Energy Shift
The Safest Source of Energy Will Surprise You
The World’s Safest Source of Energy Will Surprise You
When it comes to conversations on energy, it’s hard to leave your feelings at the door.
It’s arguable that energy is the single most important driver of human progress – it’s a multi-trillion dollar industry that powers our daily lives, technological advancements, and even the economic development of entire countries. At the same time, our choices around energy can have significant consequences. How we decide to generate energy can decimate the environment, fuel political conflicts, and even cause human deaths as unwelcome side effects.
The outcomes from our choices around energy are so vivid, that we’ve developed strong and polarized associations with the subject at hand.
The Empirical Perspective
Today’s visualization on the safest sources of energy comes to us from Cambridge House, the company hosting the International Mining Investment Conference 2018 on May 15-16 in Vancouver, BC, and it uses an empirical approach to compare different energy sources with one another.
Based on the data, this comparison provides a perspective that will be surprising to many viewers. Despite its perceived dangers, nuclear is actually the safest type of energy.
Energy Source | Deaths per 1,000 TWh | % of Global Primary Energy Supply (2015) |
---|---|---|
Coal | 100,000 | 28.1% |
Oil | 36,000 | 31.7% |
Natural Gas | 4,000 | 21.6% |
Hydro | 1,400 | 2.5% |
Solar | 440* | <1% |
Wind | 150 | <1% |
Nuclear | 90 | 4.9% |
That’s right – even when including seemingly catastrophic incidents such as Chernobyl and Fukushima in the calculations, the math says that the amount of energy generated by nuclear is so vast that it more than outweighs these incidents over the long-term.
The reality is that nuclear energy is much more comparable to renewables like solar or wind, in terms of safety. More importantly, it’s on the polar opposite of the spectrum from coal, which manages to kill 4,400 people daily in China alone.
The Nuclear Option
Interestingly, multiple studies have come to this exact same conclusion, including the ones used in an analysis by economist Max Roser’s project called Our World in Data.
Even though the conclusion on nuclear is pretty cut and dry, it’s still hard to absorb. After all, the relative safety of nuclear ends up being extremely counter-intuitive to our human brains, which are seemingly wired to put more weight on big, memorable events (i.e. Chernobyl) rather than slow, consistent deaths that occur over time with other energy sources.
Today, nuclear provides about 11% of the world’s electricity from about 450 power reactors, generating about 2,500 TWh of electricity each year.
And while there are still questions that remain – specifically revolving around how to store certain types of nuclear waste – the above data explains why the majority of scientists classify nuclear as a sustainable and safe energy source, along with other renewables.
This post originally appeared on Visual Capitalist’s new VC Metals channel, home to data-driven visual content on metals, commodities, and energy.
Energy Shift
How Many New Mines Are Needed for the Energy Transition?
Copper and lithium will require the highest number of new mines.

How Many New Mines Are Needed for the Energy Transition?
Nearly 300 Mines
According to Benchmark Mineral Intelligence, meeting global battery demand by 2030 would require 293 new mines or plants.
Mineral | 2024 Supply (t) | 2030 Demand (t) | Supply Needed (t) | No. of Mines/Plants | Type |
---|---|---|---|---|---|
Lithium | 1,181,000 | 2,728,000 | 1,547,000 | 52 | Mine |
Cobalt | 272,000 | 401,000 | 129,000 | 26 | Mine |
Nickel | 3,566,000 | 4,949,000 | 1,383,000 | 28 | Mine |
Natural Graphite | 1,225,000 | 2,933,000 | 1,708,000 | 31 | Mine |
Synthetic Graphite | 1,820,000 | 2,176,000 | 356,000 | 12 | Plant |
Manganese | 90,000 | 409,000 | 319,000 | 21 | Plant |
Purified Phosphoric Acid | 6,493,000 | 9,001,000 | 2,508,000 | 33 | Plant |
Copper | 22,912,000 | 26,576,000 | 3,664,000 | 61 | Mine |
Rare Earths | 83,711 | 116,663 | 32,952 | 29 | Mine |
Copper, used in wires and other applications, and lithium, essential for batteries, will require the most significant number of new mines.
Manganese production would need to increase more than fourfold to meet anticipated demand.
Not an Easy Task
Building new mines is one of the biggest challenges in reaching the expected demand.
After discovery and exploration, mineral projects must go through a lengthy process of research, permitting, and funding before becoming operational.
In the U.S., for instance, developing a new mine can take 29 years.
In contrast, Ghana, the Democratic Republic of Congo, and Laos have some of the shortest development times in the world, at roughly 10 to 15 years.
Energy Shift
Visualizing Europe’s Dependence on Chinese Resources
Europe depends entirely on China for heavy rare earth elements, critical for technologies such as hybrid cars and fiber optics.

Visualizing Europe’s Dependence on Chinese Resources
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
Despite efforts by European countries to reduce their reliance on China for critical materials, the region remains heavily dependent on Chinese resources.
This graphic shows the percentage of EU raw material supply sourced from China for 12 raw materials used in various industries. Bloomberg published this data in May 2024 based on European Commission research.
China’s Dominance in Clean Energy Minerals
Europe is 100% dependent on China for heavy rare earth elements used in technologies such as hybrid cars, fiber optics, and nuclear power.
Additionally, 97% of the magnesium consumed in Europe, for uses ranging from aerospace alloys to automotive parts, comes from the Asian country.
Raw Material | Percentage Supplied by China | Usage |
---|---|---|
Heavy rare earth elements | 100% | nuclear reactors, TV screens, fiber optics |
Magnesium | 97% | Aerospace alloys, automotive parts |
Light rare earth elements | 85% | Catalysts, aircraft engines, magnets |
Lithium | 79% | Batteries, pharmaceuticals, ceramics |
Gallium | 71% | Semiconductors, LEDs, solar panels |
Scandium | 67% | Aerospace components, power generation, sports equipment |
Bismuth | 65% | Pharmaceuticals, cosmetics, low-melting alloys |
Vanadium | 62% | Steel alloys, aerospace, tools |
Baryte | 45% | Oil and gas drilling, paints, plastics |
Germanium | 45% | Fiber optics, infrared optics, electronics |
Natural graphite | 40% | Batteries, lubricants, refractory materials |
Tungsten | 32% | Cutting tools, electronics, heavy metal alloys |
Almost 80% of the lithium in electric vehicles and electronics batteries comes from China.
Assessing the Risks
The EU faces a pressing concern over access to essential materials, given the apprehension that China could “weaponize” its dominance of the sector.
One proposed solution is the EU’s Critical Raw Materials Act, which entered into force in May 2024.
The act envisions a quota of 10% of all critical raw materials consumed in the EU to be produced within the EU.
Additionally, it calls for a significant increase in recycling efforts, totaling up to 25% of annual consumption in the EU. Lastly, it sets the target of reducing dependency for any critical raw material on a single non-EU country to less than 65% by 2030.
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