Energy in the United States

Last updated

Overall energy consumption in 2021 US Energy Consumption 2021 Major.png
Overall energy consumption in 2021

Energy in the United States is obtained from a diverse portfolio of sources, although the majority came from fossil fuels in 2021, as 36% of the nation's energy originated from petroleum, 32% from natural gas, and 11% from coal. Electricity from nuclear power supplied 8% and renewable energy supplied 12%, which includes biomass, wind, hydro, solar and geothermal. [1]

Contents

Energy figures are measured in BTU, with 1 BTU equal to 1.055 kJ and 1 quadrillion BTU (1 quad) equal to 1.055 EJ. Because BTU is a unit of heat, sources that generate electricity directly are multiplied by a conversion factor to equate them with sources that use a heat engine. [2]

The United States was the second-largest energy producer and consumer in 2021 after China. [3] The country had a per capita energy consumption of 295 million BTU (311 GJ), ranking it tenth in the world behind Canada, Norway, and several Arabian nations. [3] Consumption was mostly for industry (33%) and transportion (28%), with use in homes (21%) and commercial buildings (18%) making up the remainder. [4] [5]

The United States' portion of the electrical grid in North America had a nameplate capacity of 1,213 GW and produced 3,988 TWh in 2021, using 37% of primary energy to do so. [6] [7] The country is the second-largest producer and consumer of electricity, behind China. [3] Natural gas overtook coal as the dominant source for electric generation in 2016. While coal use has been dropping, it remained larger than either nuclear or renewables. [6]

History

Per capita energy use by source US Energy Consumption historical percap.png
Per capita energy use by source
The percentage of energy use by source US Energy Consumption historical percent.png
The percentage of energy use by source

From its founding until the late 19th century, population and energy use in the United States both increased by about 3% per year, [8] [9] resulting in a relatively constant per capita energy use of 100 million BTU. Wood made up the majority of this until near the end of the 1800s, meaning the average American burned eight tons of wood each year. [10]

The Industrial Revolution in the United States saw an increased use of coal. By the late 1800s, it surpassed wood as the major source of energy, as it was cheaper for those living in cities. Lighting, heating and transportation could all be fueled by coal. [11] Between 1925 and 1975, coal use was more stagnant, although it dominated the growing electricity sector. [12] Petroleum and natural gas took its place, as car ownership doubled in the two decades after the war, [13] and as the number of pipelines rose dramatically. [14]

During the first half of the 20th century, per capita energy use doubled to 200 million BTU, and reached 300 million BTU by the late 60s. After a peak of 360 million BTU in 1979, per capita consumption generally declined, and dipped below 300 million BTU in 2020. [15] In comparison, the world average increased from 68 to 74 million BTU (72 to 78 GJ) per person between 1980 and 2020. [3]

Domestic oil production peaked in 1970 and did not recover for 40 years. However, oil imports allowed consumption to double. Oil represented the vast majority of net imports during this time. [16] Increased reliance on imported oil coincided with the 1973 oil crisis.

Total imports peaked in 2005, when they represented 30% of total consumption. A consistent decline occurred over the next 15 years, as oil production doubled and domestic use receded. This allowed the United States to be a net exporter of energy for the first time in 70 years. As of 2021, the US net exports 3.9% of energy production. [16]

Around 2010, many other trends began to reverse. By 2020, improvements in fracking had allowed natural gas production to increase by more than half, [17] while coal decreased by half.

