Visualizing America’s Energy Use, in One Giant Chart
Have you ever wondered where the country’s energy comes from, and how exactly it gets used?
Luckily, the Lawrence Livermore National Laboratory (LLNL) crunches the numbers every year, outputting an incredible flow diagram that covers the broad spectrum of U.S. energy use.
The 2019 version of this comprehensive diagram gives us an in-depth picture of the U.S. energy ecosystem, showing not only where energy originates by fuel source (i.e. wind, oil, natural gas, etc.) but also how it’s ultimately consumed by sector.
In Perspective: 2019 Energy Use
Below, we’ll use the unit of quads, with each quad worth 1 quadrillion BTUs, to compare data for the last five years of energy use in the United States. Each quad has roughly the same amount of energy as contained in 185 million barrels of crude oil.
|Year||Energy Consumption||Change (yoy)||Fossil Fuels in Mix|
Interestingly, overall energy use in the U.S. actually decreased to 100.2 quads in 2019, similar to a decrease last seen in 2015.
It’s also worth noting that the percentage of fossil fuels used in the 2019 energy mix decreased by 0.2% from last year to make up 80.0% of the total. This effectively negates the small rise of fossil fuel usage that occurred in 2018.
Energy Use by Source
Which sources of energy are seeing more use, as a percentage of the total energy mix?
Since 2015, natural gas has grown from 29% to 32% of the U.S. energy mix — while coal’s role in the mix has dropped by 4.7%.
In these terms, it can be hard to see growth in renewables, but looking at the data in more absolute terms can tell a different story. For example, in 2015 solar added 0.532 quads of energy to the mix, while in 2019 it accounted for 1.04 quads — a 95% increase.
Finally, let’s take a look at where energy goes by end consumption, and whether or not this is evolving over time.
Residential, commercial, and industrial sectors are all increasing their use of energy, while the transportation sector is seeing a drop in energy use — likely thanks to more fuel efficient cars, EVs, public transport, and other factors.
The COVID-19 Effect on Energy Use
The energy mix is incredibly difficult to change overnight, so over the years these flow diagrams created by the Lawrence Livermore National Laboratory (LLNL) have not changed much.
One exception to this will be in 2020, which has seen an unprecedented shutdown of the global economy. As a result, imagining the next iteration of this energy flow diagram is basically anybody’s guess.
We can likely all agree that it’ll include increased levels of energy consumption in households and shortfalls everywhere else, especially in the transportation sector. However, the total amount of energy used — and where it comes from — might be a significant deviation from past years.
6 Ways Hydrogen and Fuel Cells Can Help Transition to Clean Energy
Here are six reasons why hydrogen and fuel cells can be a fit for helping with the transition to a lower-emission energy mix.
While fossil fuels offer an easily transportable, affordable, and energy-dense fuel for everyday use, the burning of this fuel creates pollutants, which can concentrate in city centers degrading the quality of air and life for residents.
The world is looking for alternative ways to ensure the mobility of people and goods with different power sources, and electric vehicles have high potential to fill this need.
But did you know that not all electric vehicles produce their electricity in the same way?
Hydrogen: An Alternative Vision for the EV
The world obsesses over battery technology and manufacturers such as Tesla, but there is an alternative fuel that powers rocket ships and is road-ready. Hydrogen is set to become an important fuel in the clean energy mix of the future.
Today’s infographic comes from the Canadian Hydrogen and Fuel Cell Association (CHFCA) and it outlines the case for hydrogen.
Hydrogen Supply and Demand
Some scientists have made the argument that it was not hydrogen that caused the infamous Hindenburg to burst into flames. Instead, the powdered aluminum coating of the zeppelin, which provided its silver look, was the culprit. Essentially, the chemical compound coating the dirigibles was a crude form of rocket fuel.
Industry and business have safely used, stored, and transported hydrogen for 50 years, while hydrogen-powered electric vehicles have a proven safety record with over 10 million miles of operation. In fact, hydrogen has several properties that make it safer than fossil fuels:
- 14 times lighter than air and disperses quickly
- Flames have low radiant heat
- Less combustible
Since hydrogen is the most abundant chemical element in the universe, it can be produced almost anywhere with a variety of methods, including from fuels such as natural gas, oil, or coal, and through electrolysis. Fossil fuels can be treated with extreme temperatures to break their hydrocarbon bonds, releasing hydrogen as a byproduct. The latter method uses electricity to split water into hydrogen and oxygen.
Both methods produce hydrogen for storage, and later consumption in an electric fuel cell.
Fuel Cell or Battery?
Battery and hydrogen-powered vehicles have the same goal: to reduce the environmental impact from oil consumption. There are two ways to measure the environmental impact of vehicles, from “Well to Wheels” and from “Cradle to Grave”.
Well to wheels refers to the total emissions from the production of fuel to its use in everyday life. Meanwhile, cradle to grave includes the vehicle’s production, operation, and eventual destruction.
