Back in August of 2021, we compared NCA (lithium nickel cobalt aluminum oxide) batteries with LFP (lithium iron phosphate) batteries - "Tesla's LFP (iron) batteries compared. Which one should you buy?". NCA batteries had been the standard for all Tesla models in the USA, but Tesla’s plans to switch to LFP in Model 3s and Model Ys prompted that article. Tesla even offered more rapid delivery to customers waiting for the cars they had on order if they decided to get their car with LFP batteries.
A nickel mine in Indonesia
There are trade-offs between these two battery types in terms of weight, range, consequences of carrying a full charge, regenerative braking, and cold weather behavior which are all discussed in the column mentioned above. These are all valid considerations, but working from the assumption that a prime motivation of most people buying an electric car is to promote a healthy environment and a healthier planet (by cutting CO2 emissions), it should also be mentioned that these two battery chemistries have vastly different implications for the environment. Crucially, NCA batteries are built with a lot of nickel (about 18 kg in a Tesla) whereas LFP batteries have none. But high demand for nickel for Teslas (and many other electric vehicle models) is accelerating strip-mining in Indonesia and the Philippines. Mining is one thing, but strip mining is more problematic.
Strip mining on tropical islands in Southeast Asia is especially harmful because these are centers of biodiversity with large numbers of unique species of plants and animals, many of which are endangered - some critically so. Unlike forest clearing, where the land retains some value for agricultural production, strip mining obliterates what is there and it will likely be decades, if not centuries, before such areas are productive again. When not rainforests, this strip mining is destroying agricultural land. Plus, Southeast Asia has high rainfall, so once the land is laid bare, erosion carries large amounts of sediment onto nearby coral reefs.
Details matter, however, and in this case it should be pointed out that nickel is mined from two sources - laterite and sulfide. Laterite deposits (as in Indonesia and the Philippines) are formed by the weathering of ultramafic bedrock in areas of high seasonal rainfall, along ridges and mountain shoulders. Through leaching, nickel accumulates 10-25 m below the surface and the only way to get at it is to clear off the top 10 m and everything living there.
In contrast, sulfide deposits are in the bedrock and nickel is extracted by hard-rock mining, sometimes near the surface, but often far underground. This distinction is important for electric vehicles because sulfide deposits are smelted into the highly pure nickel which is required for batteries. When laterite nickel is smelted, the lower purity nickel primarily goes to other uses, such as stainless steel. However, if laterite nickel is processed by High Pressure Acid Leaching (HPAL), nickel of sufficient purity for batteries is produced, but at present not very much is produced this way. Of the other uses of nickel besides for batteries, some processes also need high purity nickel, but some can use either high or lower purity nickel. Another important point is that there are not likely prospects for increased production of sulfide nickel, whereas there are extensive areas available for mining laterite nickel.
This may all seem convoluted, but what this all means is 1) as consumption of sulfide nickel for batteries grows with the expansion of the electric vehicle market, this will take up more and more of available sulfide supplies; 2) processes which can use either will hence shift to laterite nickel. Thus, while some may point out that electric vehicle batteries, for the most part, do not use laterite nickel and hence are not the cause of the expanding strip-mining occurring in Indonesia and the Philippines (and in a few other places such as Venezuela and Brazil), it is nevertheless true that additional demand for laterite nickel is a consequence of vehicle batteries taking an increasingly large portion of the available sulfide nickel.
Despite much press coverage last year, Tesla's transition to LFP batteries has only made it to the Model 3 Rear Wheel Drive model (in the USA). Other models may get LFP batteries in the future, as they have in Europe. So, buying a Tesla is a great way to contribute to the decarbonization of your personal transportation, but to avoid the harmful impacts of high-nickel battery chemistries, lithium iron phosphate (LFP) is the best, even if you have to be selective as to which model you get.
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Tesla recently showed off Giga Small Haus, an interesting new display project hosted at Giga Berlin. The small new house is located just outside the main entrance of Tesla’s Giga Berlin factory, with a Quicksilver Model Y parked inside.
Giga Small Haus is powered only by solar and Powerwall 3 - disconnected from the local grid and from Giga Berlin itself. It serves as a live demonstration of Tesla Solar and Tesla’s Powerwall battery backup.