Renewables in the 20th century consisted mainly of hydro and wood. Hydro power had been relatively constant since 1970, while wood saw a bump in 1980. Between 2000 and 2020, wind, solar and biofuels increased by a factor of ten. By 2020, wind had surpassed hydro, and biofuels had surpassed wood. [18]

Summary

US energy consumption
by source (2021) [1]
Source % of source
Nuclear 8%100% Electricity
Renewable
12%		 6.9% Residential
 2.6% Commercial
19.6% Industrial
12.3% Transport
58.6% Electricity
Natural gas
32%		15.4% Residential
10.8% Commercial
33.4% Industrial
 3.9% Transport
36.5% Electricity
Coal
11%		 0.1% Commercial
 9.8% Industrial
90.0% Electricity
Petroleum
36%		 2.6% Residential
 2.4% Commercial
25.0% Industrial
69.3% Transport
 0.6% Electricity
US electricity
by source and sector (2021)
SourceElectricitySector
22.2% Nuclear
19.5% Renewable
31.7% Natural gas
26.0% Coal
 0.6% Petroleum

Sales
35%

Losses
65%

38.9% Residential
34.9% Commercial
26.0% Industrial
0.02% Transport
US energy flow, 2022. Note the loss of waste energy due to the nature of heat engines. US Energy 2022.png
US energy flow, 2022. Note the loss of waste energy due to the nature of heat engines.
US energy consumption
by sector (2021)
Sector % of sector
Residential
21%		 4.0% Renewable
23.5% Natural gas
 4.5% Petroleum
68.0% Electricity
Commercial
18%		 1.8% Renewable
19.7% Natural gas
 0.1% Coal
 4.8% Petroleum
73.6% Electricity
Industrial
33%		 7.3% Renewable
32.6% Natural gas
 3.2% Coal
27.2% Petroleum
29.7% Electricity
Transport
  28% [19] 		 5.5% Renewable
 4.5% Natural gas
89.8% Petroleum
0.2% Electricity

Primary energy production

Overall energy sources, 2021. US Energy Production 2021 Major.png
Overall energy sources, 2021.

The United States is the world's second-largest producer of energy. It produces 16% of the world's energy, about three-fourths as much as China. [3] Since 2019, the country has been a net exporter of energy. In 2021, 97.8 quads were produced and net exports were 3.9% of production. [16]

Fossil fuels

Fossil fuels have long produced most energy in the US, currently accounting for 79% of total production [20] and 61% of electric generation. [12] Although costs for some fossil fuels are declining, renewables are becoming cheaper faster. [21] Despite this, use of fossil fuels has remained near 80% for the past 30 years. [20]

The vast majority of carbon emissions in the US came from fossil fuels. [22] The largest sources for carbon pollution from energy were petroleum (46%), natural gas (35%) and coal (19%), [23] and of petroleum, motor gasoline (21%) and diesel (12%) were the largest contributors. As gas has been replacing coal, emissions from the two combined have declined from a peak in 2008, down 25% as of 2021. During the same time frame, petroleum declined by only 17%.

Coal

Coal made up 11% of production in 2021, [20] 90% of which went to producing electricity. [12] Coal electrified rapidly throughout the 50s, 60s and 70s and half of annual electricity was from coal until the 2010s. Coal peaked in 2006, when it represented a third of total energy production. During the 2010s it underwent a steady decline, mostly being replaced by natural gas. In contrast, net exports have remained near 2 quads in the same time period, but this now amounts to 17% of total production. [24]

The decline of coal has many factors, including the aforementioned rise of natural gas, the closing of old plants, and environmental regulations. [25] Coal supply has not become an issue, as the US has the largest coal reserve in the world, 40% larger than Russia. [3]

The first DC plant in the US was a coal plant in New York City, opened in 1882. The first AC plant was a coal plant in Ehrenfeld, Pennsylvania, opened in 1902. [26] Among the largest plants still operating is the James H. Miller Jr. Electric Generating Plant in West Jefferson, Alabama [27] and among the oldest is the James E. Rogers Energy Complex in Mooresboro, North Carolina. [28]

Natural gas

US natural gas production, imports, and exports US Natural Gas.webp
US natural gas production, imports, and exports
Natural gas production by field Natural gas production and price.webp
Natural gas production by field

