Charting Energy Consumption by Source and Country
View the interactive version of this post by clicking here.
Over the last 50 years, the world has seen a colossal increase in energy consumption—and with the ongoing transition to renewable energy, it’s interesting to look at how these sources of energy have been evolving over time.
While some countries continue to rely heavily on fossil fuels like oil, coal, and natural gas, others have integrated alternative energy sources into their mix.
This visualization comes to us from Brian Moore and it charts the evolution of energy consumption in the 64 countries that have data available for all of the last 50 years.
Tera-What? The Most Prominent Sources of Energy (2009-2018)
First, let’s take a look at which sources have produced the most energy over the last decade of data. Energy consumption is measured in terawatt-hours (TWh)—a unit of energy equal to outputting one trillion watts for an hour.
|Energy Source||% of Total Energy Consumption |
|Sum of Total Energy
Looking at this data, it’s clear that fossil fuels have been used much more than alternative sources. A deeper dive into the topic helps explain why.
Fossil Fuels: What the Data Shows
As the predominant source of energy, fossil fuels collectively accounted for a massive 86.2% of total energy consumption over 2009-2018, or roughly 1.2 million TWh. If you’re wondering, that’s enough to power the equivalent of 109 billion U.S. homes with electricity for a year.
Among fossil fuel sources, oil emerges as the clear leader, responsible for 34.3% or 509,800 TWh of energy consumption over 2009-2018. Apart from being the primary fuel for transportation throughout history, oil remains relatively affordable—making it an easy choice for producers and consumers alike.
Closely following oil is coal, which countries rely on for its abundance, low costs, and low infrastructure requirements. Over the last decade of data, 29.2% of total energy came from coal, amounting to a substantial 434,300 TWh.
As a cleaner alternative to coal, natural gas has increased in popularity. Gas accounted for 22.8% or 339,300 TWh of energy consumed between 2009-2018, mainly attributed to its ample supply and affordability.
What About Renewables?
Only 13.8% of energy consumption over 2009-2018 came from renewable or alternative sources of energy, and hydropower accounts for nearly half of it. Why has the use of environmentally-friendly energy sources been so low?
Setting up alternative power plants—especially wind, solar, and nuclear—requires significant capital investment, while facing competition from cheaper and more convenient fossil fuels. The barriers to adopting renewable energy have been weakening, but still remain quite high for low-income countries.
Wind and solar energy were responsible for a mere 1.7% of energy consumption. Compared to fossil fuels like oil and coal, this percentage seems even more minuscule than it does on its own—mainly attributable to the high costs traditionally associated with wind and solar energy.
The Top 10 Countries Relying on Fossil Fuels
Fossil fuels have been the predominant source of energy over the years. After all, 43 of these 64 countries sourced more than 80% of their energy from fossil fuels over 2009-2018.
Here are the ones that come out on top:
|Country||% of Energy Consumed From Fossil Fuels|
|Most Used Fossil Fuel
|Saudi Arabia 🇸🇦||100%||Oil|
|Trinidad and Tobago 🇹🇹||100%||Gas|
|United Arab Emirates 🇦🇪||99.9%||Gas|
|Hong Kong 🇭🇰||99.9%||Oil|
Although it is startling to see that several countries were 100% reliant on fossil fuels, it comes as no surprise that these are countries with abundant reserves of oil or natural gas. Not only are fossil fuels central to certain economies in Middle Eastern and North African (MENA), but they also remain highly affordable for consumers in these places.
On a broader scale, developing and low-income countries are heavily dependent on fossil fuels such as coal for access to cheap electricity and ease of installation.
The Top 10 Countries Using Alternative Energy Sources
The transition to alternative energy sources has been welcomed by many countries, but only a few have prioritized its adoption in the energy mix. Here’s a look at the top 10:
|Country||% of Energy From Alternative Sources|
|Most Used Alternative Energy Source
|New Zealand 🇳🇿||37.2%||Hydropower|
Iceland is the only country to have sourced over 80% of its energy from alternative sources over 2009-2018. In general, developed European countries are leading the charge—with Iceland, Norway, Sweden, Switzerland, and France making the top five.
The dominance of hydropower is notable, and so is the lack of wind and solar energy sources. Denmark had the highest percentage of wind energy in its mix, with 14.5%, whereas Italy had the highest percentage of solar, with just 2.4%.
It should be kept in mind that this percentage does not account for population differences. For example, although Italy boasted the highest percentage of solar in its energy mix with 2.4%, China consumed the most amount of energy from solar sources—despite it accounting for only 0.3% of total Chinese energy consumption.
