Kilowatt hour - Revision history

Designing Buildings at 08:20, 19 December 2020

2020-12-19T08:20:05Z

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	* Watt.		* Watt.

−	[[Category:~~Standards_/_measurements~~]] [[Category:~~DCN_Standard~~]] [[Category:~~Products_~~/~~_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Standards_/_measurements]] [[Category:Products_/_components]]

Editor at 15:06, 3 August 2019

2019-08-03T15:06:20Z

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	* Ampere.		* Ampere.
		+	* Conductor.
	* Domestic micro-generation.		* Domestic micro-generation.
	* Electricity.		* Electricity.
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	* Watt.		* Watt.

−	[[Category:Standards_/_measurements]] [[Category:Products_/_components]]	+	[[Category:Standards_/_measurements]] [[Category:DCN_Standard]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Editor at 17:37, 5 July 2019

2019-07-05T17:37:13Z

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	* Energy.		* Energy.
	* Glossary of electrical terms.		* Glossary of electrical terms.
		+	* Portable Appliance Testing (PAT).
	* Power.		* Power.
	* Power generation.		* Power generation.

Editor at 14:29, 8 March 2019

2019-03-08T14:29:13Z

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	* Smart meter.		* Smart meter.
	* The future of electricity in domestic buildings, a review.		* The future of electricity in domestic buildings, a review.
		+	* The UK’s low-carbon future is increasingly electric.
	* Voltage.		* Voltage.
	* Watt.		* Watt.

	[[Category:Standards_/_measurements]] [[Category:Products_/_components]]		[[Category:Standards_/_measurements]] [[Category:Products_/_components]]

Editor at 12:44, 17 October 2018

2018-10-17T12:44:36Z

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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

		+	* Ampere.
	* Domestic micro-generation.		* Domestic micro-generation.
	* Electricity.		* Electricity.

Designing Buildings at 12:31, 17 October 2018

2018-10-17T12:31:29Z

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−	[[File:~~British gas smart meter~~.jpg]]	+	[[File:British_gas_smart_meter.jpg\|link=File:British_gas_smart_meter.jpg]]

−	A kilowatt hour (kWh or kW h) is a unit ~~measure~~ of energy that is equivalent to 1 ~~kilowatt~~ (kW) of energy being transmitted or used ~~at a constant rate~~ for one hour. ~~Kilowatt~~ hour is commonly used by utility companies ~~as a unit~~ for calculating and communicating energy bills to consumers.	+	A watt (W) is a unit of electrical power. One watt represents a current of one ampere with a voltage of one volt.
		+
		+	A kilowatt hour (kWh or kW h) is a unit of energy that is equivalent to 1,000 watts (1 kW) of energy being transmitted or used for one hour. The kilowatt hour is commonly used by utility companies for pricing, calculating and communicating electricity energy bills to consumers.

	One kilowatt hour is equal to 3.6 megajoules – the amount of converted energy if work is done at an average rate of 1 kW per hour.		One kilowatt hour is equal to 3.6 megajoules – the amount of converted energy if work is done at an average rate of 1 kW per hour.

−	The difference between a kW and a kWh is that a kW is the ~~power~~ required ~~to use~~ an appliance, whereas a kWh is the amount of energy that is actually used over a period of time.	+	The difference between a kW and a kWh is that a kW is the energy required for an appliance to function, whereas a kWh is the amount of energy that is actually used over a period of time.

−	For example, a 100 W light bulb would take 10 hours to ~~use up~~ 1 kWh of energy. A 50 W electrical appliance that is used at a constant rate for 20 hours would use 1 kWh of energy. A 2 kW electrical appliance would use 1 kWh in 30 minutes.	+	For example, a 100 W light bulb would take 10 hours to consume 1 kWh of energy. A 50 W electrical appliance that is used at a constant rate for 20 hours would use 1 kWh of energy. A 2 kW electrical appliance would use 1 kWh in 30 minutes.

−	To calculate the cost of running an electrical appliance, the power consumption in kWh is ~~multiplied by the time being used, and then~~ multiplied by the price per kWh. The unit price of electricity often varies depending on the rate of consumption, the time of day, and the location.	+	To calculate the cost of running an electrical appliance, the power consumption in kWh is multiplied by the price per kWh. The unit price of electricity often varies depending on the rate of consumption, the time of day, and the location.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

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[[File:British gas smart meter.jpg]]

A kilowatt hour (kWh or kW h) is a unit measure of energy that is equivalent to 1 kilowatt (kW) of energy being transmitted or used at a constant rate for one hour. Kilowatt hour is commonly used by utility companies as a unit for calculating and communicating energy bills to consumers.

One kilowatt hour is equal to 3.6 megajoules – the amount of converted energy if work is done at an average rate of 1 kW per hour.

The difference between a kW and a kWh is that a kW is the power required to use an appliance, whereas a kWh is the amount of energy that is actually used over a period of time.

For example, a 100 W light bulb would take 10 hours to use up 1 kWh of energy. A 50 W electrical appliance that is used at a constant rate for 20 hours would use 1 kWh of energy. A 2 kW electrical appliance would use 1 kWh in 30 minutes.

To calculate the cost of running an electrical appliance, the power consumption in kWh is multiplied by the time being used, and then multiplied by the price per kWh. The unit price of electricity often varies depending on the rate of consumption, the time of day, and the location.

= Related articles on Designing Buildings Wiki =

* Domestic micro-generation.
* Electricity.
* Energy.
* Glossary of electrical terms.
* Power.
* Power generation.
* Smart meter.
* The future of electricity in domestic buildings, a review.
* Voltage.
* Watt.

[[Category:Standards_/_measurements]] [[Category:Products_/_components]]