Visualizing U.S. Energy Use in One Giant Chart
If you feel like you’ve seen this diagram before, you probably have.
Every year, it’s assembled by the Lawrence Livermore National Laboratory, a research center founded by UC Berkeley and funded primarily by the U.S. Department of Energy.
The ambitious aim is to chart all U.S. energy use in one Sankey diagram, including the original energy source (i.e. nuclear, oil, wind, etc.) as well as the ultimate end use (i.e. residential, commercial, etc.) for the energy that was generated.
U.S. Energy Use in 2018
According to the research center’s most recent published version of the diagram, U.S. energy use totaled 101.2 quads in 2018.
In case you are wondering, a single quad is equal to 1 quadrillion BTUs, with each quad being roughly equivalent to 185 million barrels of crude oil, 8 billion gallons of gasoline, or 1 trillion cubic feet of natural gas.
Here is how the recent figure compares to previous years:
|Year||U.S. Energy Consumption||% Fossil Fuels in Mix|
As you can see in the table, U.S. energy use has been generally increasing, eventually topping 100 quads per year by 2018. During this time, the total percentage of fossil fuels in the mix has dropped, but only from 81.6% to 80.2%.
Taking a closer look at the data, we can see that the largest percentage increases in the mix have come from solar and wind sources:
Energy use measured in quads (1 quadrillion BTUs)
Solar use has increased 122% since 2014, while wind jumped 46% over the same timeframe. Not surprisingly, energy derived from coal has fallen by 26%.
Dealing With the Rejects
One interesting thing about the diagram is that it also shows rejected energy, which represents the energy that actually gets wasted due to various inefficiencies. In fact, 68% of all energy generated is not harnessed for any productive use.
This makes sense, since gasoline engines are usually only about 20-40% efficient, and even electric engines are 85-90% efficient. Put another way, a certain percentage of energy is always released as heat, sound, light, or other forms that are hard for us to harness.
As electric cars rise in popularity and as modern gas-powered engines also get more efficient, there is hope that the amount of this rejected energy will decrease over time.
Mapped: The World’s Biggest Oil Discoveries Since 1868
Since 1868, there had been 1,232 oil discoveries over 500 million barrels of oil. This map plots these discoveries to reveal global energy hot spots.
Mapped: The World’s Biggest Oil Discoveries Since 1868
Oil and gas discoveries excite markets and nations with the prospect of profits, tax revenues, and jobs. However, geological processes did not distribute them equally throughout the Earth’s crust and their mere presence does not guarantee a windfall for whatever nation under which they lie.
Entire economies and nations have been built on the discovery and exploitation of oil and gas, while some nations have misused this wealth─or projected growth just never materialized.
The 20 Biggest Oil Discoveries
This map includes 1,232 discoveries of recoverable reserves over 500 million barrels of oil equivalent (BOE) From 1868 to 2010.
The discoveries cluster in certain parts of the world, covering 46 countries, and are of significant magnitude for each country’s economy. The average discovery is worth 1.4% of a country’s GDP today, based on the cash value from their production or net present value (NPV).
Of the total 1,232 discoveries, these are the 20 largest oil and gas fields:
|Field||Onshore/Offshore||Location||Discovery||Production start||Recoverable oil, past and future (billion barrels)|
|Ghawar Field||Onshore||Saudi Arabia||1948||1951||88-104|
|Mesopotamian Foredeep Basin||Onshore||Kuwait||n/a||n/a||66-72|
|Bolivar Coastal Field||Onshore||Venezuela||1917||1922||30-32|
|Safaniya Field||Offshore||Kuwait/Saudi Arabia||1951||1957||30|
|Upper Zakum Field||Offshore||Abu Dhabi, UAE||1963||1967||21|
|Romashkino Field||Onshore||Russia Volga-Ural||1948||1949||16-17|
|Shaybah Field||Onshore||Saudi Arabia||1998||1998||15|
|West Qurna Field||Onshore||Iraq||1973||2012||15-21|
Russia, West Siberia
The location of these deposits reveals a certain pattern to geopolitical flashpoints and their importance to the global economy.
While these discoveries have brought immense advantages in the form of cheap fuel and massive revenues, they have also altered and challenged how nations govern their natural wealth.
The Future of Resource Wealth: A Curse or a Blessing?
A ‘presource curse’ could follow in the wake of the discovery, whereby predictions of projected growth and feelings of euphoria turn into disappointment.
