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A commercial plane takes off after sunset from Geneva Airport, Switzerland.
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From the Wright brothers’ historic flight in 1903 to the development of supersonic aircraft, the history of aviation has been driven by technology and ambition.

Now, as the 21st century progresses, the sector continues to show its appetite for innovation and radical design.

Last September, for instance, a hydrogen fuel-cell plane capable of carrying passengers took to the skies over England for its maiden flight.

The same month also saw Airbus release details of three hydrogen-fueled concept planes, with the European aerospace giant claiming they could enter service by the year 2035.

More recently, United Airlines announced it had signed a commercial agreement to purchase aircraft from a firm called Boom Supersonic.

In a statement, United said the Overture aircraft — which is yet to be built — was set to be “optimized to run on 100% sustainable aviation fuel.”

All of the above are linked by a focus on technologies designed to reduce aviation’s environmental footprint. This represents a major task, even if the number of flights last year slumped due to the coronavirus pandemic.

According to the International Energy Agency, carbon dioxide emissions from aviation “have risen rapidly over the past two decades,” hitting almost 1 gigatonne in 2019. This, it notes, equates to “about 2.8% of global CO2 emissions from fossil fuel combustion.”

Elsewhere, the World Wildlife Fund describes aviation as “one of the fastest-growing sources of the greenhouse gas emissions driving global climate change.” It adds that air travel is “currently the most carbon intensive activity an individual can make.”

A variety of solutions

Iain Gray is director of aerospace at the U.K.’s Cranfield University. In a phone interview with CNBC, he described zero carbon as “the top priority” for the industry and sought to emphasize the importance of developing a range of solutions to tackle the challenge.

“The really big technology driver is around the propulsion system,” he explained, “but that doesn’t take away from the importance of new technologies around … new lightweight materials, enhanced carbon composite materials, and the systems itself.”

Expanding on his point, Gray provided an example of why the innovations on planes flying above our heads should not be viewed in isolation. 

“There’s a lot of effort goes into reducing the weight on an aeroplane for it only to spend half an hour circling an airport,” he said.

“So the whole interaction of air traffic management with the aircraft itself is a … very important development and new technologies on airspace management are emerging all the time.”

The power of propulsion

Alongside the development of hydrogen fuel-cell planes there’s also been a lot of discussion around electric propulsion in recent years, with firms such as Volocopter and Lilium developing eVTOL, or electric vertical take-off and landing aircraft.

The key with technologies such as these is the types of journeys to which they can be applied.

“If you look at hydrogen fuel cells and you look at batteries, that really is very much aimed at the smaller aircraft, that’s the sub 1,000 kilometer range,” Cranfield’s Iain Gray said.

“You have to do that in a zero carbon way, there’s no question,” he added. “Is that going to make a big difference to the overall CO2 contributions that aviation makes? No.”

“We need to focus on the longer range flights, flights greater than 1,000 kilometers, flights greater than 3,000 kilometers in particular.”

Fueling change

This focus on long-haul trips will be important in the years ahead, even though they make up a small proportion of flights.  

According to a sustainability briefing from Eurocontrol published earlier this year, “some 6% of flights from European airports were long-haul” in 2020, measuring over 4,000 kilometers (around 2,485 miles) in length.

The intergovernmental organization went on to state that “more than half of European aviation’s CO2 emissions were from this tiny proportion of the overall number of flights.”

This viewpoint was echoed by Jo Dardenne, aviation manager at Transport & Environment, a campaign group headquartered in Brussels.

“We shouldn’t forget that the biggest chunk of aviation emissions are linked to long haul flights because you fly longer, you fly higher,” she told CNBC.

“So all in all you’re producing more CO2 … those long haul flights can only be decarbonized by replacing the kerosene that they’re using.”

It’s on these longer journeys that sustainable aviation fuel could have a significant role to play in the future.

Although the European Union Aviation Safety Agency says there’s “not a single internationally agreed definition” of sustainable aviation fuel, the overarching idea is that it can be used to reduce an aircraft’s emissions.

For its part, Airbus describes SAF as being “made from renewable raw material.” It adds that the most common feedstocks are based on crops or used cooking oil and animal fat.

“Currently, the big challenges of sustainable aviation fuel are producing it in the right volumes that are required, and at the right cost point,” Cranfield’s Gray said.

The provenance of feedstocks used for SAF is also important, he explained. “If what you’re doing … to produce sustainable aviation fuel is transporting fuel right across the world using feedstocks from the other side of the planet, then is it really sustainable?”

“The big effort at the moment is looking at how you can produce sustainable aviation fuels in a …  green way.” This could be fuel from waste or local resources, Gray added.

