The History of Energy Transitions
Over the last 200 years, how we’ve gotten our energy has changed drastically.
These changes were driven by innovations like the steam engine, oil lamps, internal combustion engines, and the wide-scale use of electricity. The shift from a primarily agrarian global economy to an industrial one called for new sources to provide more efficient energy inputs.
The current energy transition is powered by the realization that avoiding the catastrophic effects of climate change requires a reduction in greenhouse gas emissions. This infographic provides historical context for the ongoing shift away from fossil fuels using data from Our World in Data and scientist Vaclav Smil.
Coal and the First Energy Transition
Before the Industrial Revolution, people burned wood and dried manure to heat homes and cook food, while relying on muscle power, wind, and water mills to grind grains. Transportation was aided by using carts driven by horses or other animals.
In the 16th and 17th centuries, the prices of firewood and charcoal skyrocketed due to shortages. These were driven by increased consumption from both households and industries as economies grew and became more sophisticated.
Consequently, industrializing economies like the UK needed a new, cheaper source of energy. They turned to coal, marking the beginning of the first major energy transition.
|Year||Traditional Biomass % of Energy Mix||Coal % of Energy Mix|
As coal use and production increased, the cost of producing it fell due to economies of scale. Simultaneously, technological advances and adaptations brought about new ways to use coal.
The steam engine—one of the major technologies behind the Industrial Revolution—was heavily reliant on coal, and homeowners used coal to heat their homes and cook food. This is evident in the growth of coal’s share of the global energy mix, up from 1.7% in 1800 to 47.2% in 1900.
The Rise of Oil and Gas
In 1859, Edwin L. Drake built the first commercial oil well in Pennsylvania, but it was nearly a century later that oil became a major energy source.
Before the mass production of automobiles, oil was mainly used for lamps. Oil demand from internal combustion engine vehicles started climbing after the introduction of assembly lines, and it took off after World War II as vehicle purchases soared.
Similarly, the invention of the Bunsen burner opened up new opportunities to use natural gas in households. As pipelines came into place, gas became a major source of energy for home heating, cooking, water heaters, and other appliances.
|Year||Coal % of Energy Mix||Oil % of Energy Mix||Natural Gas % of Energy Mix|
Coal lost the home heating market to gas and electricity, and the transportation market to oil.
Despite this, it became the world’s most important source of electricity generation and still accounts for over one-third of global electricity production today.
The Transition to Renewable Energy
Renewable energy sources are at the center of the ongoing energy transition. As countries ramp up their efforts to curb emissions, solar and wind energy capacities are expanding globally.
Here’s how the share of renewables in the global energy mix changed over the last two decades:
|Year||Traditional Biomass||Renewables||Fossil Fuels||Nuclear Power|
In the decade between 2000 and 2010, the share of renewables increased by just 1.1%. But the growth is speeding up—between 2010 and 2020, this figure stood at 3.5%.
Furthermore, the current energy transition is unprecedented in both scale and speed, with climate goals requiring net-zero emissions by 2050. That essentially means a complete fade-out of fossil fuels in less than 30 years and an inevitable rapid increase in renewable energy generation.
Renewable energy capacity additions were on track to set an annual record in 2021, following a record year in 2020. Additionally, global energy transition investment hit a record of $755 billion in 2021.
However, history shows that simply adding generation capacity is not enough to facilitate an energy transition. Coal required mines, canals, and railroads; oil required wells, pipelines, and refineries; electricity required generators and an intricate grid.
Similarly, a complete shift to low-carbon sources requires massive investments in natural resources, infrastructure, and grid storage, along with changes in our energy consumption habits.
Visualizing U.S. Crude Oil and Petroleum Product Imports in 2021
This visualization breaks down U.S. oil imports by country for 2021, showing the split by OPEC and non-OPEC nations.
U.S. Petroleum Product and Crude Oil Imports in 2021: Visualized
Energy independence is top of mind for many nations as Russia’s invasion of Ukraine has prompted sanctions and bans against Russian coal and crude oil imports.
