Energy
Animation: How Wind Turbines Work
The windmill, which converts wind into rotational energy to mill grain or pump water, has been around since antiquity. It’s even been claimed that Ancient Babylonians planned to harness wind as early as almost 4,000 years ago, as part of a scheme for one of Hammurabi’s ambitious irrigation projects.
By the end of the 19th century, wind energy took on a whole new meaning as engineers in Scotland, Denmark, and the United States invented the first wind turbines that generated electricity. Many technological improvements have been made since, and now modern wind farms dot the landscapes of countries around the world.
Related Topic: What it Would Take to Power New York City
Today, wind power is an important element of the green energy mix, and its estimated that 432 GW of wind farms are installed globally. In the United States, nearly 5% of all power is now generated by wind.
How Wind Turbines Work
How do these massive propellers get into motion? Once they are turning, what do they do?
As shown in the animation, it’s all about the lift and drag forces created by the shape of the blades. Lift acts perpendicular to the direction of wind flow and drag acts parallel to the direction of wind flow.
The blades are designed so that when wind passes, a low-pressure pocket of air is created by faster moving wind on the curved side of the blade. This sucks the blade in the downwind direction, creating lift. The blades are then connected to a series of shafts that spin an electromagnetic induction generator, and this creates electricity.
There are some other bells and whistles that help to maximize efficiency in a modern wind turbine as well.
The anemometer measures wind speed, while the controller starts and stops the turbines to operate only at desirable wind speeds (between 8 and 55 kmph). The wind vane measures the wind’s direction and communicates this information to the yaw drive, which helps make adjustments to the turbine’s orientation. Lastly, there is also a braking system installed which can be used for emergency stops when wind speeds get too extreme.
Original graphic by: SaveOnEnergy
Energy
Charted: 4 Reasons Why Lithium Could Be the Next Gold Rush
Visual Capitalist has partnered with EnergyX to show why drops in prices and growing demand may make now the right time to invest in lithium.
4 Reasons Why You Should Invest in Lithium
Lithium’s importance in powering EVs makes it a linchpin of the clean energy transition and one of the world’s most precious minerals.
In this graphic, Visual Capitalist partnered with EnergyX to explore why now may be the time to invest in lithium.
1. Lithium Prices Have Dropped
One of the most critical aspects of evaluating an investment is ensuring that the asset’s value is higher than its price would indicate. Lithium is integral to powering EVs, and, prices have fallen fast over the last year:
| Date | LiOH·H₂O* | Li₂CO₃** |
|---|---|---|
| Feb 2023 | $76 | $71 |
| March 2023 | $71 | $61 |
| Apr 2023 | $43 | $33 |
| May 2023 | $43 | $33 |
| June 2023 | $47 | $45 |
| July 2023 | $44 | $40 |
| Aug 2023 | $35 | $35 |
| Sept 2023 | $28 | $27 |
| Oct 2023 | $24 | $23 |
| Nov 2023 | $21 | $21 |
| Dec 2023 | $17 | $16 |
| Jan 2024 | $14 | $15 |
| Feb 2024 | $13 | $14 |
Note: Monthly spot prices were taken as close to the 14th of each month as possible.
*Lithium hydroxide monohydrate MB-LI-0033
**Lithium carbonate MB-LI-0029
2. Lithium-Ion Battery Prices Are Also Falling
The drop in lithium prices is just one reason to invest in the metal. Increasing economies of scale, coupled with low commodity prices, have caused the cost of lithium-ion batteries to drop significantly as well.
In fact, BNEF reports that between 2013 and 2023, the price of a Li-ion battery dropped by 82%.
| Year | Price per KWh |
|---|---|
| 2023 | $139 |
| 2022 | $161 |
| 2021 | $150 |
| 2020 | $160 |
| 2019 | $183 |
| 2018 | $211 |
| 2017 | $258 |
| 2016 | $345 |
| 2015 | $448 |
| 2014 | $692 |
| 2013 | $780 |
3. EV Adoption is Sustainable
One of the best reasons to invest in lithium is that EVs, one of the main drivers behind the demand for lithium, have reached a price point similar to that of traditional vehicle.
According to the Kelly Blue Book, Tesla’s average transaction price dropped by 25% between 2022 and 2023, bringing it in line with many other major manufacturers and showing that EVs are a realistic transport option from a consumer price perspective.
| Manufacturer | September 2022 | September 2023 |
|---|---|---|
| BMW | $69,000 | $72,000 |
| Ford | $54,000 | $56,000 |
| Volkswagon | $54,000 | $56,000 |
| General Motors | $52,000 | $53,000 |
| Tesla | $68,000 | $51,000 |
4. Electricity Demand in Transport is Growing
As EVs become an accessible transport option, there’s an investment opportunity in lithium. But possibly the best reason to invest in lithium is that the IEA reports global demand for the electricity in transport could grow dramatically by 2030:
| Transport Type | 2022 | 2025 | 2030 |
|---|---|---|---|
| Buses 🚌 | 23,000 GWh | 50,000 GWh | 130,000 GWh |
| Cars 🚙 | 65,000 GWh | 200,000 GWh | 570,000 GWh |
| Trucks 🛻 | 4,000 GWh | 15,000 GWh | 94,000 GWh |
| Vans 🚐 | 6,000 GWh | 16,000 GWh | 72,000 GWh |
The Lithium Investment Opportunity
Lithium presents a potentially classic investment opportunity. Lithium and battery prices have dropped significantly, and recently, EVs have reached a price point similar to other vehicles. By 2030, the demand for clean energy, especially in transport, will grow dramatically.
With prices dropping and demand skyrocketing, now is the time to invest in lithium.
EnergyX is poised to exploit lithium demand with cutting-edge lithium extraction technology capable of extracting 300% more lithium than current processes.
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