According to one study, both of these measurements show that hydrogen-powered fuel cells significantly reduce greenhouse gas emissions and air pollutants. For every kilometer a hydrogen-powered vehicle drives it produces only 2.7 grams per kilometer (g/km) of carbon dioxide while a battery electric vehicle produces 20 g/km.
During everyday use, both options offer zero emissions, high efficiency, an electric drive, and low noise, but hydrogen offers weight-saving advantages that battery-powered vehicles do not.
In one comparison, Toyota’s Mirai had a maximum driving range of 312 miles, 41% further than Tesla’s Model 3 220-mile range. The Mirai can refuel in minutes, while the Model 3 has to recharge in 8.5 hours for only a 45% charge at a specially configured quick charge station not widely available.
However, the world still lacks the significant infrastructure to make this hydrogen-fueled future possible.
Large scale production delivers economic amounts of hydrogen. In order to achieve this scale, an extensive infrastructure of pipelines and fueling stations are required. However to build this, the world needs global coordination and action.
Countries around the world are laying the foundations for a hydrogen future. In 2017, CEOs from around the word formed the Hydrogen Council with the mission to accelerate the investment in hydrogen.
Globally, countries have announced plans to build 2,800 hydrogen refueling stations by 2025. German pipeline operators presented a plan to create a 1,200-kilometer grid by 2030 to transport hydrogen across the country, which would be the world’s largest in planning.
Fuel cell technology is road-ready with hydrogen infrastructure rapidly catching up. Hydrogen can deliver the power for a new clear energy era.
The New Energy Era: The Impact of Critical Minerals on National Security
The U.S. finds itself in a precarious position, depending largely on China and other foreign nations for the critical minerals needed in the new energy era.
In 1954, the United States was only fully reliant on foreign sources for eight mineral commodities.
Fast forward 60+ years, and the country now depends on foreign sources for 20 such materials, including ones essential for military and battery technologies.
This puts the U.S. in a precarious position, depending largely on China and other foreign nations for the crucial materials such as lithium, cobalt, and rare earth metals that can help build and secure a more sustainable future.
America’s Energy Dependence
Today’s visualization comes from Standard Lithium, and it outlines China’s dominance of the critical minerals needed for the new energy era.
Which imported minerals create the most risk for U.S. supply chains and national security?
Natural Resources and Development
Gaining access to natural resources can influence a nation’s ability to grow and defend itself. China’s growth strategy took this into account, and the country sourced massive amounts of raw materials to position the country as the number one producer and consumer of commodities.
By the end of the second Sino-Japanese War in 1945, China’s mining industry was largely in ruins. After the war, vast amounts of raw materials were required to rebuild the country.
In the late 1970s, the industry was boosted by China’s “reform and opening” policies, and since then, China’s mining outputs have increased enormously. China’s mining and material industries fueled the rapid growth of China from the 1980s onwards.
Supply Chain Dominance
A large number of Chinese mining companies also invest in overseas mining projects. China’s “going out” strategy encourages companies to move into overseas markets.
They have several reasons to mine beyond its shores: to secure mineral resources that are scarce in China, to gain access to global markets and mineral supply chains, and to minimize domestic overproduction of some mineral commodities.
This has led to China to become the leading producer of many of the world’s most important metals while also securing a commanding position in key supply chains.
As an example of this, China is the world’s largest producer and consumer of rare earth materials. The country produces approximately 94% of the rare earth oxides and around 100% of the rare earth metals consumed globally, with 50% going to domestic consumption.
U.S.-China Trade Tensions
The U.S. drafted a list of 35 critical minerals in 2018 that are vital to national security, and according to the USGS, the country sources at least 31 of the materials chiefly through imports.
China is the third largest supplier of natural resources to the U.S. behind Canada and Mexico.
|Rank||Country||U.S. Minerals Imports By Country ($US, 2018)|
This dependence on China poses a risk. In 2010, a territorial dispute between China and Japan threatened to disrupt the supply of the rare earth elements. Today, a similar threat still looms over trade tensions between the U.S. and China.
China’s scale of influence over critical minerals means that it could artificially limit supply and move prices in the global clean energy trade, in the same way that OPEC does with oil. This would leave nations that import their mineral needs in an expensive and potentially limiting spot.
Moon Shot: Building Domestic Supply and Production
Every supply chain starts with raw materials. The U.S. had the world’s largest lithium industry until the 1990s—but this is no longer the case, even though the resources are still there.
The U.S. holds 12% of the world’s identified lithium resources, but only produces 2% of global production from a single mine in Nevada.
There are a handful of companies looking to develop the U.S. lithium reserves, but there is potential for so much more. Less than 18% of the U.S. land mass is geologically mapped at a scale suited to identifying new mineral deposits.
The United States has the resources, it is just a question of motivation. Developing domestic resources can reduce its foreign dependence, and enable it to secure the new energy era.
In the clean energy economy of the future, critical minerals will be just as essential—and geopolitical—as oil is today.
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