Despite being the world’s largest oil producer, in 2021 the U.S. still imported more than 3 billion barrels of crude oil and petroleum products, equal to 43% of the country’s consumption.
This visualization uses data from the Energy Information Administration (EIA) to compare U.S. crude oil and refined product imports with domestic crude oil production, and breaks down which countries the U.S. imported its oil from in 2021.
U.S. Crude Oil Imports, by Country
The U.S. imports more than 8 million barrels of petroleum products a day from other nations, making it the world’s second-largest importer of crude oil behind China.
America’s northern neighbor, Canada, is the largest source of petroleum imports at 1.58 billion barrels in 2021. These made up more than 51% of U.S. petroleum imports, and when counting only crude oil imports, Canada’s share rises to 62%.
|Rank||Country||U.S. Oil Imports (2021, in barrels)||Share|
|#1||🇨🇦 Canada||1,584 million||51.3%|
|#2||🇲🇽 Mexico||259 million||8.4%|
|#3||🇷🇺 Russia||254 million||7.9%|
|#4||🇸🇦 Saudi Arabia||156 million||5.1%|
|#5||🇨🇴 Colombia||74 million||2.4%|
|#6||🇪🇨 Ecuador||61 million||2.0%|
|#7||🇮🇶 Iraq||57 million||1.9%|
|#8||🇧🇷 Brazil||52 million||1.7%|
|#9||🇰🇷 South Korea||48 million||1.6%|
|#10||🇳🇱 Netherlands||46 million||1.5%|
|#11||🇳🇬 Nigeria||45 million||1.5%|
|Other countries||459 million||14.7%|
The second-largest contributor to U.S. petroleum imports was another neighbor, Mexico, with 259 million barrels imported in 2021—making up a bit more than 8% of U.S. petroleum imports.
Russia was the third-largest exporter of crude oil and petroleum products to the U.S. in 2021, with their 254 million barrels accounting for almost 8% of total imports.
U.S. Crude Oil and Petroleum Imports from OPEC and OPEC+
Only about 11% of U.S. crude oil and petroleum product imports come from OPEC nations, with another 16.3% coming from OPEC+ members.
While imports from OPEC and OPEC+ members make up more than a quarter of America’s total petroleum imports, this share is fairly small when considering OPEC members currently control nearly 80% of the world’s oil reserves.
Which Countries are Part of OPEC and OPEC-Plus?
The Organization of Petroleum Exporting Countries (OPEC) is a group of 13 petroleum producing nations that formed in 1960 to provide steady prices and supply distribution of crude oil and petroleum products.
In 2016, OPEC-plus was formed with additional oil-exporting nations in order to better control global oil supply and markets in response to a deluge of U.S. shale supply hitting the markets at that time.
- 🇮🇷 Iran*
- 🇮🇶 Iraq*
- 🇰🇼 Kuwait*
- 🇸🇦 Saudi Arabia*
- 🇻🇪 Venezuela*
- 🇩🇿 Algeria
- 🇦🇴 Angola
- 🇬🇶 Equatorial Guinea
- 🇬🇦 Gabon
- 🇱🇾 Libya
- 🇳🇬 Nigeria
- 🇨🇩 Republic of the Congo
- 🇦🇪 United Arab Emirates
* Founding members
- 🇷🇺 Russia
- 🇲🇽 Mexico
- 🇰🇿 Kazakhstan
- 🇲🇾 Malaysia
- 🇦🇿 Azerbaijan
- 🇧🇭 Bahrain
- 🇧🇳 Brunei
- 🇴🇲 Oman
- 🇸🇩 Sudan
- 🇸🇸 South Sudan
Although OPEC and OPEC+ members supply a significant part of U.S. crude oil and petroleum imports, America has avoided overdependence on the group by instead building strong ties with neighboring exporters Canada and Mexico.
Crude Oil Imports Capitalize on U.S. Refineries
While the U.S. has been a net exporter of crude oil and petroleum products the past two years, exporting 3.15 billion barrels while importing 3.09 billion barrels in 2021, crude oil-only trade tells a different story.