Nevertheless, the costs of solar and wind energy have been falling continuously, and the potential for growth in the renewable energy sector is higher than ever.
The Transition to Renewables: Are We On Track?
Since the Industrial Revolution, fossil fuels have been the primary source of energy worldwide. More recently, the use of renewable energy sources has increased, but not substantially enough.
This predominant reliance on fossil fuels is not doing the transition to renewable energy any favors, but it shines a light on the massive untapped potential for alternative energies, especially in the developing world.
With the prices of renewable energy at record lows and increasing investment flows, the next decade will be a defining one for the global transition to clean energy.
Correction: A modified version of Brian Moore’s visualization was previous published here. We’ve since updated it to the original design.
A Global Breakdown of Greenhouse Gas Emissions by Sector
A Global Breakdown of Greenhouse Gas Emissions by Sector
In a few decades, greenhouse gases (GHGs)—chiefly in the form of CO₂ emissions—have risen at unprecedented rates as a result of global growth and resource consumption.
To uncover the major sectors where these emissions originate, this graphic from Our World in Data pulls the latest data from 2016 courtesy of Climate Watch and the World Resources Institute, when total emissions reached 49.4 billion tonnes of CO₂ equivalents (CO₂e).
Sources of GHG Emissions
Global GHG emissions can be roughly traced back to four broad categories: energy, agriculture, industry, and waste. Overwhelmingly, almost three-quarters of GHG emissions come from our energy consumption.
|Sector||Global GHG Emissions Share|
|Agriculture, Forestry & Land Use||18.4%|
Within each category, there are even more granular breakdowns to consider. We’ll take a closer look at the top two, which collectively account for over 91% of global GHG emissions.
Within this broad category, we can further break things down into sub-categories like transport, buildings, and industry-related energy consumption, to name a few.
|Sub-sector||GHG Emissions Share||Further breakdown|
|Transport||16.2%||• Road 11.9%
• Aviation 1.9%
• Rail 0.4%
• Pipeline 0.3%
• Ship 1.7%
|Buildings||17.5%||• Residential 10.9%
• Commercial 6.6%
|Industry energy||24.2%||• Iron & Steel 7.2%
• Non-ferrous metals 0.7%
• Machinery 0.5%
• Food and tobacco 1.0%
• Paper, pulp & printing 0.6%
• Chemical & petrochemical (energy) 3.6%
• Other industry 10.6%
|Agriculture & Fishing energy||1.7%||-|
|Unallocated fuel combustion||7.8%||-|
|Fugitive emissions from energy production||5.8%||• Coal 1.9%
• Oil & Natural Gas 3.9%
Billions of people rely on petrol and diesel-powered vehicles to get around. As a result, they contribute to almost 12% of global emissions.
But this challenge is also an opportunity: the consumer adoption of electric vehicles (EVs) could significantly help shift the world away from fossil fuel use, both for passenger travel and for freight—although there are still speedbumps to overcome.
Meanwhile, buildings contribute 17.5% of energy-related emissions overall—which makes sense when you realize the stunning fact that cities use 60-80% of the world’s annual energy needs. With megacities (home to 10+ million people) ballooning every day to house the growing urban population, these shares may rise even further.
Agriculture, Forestry & Land Use
The second biggest category of emissions is the sector that we rely on daily for the food we eat.
Perhaps unsurprisingly, methane from cows and other livestock contribute the most to emissions, at 5.8% total. These foods also have some of the highest carbon footprints, from farm to table.
|Sub-sector||GHG Emissions Share|
|Livestock & Manure||5.8%|
Another important consideration is just how much land our overall farming requirements take up. When significant areas of forest are cleared for grazing and cropland, there’s a clear link between our land use and rising global emissions.
Although many of these energy systems are still status quo, the global energy mix is ripe for change. As the data shows, the potential points of disruption have become increasingly clear as the world moves towards a green energy revolution.
For a different view on global emissions data, see which countries generate the most CO₂ emissions per capita.
Mainstream EV Adoption: 5 Speedbumps to Overcome
The pace of mainstream EV adoption has been slow, but is expected to accelerate as automakers overcome these five critical challenges.
Mainstream EV Adoption: 5 Speedbumps to Overcome
Many would agree that a global shift to electric vehicles (EV) is an important step in achieving a carbon-free future. However, for various reasons, EVs have so far struggled to break into the mainstream, accounting for just 2.5% of global auto sales in 2019.
To understand why, this infographic from Castrol identifies the five critical challenges that EVs will need to overcome. All findings are based on a 2020 survey of 10,000 consumers, fleet managers, and industry specialists across eight significant EV markets.