One type of fuel generating interest is e-kerosene, which also goes by the name of synthetic kerosene. According to a briefing from T&E published in February, e-kerosene is produced by combining carbon dioxide and hydrogen.

“What’s great about it is that it can be dropped into these jets without any modification of the engine and of the technology of the plane,” Dardenne said.  

“It’s a carbon neutral fuel, it’s something that can be easily dropped in,” she added. “The only problem is that it’s very expensive.”

Driving cost down will indeed be key in the years ahead, but organizations like T&E are keen to emphasize the potential environmental benefits of using it.

If the CO2 is “captured from the atmosphere” and hydrogen produced using renewables, T&E says “the combustion of e-kerosene will, apart from some residual emissions, be close to CO2 neutral.”

The future

While technology may be developing, the world also needs to come up with rules and regulations focused on the environmental footprint of air travel. 

Examples of these efforts include the Carbon Offsetting and Reduction Scheme for International Aviation and the European Union including carbon dioxide emissions from aviation in its emissions trading system since the year 2012.

In her interview with CNBC, T&E’s Dardenne stressed the importance of “proper regulation.”

She said: “If you price emissions and pollution effectively, then mandate the use of clean technologies, you send the right signals to investors, private and public, to invest in them.” 

“The clearer the regulatory framework the more certainty you can provide to the market that these technologies will have a future,” she added.

“And that will actually bring added value, financial added value, as well as environmental added value.”

Looking at the bigger picture, she went on to state that “proper regulation” would come via effective carbon pricing and fuel mandates, describing the latter as an obligation to use clean fuels. These were, she argued, “the cornerstone of effective aviation decarbonization strategy.”

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BYD’s new EV plant in Brazil suddenly halted over ‘slavery’ worker conditions [Update]

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BYD's new EV plant in Brazil suddenly halted over 'slavery' worker conditions [Update]

Construction at BYD’s new EV plant in Brazil was suddenly halted Monday after authorities found Chinese workers in “slavery-like” conditions. The workers were hired in China by another firm, and BYD has since cut ties. BYD and the firm are now saying the term “slavery” was unjustly used, and some translations may have been misunderstood.

Why construction at BYD’s EV plant in Brazil is halted

Updated 12/26/24: This article has been updated with the latest information, including a statement from Jinjiang Group and comments from BYD’s general manager of public relations, Li Yunfei. Read more below.

According to a statement from the Public Ministry of Labor (MPT), 163 workers at the construction site of BYD’s new EV plant in Salvador, Brazil, were “being held in conditions analogous to slavery.”

Construction on the site was halted on Monday after the findings. According to the authorities, Jinjiang Group, one of the contractors BYD hired to build the new EV plant, hired the workers in China.

BYD released a statement saying it has cut ties with Jinjiang and is assisting the victims as it works with Brazilian authorities. All workers will be transferred to hotels. They will not be able to work and will have their contracts terminated.

Alexandre Baldy, senior vice president of BYD Brazil, said the company remains “committed to full compliance with Brazilian legislation, especially with regard to the protection of workers’ rights and human dignity.”

BYD's-EV-plant-Brazil-halted
BYD Dolphin Mini (Seagull) launch in Brazil (Source: BYD)

The MPT statement detailed the extreme “slavery-like” worker conditions. For example, they had one bathroom for every 31 workers, forcing them to wake up at 4 am to get in line to be ready for work at 5:30 am. They slept without mattresses on the bed, and the kitchens operated in “alarming conditions.”

If a worker quit after six months, they would leave the country without any pay after factoring in the cost of a round-trip airplane ticket.

BYD-Shark-Brazil
BYD Shark PHEV pickup (Source: BYD)

BYD said it has held a “detailed review” over the past few weeks. The Chinese EV giant asked Jinjiang several times to improve the conditions.

A joint virtual hearing of the MPT and MTE is scheduled for December 26. The MPT said the need for new “on-site inspections” has not been ruled out. BYD’s new EV plant is set to begin production next year. Check back soon for more updates on the situation.

Update 12/26/24: Jinjian Group said the portrayal of its employees working in “slavery-like” conditions was inconsistent, and some of the translations may have been misunderstood.

“Being unjustly labeled as ‘enslaved’ has made our employees feel that their dignity has been insulted and their human rights violated, seriously hurting the dignity of the Chinese people,” Jinjiang said in a social media post (via Reuters). The company issued a joint letter to issue an apology.

BYD’s general manager of public relations, Li Yunfei, reposted the statement. Li added that “foreign forces” and some other members of the media were “deliberately smearing Chinese brands.

Mao Ning, a spokesperson for China’s foreign ministry, said the Chinese embassy in Brazil was in talks with leaders in the region to verify the accusations.