An oil discovery can impose detrimental consequences on an economy long before a single barrel leaves the ground. Ideally, a discovery should increase the economic output of a country that claims the oil. However, after major discoveries, the projected growth sometimes does not always materialize as predicted.
Getting from discovery to sustained prosperity depends on a number of steps. Countries must secure investment to develop a project to production, and government policy must respond by preparing the economy for an inflow of investment and foreign currency. However, this is a challenging prospect, as the appetite for these massive projects appears to be waning.
In a world working towards reducing its dependence on fossil fuels, what will happen to countries that depend on oil wealth when demand begins to dwindle?
Countries can no longer assume their oil and gas resources will translate into reliable wealth — instead, it is how you manage what you have now that counts.
Which Companies Are Responsible For the Most Carbon Emissions?
Since 1965, over ⅓ of the world’s cumulative carbon emissions can be traced back to just 20 fossil fuel companies. Who are the biggest contributors?
20 Companies Responsible For the Most Carbon Emissions?
Since 1965, it’s estimated over 1.35 million metric tons (MtCO₂e) of greenhouse gases have been released into the atmosphere—and over a third can be traced back to just 20 companies.
This week’s chart draws on a dataset from the Climate Accountability Institute, and highlights the companies which have been responsible for the most carbon emissions in the past half-century.
The Sum of their Carbon Emissions
Between 1965-2017, the top 20 companies have contributed 480,169 MtCO₂e in total carbon emissions, or 35% of cumulative global emissions. This whopping amount is mostly from the combustion of their products—each company on this chart deals in fossil fuels.
The largest contributor? Saudi Aramco, the national petroleum and natural gas company of Saudi Arabia. Saudi Aramco actually comes in first on another list as well—it’s the most profitable company, making over $304 million daily.
However, this financial gain came at a significant cost: the state-owned giant’s operations have resulted in 59,262 MtCO₂e in carbon emissions since 1965. To put that into perspective, this total is more than six times China’s emissions in 2017 alone (9,838 MtCO₂e).
Explore the full list of companies by location, who owns them, and their total 1965–2017 emissions count below:
|Company||Country||Ownership||All Emissions, MtCO₂e|
|Total Emissions||480,169 MtCO₂e|
|Saudi Aramco||🇸🇦 Saudi Arabia||State-owned||59,262|
|Exxon Mobil||🇺🇸 U.S.||Investor-owned||41,904|
|National Iranian Oil Co.||🇮🇷 Iran||State-owned||35,658|
|Royal Dutch Shell||🇳🇱 Netherlands||Investor-owned||31,948|
|Coal India||🇮🇳 India||State-owned||23,124|
|Petroleus de Venezuela||🇻🇪 Venezuela||State-owned||15,745|
|Peabody Energy||🇺🇸 U.S.||Investor-owned||15,385|
|Abu Dhabi National Oil Co.||🇦🇪 UAE||State-owned||13,840|
|Kuwait Petroleum Corp.||🇰🇼 Kuwait||State-owned||13,479|
|Iraq National Oil Co.||🇮🇶 Iraq||State-owned||12,596|
|Total SA||🇫🇷 France||Investor-owned||12,352|
|BHP Billiton||🇦🇺 Australia||Investor-owned||9,802|
A Greener Business Model?
According to the researchers, all the companies that show up in today’s chart bear some responsibility for knowingly accelerating the climate crisis even after proven scientific evidence.
In fact, U.S.-based Exxon Mobil is currently on trial for misleading investors: the company downplayed the effect of climate change on its profitability, while internal calculations proved to be much larger. It also sowed public doubt on the immense impacts of rising greenhouse gas levels on the planet.
Growing sustainability and environmental concerns threaten the viability of old business models for these corporations, causing many to pivot away from the fossil fuel focus. Take BP for example—originally named British Petroleum, the company embraced “Beyond Petroleum” as its new rallying cry. More recently, it launched a carbon footprint calculator and is committed to keeping its carbon emissions flat into 2025.
The first step to reducing your emissions is to know where you stand. Find out your #carbonfootprint with our new calculator & share your pledge today!— BP (@BP_plc) October 22, 2019
However, the Climate Accountability Institute argues that more can still be done, with the researchers calling for these companies to reduce their fossil fuel production in the near future.
Continued pressure on these “Big Oil” companies to peak their carbon emissions, and urgently increase their renewable energy investment, may help curb the climate crisis before it’s too late.
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