The Five Challenges to EV Adoption
Cars have relied on the internal combustion engine (ICE) since the early 1900s, and as a result, the ownership experience of an EV can be much more nuanced. This results in the five critical challenges we examine below.
Challenge #1: Price
The top challenge is price, with 63% of consumers believing that EVs are beyond their current budget. Though many cheaper EV models are being introduced, ICE vehicles still have the upper hand in terms of initial affordability. Note the emphasis on “initial”, because over the long term, EVs may actually be cheaper to maintain.
Taking into account all of the running and maintenance costs of [an EV], we have already reached relative cost parity in terms of ownership.
—President, EV consultancy, U.S.
For starters, an EV drivetrain has significantly fewer moving parts than an ICE equivalent, which could result in lower repair costs. Government subsidies and the cost of electricity are other aspects to consider.
So what is the tipping price that would convince most consumers to buy an EV? According to Castrol, it differs around the world.
|Country||EV Adoption Tipping Price ($)|
Many budget-conscious buyers also rely on the used market, in which EVs have little presence. The rapid speed of innovation is another concern, with 57% of survey respondents citing possible depreciation as a factor that prevented them from buying an EV.
Challenge #2: Charge Time
Most ICE vehicles can be refueled in a matter of minutes, but there is much more uncertainty when it comes to charging an EV.
Using a standard home charger, it takes 10-20 hours to charge a typical EV to 80%. Even with an upgraded fast charger (3-22kW power), this could still take up to 4 hours. The good news? Next-gen charging systems capable of fully charging an EV in 20 minutes are slowly becoming available around the world.
Similar to the EV adoption tipping price, Castrol has also identified a charge time tipping point—the charge time required for mainstream EV adoption.
|Country||Charge Time Tipping Point (minutes)|
If the industry can achieve an average 31 minute charge time, EVs could reach $224 billion in annual revenues across these eight markets alone.
Challenge #3: Range
Over 70% of consumers rank the total range of an EV as being important to them. However, today’s affordable EV models (below the average tipping price of $35,947) all have ranges that fall under 200 miles.
Traditional gas-powered vehicles, on the other hand, typically have a range between 310-620 miles. While Tesla offers several models boasting a 300+ mile range, their purchase prices are well above the average tipping price.
For the majority of consumers to consider an EV, the following range requirements will need to be met by vehicle manufacturers.
|Country||Range Tipping Point (miles)|
Fleet managers, those who oversee vehicles for services such as deliveries, reported a higher average EV tipping range of 341 miles.
Challenge #4: Charging Infrastructure
Charging infrastructure is the fourth most critical challenge, with 64% of consumers saying they would consider an EV if charging was convenient.
Similar to charge times, there is much uncertainty surrounding infrastructure. For example, 65% of consumers living in urban areas have a charging point within 5 miles of their home, compared to just 26% for those in rural areas.
Significant investment in public charging infrastructure will be necessary to avoid bottlenecks as more people adopt EVs. China is a leader in this regard, with billions spent on EV infrastructure projects. The result is a network of over one million charging stations, providing 82% of Chinese consumers with convenient access.
Challenge #5: Vehicle Choice
The least important challenge is increasing the variety of EV models available. This issue is unlikely to persist for long, as industry experts believe 488 unique models will exist by 2025.
Despite variety being less influential than charge times or range, designing models that appeal to various consumer niches will likely help to accelerate EV adoption. Market research will be required, however, because attitudes towards EVs vary by country.
|Country||Consumers Who Believe EVs Are More Fashionable Than ICE Vehicles (%)|
A majority of Chinese and Indian consumers view EVs more favorably than traditional ICE vehicles. This could be the result of a lower familiarity with cars in general—in 2000, for example, China had just four million cars spread across its population of over one billion.
EVs are the least alluring in the U.S. and Norway, which coincidentally have the highest GDP per capita among the eight countries surveyed. These consumers may be accustomed to a higher standard of quality as a result of their greater relative wealth.
So When Do EVs Become Mainstream?
As prices fall and capabilities improve, Castrol predicts a majority of consumers will consider buying an EV by 2024. Global mainstream adoption could take slightly longer, arriving in 2030.
Caution should be exhibited, as these estimates rely on the five critical challenges being solved in the short-term future. This hinges on a number of factors, including technological change, infrastructure investment, and a shift in consumer attitudes.
New challenges could also arise further down the road. EVs require a significant amount of minerals such as copper and lithium, and a global increase in production could put strain on the planet’s limited supply.
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