Dry natural gas was 36% of production in 2021, making it the largest source of energy in the US. [20] It is also the largest electricity source, making up 38% of generation. [12] Natural gas surpassed coal for production in 2011 and for generation in 2016. Between 2006 and 2022, the US has gone from net importing 4 quads of natural gas to exporting 4 quads. [24]

The United States has been the world's largest producer of natural gas since 2011, when it surpassed Russia. However, the US ranks 7th in proven reserves. [3] Differences in supply explain why gas is cheaper in the US than it is in Europe. [29]

Among the largest natural gas power plants in the US is West County Energy Center in Palm Beach County, Florida. [30] Philadelphia had the first natural gas distributor in the US. [31]

Natural gas liquids are liquid hydrocarbons obtained from natural gas fields. Production has tripled from 2000 to 2022, now making up 9% of fossil fuels. [20] The US leads the world in NGL production, ahead of Saudi Arabia. [3]

During the 2023-24 winter heating season in the United States, natural gas inventories ended at 2,290 billion cubic feet (Bcf), 39% above the five-year average, due to mild weather resulting in reduced consumption. Withdrawals from storage were approximately 1,500 Bcf, lower than the usual 2,000 Bcf. By March 2024, the Henry Hub spot price had decreased to $1.50 per million British thermal units (MMBtu), significantly below the forecasted $3.10/MMBtu, with expectations of prices staying below $2.00/MMBtu until the second half of 2024, averaging $2.20/MMBtu for the year [32]

Petroleum

US oil production, imports, and exports US oil production, imports, & exports.webp
US oil production, imports, and exports

Crude oil made up 24% of production in 2021. [20] Oil has more than doubled from a slump in the early 2000s, even surpassing its previous peak in 1970. Imports have declined during the same time period, but the US still net imports 20% of consumption. [24]

The US has been the largest producer of crude oil since 2018, ahead of Saudi Arabia. [3] Texas produces far more oil than any other state. [33]

Nuclear

Cherenkov radiation WSUReactorCore.JPG
Cherenkov radiation

Nuclear power was 8.3% of total production [20] and 18.8% of electric generation [34] in 2021. Seven states made up half the total: Illinois (12%), Pennsylvania (10%), South Carolina (7%), Alabama (6%), North Carolina (6%), Texas (5%) and Tennessee (5%).

The US generated 772 TWh of nuclear power in 2022, surpassing China (395 TWh) and France (282 TWh). However, nuclear power constitutes a much smaller percentage of total power generation (18%) when compared to France (63%). [35]

Nuclear had significant growth from the 70s through the 90s, but has stagnated since. [20] A cessation of new nuclear plant construction coincided with the accident at Three Mile Island. [36] Future growth may come from smaller reactors. [37]

Among the largest nuclear plants in the US are Grand Gulf in Claiborne County, Mississippi and Peach Bottom in York County, Pennsylvania. [38] The oldest reactor still in commercial operation is Nine Mile Point in Scriba, New York. [39]

Renewables

Renewable energy sources, 2021. US Energy Production 2021 Renewable.png
Renewable energy sources, 2021.

Renewable energy in the United States accounted for 12.5% of the total production in 2021, [20] and 20.7% of electric generation. [34] The category has seen rapid growth, doubling in total output between 2000 and 2020. They have exceeded nuclear since 2011 and surpassed coal in 2020 for the first time since wood fuel fell out of use. [20]

Renewables are expected to continue growing. [40] Because many of these are variable renewable energy, there are plans for considerable growth in battery storage. [41]

Biomass

An ethanol plant in Nevada, Iowa Lincolnway Energy ethanol plant.jpg
An ethanol plant in Nevada, Iowa
Wood burner in Scotia, California WOOD CHIP BURNER AT NIGHT - NARA - 543002.jpg
Wood burner in Scotia, California

Biomass made up 5% of total production and 38% of renewables in 2022. [20] About 49% of this was biofuels, 43% was wood, and 8% was waste and other biomass.