BYD is already a top-selling EV brand in Brazil. In October, it launched its first pickup, the Shark PHEV. The pickup is BYD’s sixth vehicle in Brazil, joining other popular models like the Dolphin Mini (Seagull), Yuan Plus, and Dolphin.

Once up and running, which was expected later this year or early 2025, BYD’s Brazil plant will have an annual production capacity of 150,000 vehicles.

Source: Bloomberg, Brazil Public Ministry of Labor

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Tesla is rumored to have signed battery cell supply agreement with EVE

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Tesla is rumored to have signed battery cell supply agreement with EVE

Tesla is rumored to have signed a battery cell supply agreement with EVE Energy, a Chinese battery cell manufacturer.

For years, Tesla has been increasing the percentage of its electric vehicles powered by LFP battery cells.

Lithium iron phosphate (LFP) is cheaper than the nickel-rich alternative, but they have lower energy density – resulting in a shorter range.

Over the last few years, LFP energy density has increased enough to make sense in cheaper electric vehicles.

Tesla has been buying LFP battery cells from China’s CATL and BYD.

In 2021, there were rumors that Tesla was in discussions with EVE Energy, another Chinese battery cell manufacturer, to source LFP battery cells.

Now, three years later, it sounds like a deal has been made.

Chinese media are reporting that Eve and Tesla have signed an agreement for Tesla to get cells from a Malaysian factory starting in 2026 (via CNEV Post):

Eve Energy has reached a supply agreement with Tesla for energy storage batteries, and its Malaysian factory is expected to start supplying energy storage batteries to Tesla US in 2026, according to a report in Chinese media outlet LatePost today.

Eve confirmed that it recently signed a deal with “a customer in the Americas” without confirming the customer, but LatePost reached out to them when reporting that Tesla was the customer, and they didn’t confirm nor deny it.

For the longest time, Tesla only had Panasonic as its battery cell supplier. The automaker pioneered using cylindrical li-ion cells in electric vehicles. Prior to Tesla, they were primarily used in personal electronics, like laptops.

At the time, Panasonic was the only cell manufacturer willing to put its cells in Tesla vehicles.

Over the last few years, Tesla has greatly increased its battery cell suppliers, adding contracts with CATL, LG, BYD, Samsung, and now apparently Eve Energy.

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‘Like your Tesla rental? Want to keep it?’ Hertz is trying to unload its Tesla cars on renters

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'Like your Tesla rental? Want to keep it?' Hertz is trying to unload its Tesla cars on renters

Hertz is trying to sell its Tesla cars to renters as it desperately tries to unload its electric vehicle inventory after a massive drop in value.

In 2021, Hertz made a major move to electrify its fleet, ordering 100,000 Tesla Model 3s and later adding Model Ys. This Tesla fleet boosted Hertz’s customer satisfaction, but issues soon arose when Tesla cut prices on the Model 3 and Model Y in 2022 and 2023, sharply reducing resale values.

This hit Hertz hard, as it relies on fleet value for its financial health. While the Model 3 held up to 90% of its value within three years as of 2020, more recent declines saw nearly 50% of that value erased, with Model Y values dropping even more.

To mitigate losses, Hertz announced plans to sell about 20,000 Teslas early this year and ramped that up recently.

You can get some exceptionally cheap Tesla vehicles on Hertz’s website. Of course, they have high mileages over short periods of time and they have been farted in by god knows how many people, but for as low as $17,000 and still under powertrain warranty, it’s not necessarily a bad deal.

But it looks like Hertz is having some issues selling those used Tesla vehicles.

The car rental company has started a new program to reach out to people who are renting its Tesla vehicles to try to get them to keep them.

A recent Hertz renter shared on Reddit an offer that the rental company sent him about keeping his Tesla Model 3 after his rental.

Hertz offered him to buy the 2023 Model 3 with 30,000 miles for just short of $18,000:

More people have received similar offers as per social media posts. It looks like a new program from Hertz to try to unload their Tesla inventory.

Electrek’s Take

These are not necessarily bad deals, but you shouldn’t expect “like new” cars. People tend not to take good care of rental cars.

But it might be a good solution for used car buyers looking to go electric.

At the cost and with fuel savings, this is basically a $12,000 vehicle over a few years.

When buying a cheap used EV, there’s no better way to charge it than with cheap solar power. If you want to make sure you’re finding a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage. EnergySage is a free service that makes it easy for you to go solar – whether you’re a homeowner or renter. They have hundreds of pre-vetted solar installers competing for your business, including some who install Tesla products like Powerwalls. They ensure you get high-quality solutions and save 20 to 30% compared to going it alone. Plus, it’s free to use and you won’t get sales calls until you select an installer and you share your phone number with them.

Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.

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