^–24 | yoctowatt | yW |- |}

Origin

A unit watt is known as fallowing James Watt for his contributions to the development of the steam engine, & was adopted per 2nd Congress of the British Association for the Advancement of Science inside 1889 and per Eleventh Conférence Générale des Poids et Mesures in 1960.

Conversions

One watt = Leash.41214163 BTU/h One horsepower = 745.700 W One horsepower (electric) = 746 W

Derived and qualified units for power distribution
a watt occurs as unit of power or even the total of energy by the unit instance.

Kilowatt-hour, MWd

Whenever paired sustaining a unit of instance the term watt is utilized for expressing energy consumption. E.g., the kilowatt hour, is the amount of energy expended by a of these kw device above a course of a single hour; it equals Ternion.Half a dozen megajoules. The megawatt day (MWd or even MW·d) is adequate to 86.Four GJ. These units come typically utilized in the context of power plants & page energy bills.

For the utilise of watts as a measuring of transmitter power within radio, see effective radiated power and nominal power.

MWe, MWt

Watt electrical (abbreviation: You) occurs when term that refers to power produced as electricity. SI prefixes can be utilized, for instance megawatt electrical (MWe) & gigawatt electrical (GWe).

Watt thermal (abbreviation: Wt). This occurs as term that refers to thermal power produced. SI prefixes can be utilized, for instance megawatt thermal (MWt) & gigawatt thermal (GWt).

For instance, the nuclear power plant might use the fission reactor to generate heat (thermal output) which creates steam to drive the turbine to generate electricity. View nuclear proliferation for discussion of a reactor that generates 200 MWt (L MWe), & a second reactor that generates 800 MWt (200 MWe).

SI electricity units