Ethanol made up the majority of biofuels in 2022, while biodiesel and renewable diesel made up about 16%. For ethanol, about 40% of the available energy is lost or diverted to co-products during the manufacturing process, [42] and the equivalent of 20% is used to power and run the equipment. [43] About 45% of domestic corn output goes toward producing ethanol. [44] The US led the world in ethanol production in 2021, producing more than half of the total. [45] The US is a net exporter of biofuels.

Use of biofuels increased by a factor of 10 between 2000 and 2020, eventually exceeding wood. [18] The desire for ethanol originated from the need to replace methyl tert-butyl ether, which was contaminating groundwater. [46] The Energy Policy Act of 2005 mandated an increased use of ethanol. [47] Most gasoline sold in the US contains up to 10% ethanol. [48]

Industry uses two-thirds of the wood fuel in the US, while the residential sector uses about a quarter. Wood and paper factories use wood waste on-site to reduce their energy costs. About 9% of homes used firewood in 2020. [49]

Wood made up the majority of energy consumption until near the end of the 1800s, after which it declined in total use for several decades, to about half its peak. [9] The 80s saw the first significant increase in over a century, of about 65%, before declining again by the 2010s. [18]

Geothermal

McGinness Hills in Nevada McGinness Hills 1&2 Snow.jpg
McGinness Hills in Nevada

Two-thirds of the geothermal energy in the US in 2021 was electric, with the remainder being direct use and heat pumps. [18] [50] Geothermal power made up 2% of renewable generation, [34] 70% of which came from California. [51] The Geysers is the largest complex of geothermal energy production in the world. [52] The US ranks first in geothermal capacity, ahead of Indonesia and the Philippines. [53]

Hydro

Grand Coulee Dam in Washington Grand Coulee Dam.jpg
Grand Coulee Dam in Washington

Hydro made up 6% of electric generation and 29% of renewable generation in 2021. [34] Three states made up over half of the total: Washington (29%), New York (12%) and Oregon (11%). [51] Overall 246 TWh were generated across 1,449 conventional plants and 40 pumped storage plants. [54] As of 2021, the US was fourth in the world in total hydroelectric generation behind Canada and Brazil, each generating over 350 TWh. China produced the most, with an estimated 1,300 TWh. [53]

Hydro has been used in the US since 1880 when it powered the Wolverine Chair factory in Grand Rapids, Michigan. [55] By 1950, 29% of total electricity production came from hydro, as it produced 96 TWh. [6] Hydro generation had tripled by the 70s, but has not consistently grown since. Hydro has had large flucuations from year to year: for example in 2010, generation jumped from 253 to 311 TWh the next year, before dropping to 269 TWh the year after that. While hydro has maintained generation in the 200 to 350 TWh range for the past few decades, its share of the total has declined as other sources have risen. Since 2019, wind power has exceeded hydro as the largest renewable electricity source. [6]

At 132 years old, the plant in Whiting, Wisconsin is the oldest power plant still running in the US. [55] The Grand Coulee Dam is the largest plant for hydro and in general in the US, and the fifth-largest hydro plant in the world. Built in Washington in 1942, it continues to operate with a capacity of 6,765 MW. [55] The Bath County Pumped Storage Station is the second-largest such facility in the world, with a capacity of 3,003 MW. [56]

Solar

Concentrated solar thermal plant (Ivanpah Solar) Ivanpah Solar Electric Generating System Tower.jpg
Concentrated solar thermal plant (Ivanpah Solar)

Solar made up 4% of electric generation and 19% of renewable generation in 2021. Of the 164 TWh generated, 70% was by utilities and an estimated 30% was small-scale such as rooftop solar. [34] Three states made up over half of total grid generation: California (30%), Texas (13%) and North Carolina (9%). [51] In 2021, the US grid produced the second most solar power in the world, behind China's 328 GWh. [53]