In terms of just crude oil trade, the U.S. was a significant net importer, with 2.23 billion barrels of crude oil imports and only 1.08 billion barrels of crude oil exports. But with the U.S. being the world’s largest crude oil producer, why is this?
As noted earlier, neighboring Canada makes up larger shares of U.S. crude oil imports compared to crude oil and petroleum product imports. Similarly, Mexico reaches 10% of America’s crude oil imports when excluding petroleum products.
Maximizing imports from neighboring countries makes sense on multiple fronts for all parties due to lower transportation costs and risks, and it’s no surprise Canada and Mexico are providing large shares of just crude oil as well. With such a large collection of oil refineries across the border, it’s ultimately more cost-efficient for Canada and Mexico to tap into U.S. oil refining rather than refining domestically.
In turn, Mexico is the largest importer of U.S. produced gasoline and diesel fuel, and Canada is the third-largest importer of American-produced refined petroleum products.
Replacing Russian Crude Oil Imports
While Russia only makes up 8% of American petroleum product imports, their 254 million barrels will need to be replaced as both countries ceased trading soon after Russia’s invasion of Ukraine.
In an effort to curb rising oil and gasoline prices, in March President Joe Biden announced the release of up to 180 million barrels from the U.S. Strategic Petroleum Reserves. Other IEA nations are also releasing emergency oil reserves in an attempt to curb rising prices at the pump and volatility in the oil market.
While the U.S. and the rest of the world are still managing the short-term solutions to this oil supply gap, the long-term solution is complex and has various moving parts. From ramping up domestic oil production to replacing oil demand with other cleaner energy solutions, oil trade and imports will remain a vital part of America’s energy supply.
Mapped: Solar and Wind Power by Country
Wind and solar make up 10% of the world’s electricity. Combined, they are the fourth-largest source of electricity after coal, gas, and hydro.
Mapped: Solar and Wind Power by Country
Wind and solar generate over a tenth of the world’s electricity. Taken together, they are the fourth-largest source of electricity, behind coal, gas, and hydro.
This infographic based on data from Ember shows the rise of electricity from these two clean sources over the last decade.
Europe Leads in Wind and Solar
Wind and solar generated 10.3% of global electricity for the first time in 2021, rising from 9.3% in 2020, and doubling their share compared to 2015 when the Paris Climate Agreement was signed.
In fact, 50 countries (26%) generated over a tenth of their electricity from wind and solar in 2021, with seven countries hitting this landmark for the first time: China, Japan, Mongolia, Vietnam, Argentina, Hungary, and El Salvador.
Denmark and Uruguay achieved 52% and 47% respectively, leading the way in technology for high renewable grid integration.
|Rank||Top Countries||Solar/Wind Power Share|
|#10||🇬🇧 United Kingdom||25.2%|
From a regional perspective, Europe leads with nine of the top 10 countries. On the flipside, the Middle East and Africa have the fewest countries reaching the 10% threshold.
Further Renewables Growth Needed to meet Global Climate Goals
The electricity sector was the highest greenhouse gas emitting sector in 2020.
According to the International Energy Agency (IEA), the sector needs to hit net zero globally by 2040 to achieve the Paris Agreement’s goals of limiting global heating to 1.5 degrees. And to hit that goal, wind and solar power need to grow at nearly a 20% clip each year to 2030.
Despite the record rise in renewables, solar and wind electricity generation growth currently doesn’t meet the required marks to reach the Paris Agreement’s goals.
In fact, when the world faced an unprecedented surge in electricity demand in 2021, only 29% of the global rise in electricity demand was met with solar and wind.
Even as emissions from the electricity sector are at an all-time high, there are signs that the global electricity transition is underway.
Governments like the U.S., Germany, UK, and Canada are planning to increase their share of clean electricity within the next decade and a half. Investments are also coming from the private sector, with companies like Amazon and Apple extending their positions on renewable energy to become some of the biggest buyers overall.
More wind and solar are being added to grids than ever, with renewables expected to provide the majority of clean electricity needed to phase out fossil fuels.
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