Giga Small Haus
The centerpiece of the display is a Model Y in Quicksilver - a beautiful pick for a beautifully lit house. However, that’s not the real focus here - it's the Powerwall and Gateway on the wall.
The Powerwall is the focus of Giga Small Haus, and there’s a display with some additional information on the wall. Part of the display also includes a screen that displays the current output of the Powerwall itself versus the consumption of Giga Small Haus, as well as the input from solar.
The interior exhibit of Giga Small Haus
Not a Tesla App
The text on the exhibit is divided into several sections. Here’s a translated and edited version of what we can see from Tesla’s images. Some additional text is obscured. If someone visits Giga Small Haus, let us know.
Powerwall
Powerwall is a home battery system that stores energy from solar panels, the electrical grid, or during off-peak hours and powers your home during the day or during a power outage.
With Powerwall, you can use self-generated solar energy during the day and night, thus avoiding high electricity costs. You can also store excess energy produced during sunny periods for use during times of low production or power outages.
Key Features
Energy Storage: Powerwall stores excess energy from solar panels or the grid for later use or during power outages.
Backup Power: In the event of a power outage, Powerwall automatically switches to battery power to ensure continuous power supply.
Integration: Powerwall can be seamlessly integrated with existing solar systems and other power sources.
Scalability: Multiple Powerwalls can be installed to meet higher energy storage needs.
Smart Energy Management: Powerwall works with Tesla's software to optimize energy consumption and reduce costs.
How Powerwall Works
Storage: During the day, when solar panels produce more energy than needed, the excess is stored in Powerwall.
Usage: At night or during times of low solar production, the stored energy is used to power the home, reducing reliance on the grid.
Backup: During a power outage, Powerwall automatically provides power to critical circuits, ensuring continuous operation of essential appliances.
Benefits
Cost Savings: By storing and using solar energy, you can reduce your electricity bills.
Reliability: Provides backup power during outages, ensuring your home remains powered.
Sustainability: Promotes the use of renewable energy by storing excess solar production for later use.
Overall, Giga Small Haus is an interesting real-life demo of what Powerwall and Solar can accomplish. It would be neat if Tesla built more of these displays - perhaps near major Delivery and Service Centers and at Giga Texas, Fremont, Giga Shanghai, and other facilities. Many Tesla owners have yet to learn about and experience some of Tesla’s Energy products.
Tesla has added the Acceleration Boost option to the Tesla store for owners of the 2024 Model 3 Long Range - specifically owners in Australia and China. Acceleration Boost is an upgrade that provides a significant performance boost, drastically narrowing the performance gap between the Long Range and Performance versions of the same model.
This upgrade will likely become available in Europe, Canada, and the United States in the next few days as Tesla updates its shops globally.
Acceleration Boost
This new Acceleration Boost is retailing for $3,000 AUD, or approximately $2,000 USD. That’s the same price for current owners of older Model 3 or Model Y Long Range vehicles, which all have the option to purchase Acceleration Boost through the shop.
The boost provides improved 0-100km/h (0-60mph) performance, bumping the 2024 Model 3 LR from 4.4s to 3.8s. The 2024 Performance version comes in at a blazing fast 2.9 seconds, so while it isn’t equivalent to just buying a performance variant in the first place, it is still a noticeable and significant upgrade.
Performance variants also come with a different front fascia vent for cooling, performance drive units, sport seats, adaptive suspension, 20-inch wheels, and Track Mode V3. That’s a significant number of additional features in the $10,000 USD price difference between the Long Range and Performance versions.
Should You Buy It?
If you’ve purchased a Long Range model and are itching to go just that little bit faster at every red light, this is the upgrade for you. It previously came with the cost of slightly reducing vehicle range, but the Tesla store doesn’t make a note of reduced range this time around. The 2023 Model 3 and Model Y Long Range models had an efficiency loss of about 5% due to the additional always-available acceleration and cooling.
You could drive in Chill mode to mostly negate that efficiency loss, but what’s the fun in driving in Chill when you just got Acceleration Boost? Anyhow, the shop listing for the 2024 variant doesn’t include this detail, so it's possible Tesla may have worked some more engineering magic.
Overall, if you’ve got the $3,000 AUD burning a hole in your pocket, some Tesla referral credits sitting around, or just want to go faster, it's definitely an upgrade many users find valuable.
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