Since 2006, solar has been the fastest growing energy source in the US, expanding 50% per year on average. [12] The largest solar farms in the US include Solar Star in Rosamond, California, Desert Sunlight in Desert Center, California and Copper Mountain in Boulder City, Nevada. [57] The Bureau of Land Management leases federal land to be used for solar farms. [58]

Almost all states employ net metering to compensate owners of small-scale solar, although policies by state vary considerably. [59]

Wind

Wind turbines in Maine Spruce Mt Wind in Fall.jpg
Wind turbines in Maine

Wind made up 9% of electric generation and 44% of renewable generation in 2021. [34] Four states made up over half of the total: Texas (26%), Iowa (10%), California (9%) and Kansas (7%). [51] The US grid produces significantly more wind power than Germany or India, but less than half of China. [53]

Since 1998, wind power has grown 23% per year on average in the US. [12] Prominent areas for wind turbines include Alta Wind in Kern County, California, Shepherds Flat in Gilliam County, Oregon and Roscoe Wind Farm in Nolan County, Texas. [57]

Final energy consumption

Consumption by sector, 2021 Consumption sector treemap.png
Consumption by sector, 2021
Oil refinery in Houston 2018a.jpg Minneapolis neighborhood Near North (52247881193).jpg 2007 Toyota RAV4 V6 AWD.jpg Federal Office Building Oak Ridge (7071647423).jpg
An example of each consumption sector: a refinery, a house, a car and an office

Industry has long been the country's largest energy sector. [4] [5] It used 33% of total energy in 2021, most of which was divided evenly between natural gas, electricity and petroleum. A survey from 2018 estimated that the largest energy users were the chemical industry (30%), petroleum and coal processing (18%), mining (9%) and paper (9%). [60]

The most energy-intensive industry was by far petroleum and coal, at over 30 billion BTU per employee. The paper industry was second at 6.5 billion BTU per employee. Each of these handles energy sources as part of their raw materials (fossil fuels and wood). [61] The same survey found that half of the electric use was to drive machines and about 10% each for heating, cooling and electro-chemical processes. Most of the remainder was for factory lighting and HVAC. About half of the natural gas was for process heating, and most of the rest was for boilers. [62]

Transportation used 28% of energy, almost all of which was petroleum and other fuels. Half of the combustible fuels that make up the transportation sector were gasoline, and half of the vehicle usage was for cars and small trucks. [63] Diesel and heavier trucks each made up about a quarter of their respective categories; jet fuel and aircraft were about a tenth each. Biofuels such as ethanol and biodiesel made up 5%, while natural gas was 4%. Electricity from mass transit was 0.2%; electricity for light passenger vehicles is counted in other sectors, but figures from the US Department of Energy estimate that 2.1 million electric vehicles used 6.1 TWh to travel 19 billion miles, indicating an average fuel efficiency of 3.1 miles per kWh. [64]

Over two-thirds of the energy used by homes, offices, and other commercial businesses is electric, including electric losses. [65] [66] Most of the energy used in homes was for space heating (34%) and water heating (19%), much more than the amount used for space cooling (16%) and refrigeration (7%). [67] Businesses use similar percentages for space cooling and refrigeration. They use less for space and water heating but more for lighting and cooking. [68]

Most homes in the US are single-family detached, [69] which on average use almost triple the energy of apartments in larger buildings. [70] However, single family households have 50% more persons and triple the floor space. Usage per square foot of living space is roughly equal for most housing types except small apartment buildings and mobile homes. Small apartments are more likely to be older than other housing types, [71] while mobile homes tend to have poor insulation. [72]

Regional variation

The state with the lowest per capita energy use is Rhode Island, at 161 million BTU per year, and the highest is Louisiana, at 908 million BTU per year. Energy use and prices often have an inverse relationship; Hawaii uses some of the least energy per capita but pays the highest price on average, while Louisiana pays the least on average. [73]

Residential prices follow a similar trend, but the differences between states are usually less drastic. The exception is Hawaii, which pays 84 cents per million BTU, more than double the next largest state of Florida, which pays 33 cents. [74]

