A kilowatt hour (kWh) is a unit of energy used to measure electricity consumption over time. It is calculated by multiplying the power used in kilowatts (kW) by the number of hours the device is used. Electricity prices vary by region and can be affected by taxes, distribution costs, and government regulations. In the US, the average residential cost of a kWh is 9.83 cents, but it can range from 6.2 cents in Wyoming to 25.12 cents in Hawaii. Smart meter technology and time-of-use pricing are expected to become more prevalent in the future.
A kilowatt hour is a unit of energy and the typical way electricity is measured. A kilowatt (kW) is 1,000 watts (w), and a kilowatt-hour refers to the use of a device or set of devices using 1,000 watts for one hour. Using a 100-watt light bulb for 10 hours would equal 1 kilowatt-hour (kWh), as would using a 10,000-watt machine for 6 minutes.
Kilowatt e Kilowatt hour
A watt or kilowatt is a measure of power, or how much electricity a device is using at any given time. This is useful information, because it can be used to compare average energy consumption; an 11-watt compact fluorescent (CFL) bulb could produce the same amount of light as a 100-watt incandescent bulb, making it more energy efficient. Like knowing the average miles per gallon (or kilometers per liter) a car gets, devices can be compared without regard to how long they’ve been used.
Energy is a measure of power over a certain period of time. Electric companies use the kilowatt hour because energy use is cumulative. Someone using an 11-watt CFL is not paying for the 11 watts that bulb uses in any given instant, but rather how much energy that bulb uses in a month. To determine this cost, you multiply the kilowatts a device uses by how many hours it is used to get kWh, which is then multiplied by the price of electricity per kWh.
watt ÷ 1,000 = kWh
kWh × operating hours × tariff = cost
Electricity tariffs
Electricity prices are measured in kilowatts used per hour and the rate tends to fluctuate over time, both over the long term, such as over a week or month, but also over the course of a single day at a commercial level throughout the year. wholesale. In some countries and regions, electricity prices may vary based on the time of day when energy is used; in many other places, however, prices are either set by the government or based on average cost over time. However, smart meter technology and “time of use” pricing are expected to become more prevalent over time.
Prices also vary widely by region, often based on how much it costs to generate and distribute power, as well as taxes and other charges. In the United States, for example, the average residential cost of a kilowatt-hour in Wyoming is 6.2 cents and as high as 25.12 cents in Hawaii.
Electric rates in the United States
Here are the costs per kilowatt hour by US region in 2010:
Region
Average residential cost of a kilowatt hour
US average
9.83
Non-contiguous Pacific
19.94
New England
14.44
Middle Atlantic
13.80
South Atlantic
10.08
North East Central
9.12
Contiguous Pacific
9.07
Southeast center
8.20
West South Central
8.00
The mountain
7.84
West North Central
7.80
Region Definitions:
Non-contiguous Pacific: Alaska, Hawaii
New England: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
Mid-Atlantic: New Jersey, New York, Pennsylvania
South Atlantic: Delaware, District of Columbia, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, West Virginia
Mid-northeast: Illinois, Indiana, Michigan, Ohio, Wisconsin
Pacifico contiguo: California, Oregon, Washington
East South Central: Alabama, Kentucky, Mississippi, Tennessee
West South Central: Arkansas, Louisiana, Oklahoma, Texas
Mountain: Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming
Central-set: Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota
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