Household energy use varies by home type and by region. Although single-family detached homes are less common in the Northeast, the average house there uses 60% more energy than one in the West. Some of the regional differences can be explained by climate, as two-thirds of northeastern homes are in cold regions, while less than a third of western homes are. [75] [76]

The land-use decisions of cities and towns also explain some of the regional differences in energy use. Townhouses are more energy efficient than single-family homes because less heat, for example, is used per person. Similarly, areas with more homes in a compact neighborhood encourage walking, biking and transit, thereby reducing transportation energy use. A 2011 U.S. EPA study found that multi-family homes in urban neighborhoods, with well-insulated buildings and fuel-efficient cars, use less than two-thirds of the energy used by conventionally built single-family houses in suburban areas (with standard cars). [77]

Electricity

Generation by source US Electricity treemap.png
Generation by source

The United States is the world's second-largest producer and consumer of electricity. It generates 15% of the world's electricity supply, about half as much as China. [78]

The United States produced 3,988 TWh in 2021. Total generation has been flat since 2010. Net electricity imports were 39 TWh, or about 1% of sales. Historically, net imports have been between just under 0% to just over 1.5%. [6]

Fossil fuels made up the majority of generation, with natural gas providing 38% and coal 23%. Petroleum provided less than 1%. Natural gas as a proportion of fossil fuels has been increasing since the 90's, with coal peaking around 2008 and natural gas becoming the top fossil fuel in 2016. [12]

Nuclear provided 20%, a level consistent since about 1990. Nuclear surpassed coal in 2020 for the first time, as coal dipped to its lowest proportion in over 70 years.

Among renewables, wind and solar continued to expand, with wind exceeding hydro since 2019. Renewable use has doubled from 2010 to 2020, reaching 21% of total generation.

Grid capacity

The United States had a nameplate generation capacity of 1,213 GW in 2021. [7] The following table summarizes the electrical energy generated by fuel source for the United States grid in 2021. Figures account for generation losses, but not transmission losses. Fission had the highest capacity factor, while petroleum had the lowest.

The US grid first connected East and West in 1967. [79] There are over 7,300 power plants and almost 160,000 miles of high voltage lines. [80]

US electric grid capacity and generation in 2021 [6] [7]
SourceCapacity
(GW)		Generation
(TWh)		Capacity
factor
Natural Gas559.31480.130%
Coal228.0 892.345%
Fission100.0 778.289%
Wind133.5 377.932%
Hydro 80.0 245.335%
Solar 61.9 114.521%
Petroleum 32.5  18.3 6%
Biomass 14.1  26.722%
Geothermal  3.9  15.545%
Total1,2133,98837%

Generation by state

Generation by state and source State generation treemap.png
Generation by state and source

The following figures offer detail into the sources of generation used in each state. [51] Most often, natural gas is the largest source in a given state, with 22 states using it more than any other. Among renewable sources, 18 states use wind power more than any other.

Though not always the most prominent source, each state will use at least one source at a rate above the national average. Twelve states use nuclear power more than average, and California and Hawaii each use more solar and petroleum, respectively.

Texas contributes more to the grid than any other state, followed by Florida, Pennsylvania and California. On net, Pennsylvania exports the most power, while California imports the most.

Electric consumption

Home electrification Electric pct Resid.png
Home electrification

Electric grid consumption in the US was 3,806 TWh in 2021. Since 2010, total consumption has remained within 2% of this figure. Per capita consumption was 11.5 MWh in 2021, down 8% from its peak in 2007. [81] [82]

Residential customers used 39% of total electricity. [81] Each month, the average customer used 886 kWh and paid $121 at an average rate of 13.7 cents/kWh. [83] The commercial sector used 35% and industrial used 26%. Transportation used less than half of one percent.

System loss within the grid includes use in the generation process and transmission losses, as well as unaccounted loads. For 2021, this amounted to 203 TWh, or 5.3% of grid generation. Electricity used directly at the commercial or industrial level added 139 TWh, so total consumption was 3,945 TWh. [84]

The northeastern US has long paid the highest electricity prices, while simultaneously using it the least per capita. [85] California is an outlier in the west region; its neighbors tend to pay some of the lowest rates in the country, while California is second only to Hawaii and Alaska.

See also

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The United States has the second largest electricity sector in the world, with 4,178 Terawatt-hours of generation in 2023. In 2023 the industry earned $491b in revenue at an average price of $0.127/kWh.

Energy in Libya primarily revolves around the production, consumption, import, and export of energy, with a significant focus on the petroleum industry, which serves as the backbone of the Libyan economy. As of 2021, Libya is recognized as the seventh-largest crude oil producer in OPEC and ranks third in total petroleum liquids production in Africa. The country holds 3% of the world's proven oil reserves and 39% of Africa's, marking it as a key player in the global energy sector. Despite its abundant resources, the energy industry in Libya has faced significant challenges due to political instability following the civil war that began in 2011. These challenges have led to frequent disruptions in oil production and exports, directly impacting the national economy and its contributions to the global oil market. The sector's future is closely tied to the resolution of political conflicts and the effective management of its vast hydrocarbon resources.

Energy in Algeria encompasses the production, consumption, and import of energy. As of 2009, the primary energy use in Algeria was 462 TWh, with a per capita consumption of 13 TWh. Algeria is a significant producer and exporter of oil and gas and has been a member of the Organization of the Petroleum Exporting Countries (OPEC) since 1969. It also participates in the OPEC+ agreement, collaborating with non-OPEC oil-producing nations. Historically, the country has relied heavily on fossil fuels, which are heavily subsidized and constitute the majority of its energy consumption. In response to global energy trends, Algeria updated its Renewable Energy and Energy Efficiency Development Plan in 2015, aiming for significant advancements by 2030. This plan promotes the deployment of large-scale renewable technologies, such as solar photovoltaic systems and onshore wind installations, supported by various incentive measures.

<span class="mw-page-title-main">Energy in Slovenia</span>

Total primary energy supply (TPES) in Slovenia was 6.80 Mtoe in 2019. In the same year, electricity production was 16.1 TWh, consumption was 14.9 TWh.

<span class="mw-page-title-main">Energy in California</span> Overview of the use of energy in California, U.S.

Energy is a major area of the economy of California. California is the state with the largest population and the largest economy in the United States. It is second in energy consumption after Texas. As of 2018, per capita consumption was the fourth-lowest in the United States partially because of the mild climate and energy efficiency programs.

<span class="mw-page-title-main">Natural gas in the United States</span>

Natural gas was the United States' largest source of energy production in 2016, representing 33 percent of all energy produced in the country. Natural gas has been the largest source of electrical generation in the United States since July 2015.

Denmark is a leading country in renewable energy production and usage. Renewable energy sources collectively produced 81% of Denmark's electricity generation in 2022, and are expected to provide 100% of national electric power production from 2030. Including energy use in the heating/cooling and transport sectors, Denmark is expected to reach 100% renewable energy in 2050, up from the 34% recorded in 2021.

<span class="mw-page-title-main">World energy supply and consumption</span> Global production and usage of energy

World energy supply and consumption refers to the global supply of energy resources and its consumption. The system of global energy supply consists of the energy development, refinement, and trade of energy. Energy supplies may exist in various forms such as raw resources or more processed and refined forms of energy. The raw energy resources include for example coal, unprocessed oil & gas, uranium. In comparison, the refined forms of energy include for example refined oil that becomes fuel and electricity. Energy resources may be used in various different ways, depending on the specific resource, and intended end use. Energy production and consumption play a significant role in the global economy. It is needed in industry and global transportation. The total energy supply chain, from production to final consumption, involves many activities that cause a loss of useful energy.

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