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Real-world driving and charging habits may make EV batteries last longer than researchers previously thought, finds a new Stanford-SLAC study.

A new study from the SLAC-Stanford Battery Center published on December 9 in Nature Energy suggests that real-world driving habits – like stop-and-go traffic, highway driving, quick city trips, and lots of time spent parked – could make EV batteries last about a third longer than previously thought. This means the average EV owner might not need to replace their battery pack or upgrade to a new car for several extra years, saving money and extending the life of their ride.

Battery scientists usually test new designs in labs by cycling them at a constant rate of discharge and recharge, speeding up the process to quickly see how long they’ll last and how well they perform. However, according to a new study published on December 9 in Nature Energy, that method doesn’t reflect how EV batteries are used in the real world.

For everyday EV commuters, this is big news. While battery prices have dropped by about 90% in the last 15 years, they still make up nearly a third of the cost of a new EV. The study suggests that current and future EV drivers could enjoy more miles before needing a replacement.

“We’ve not been testing EV batteries the right way,” said Simona Onori, senior author and an associate professor of energy science and engineering at the Stanford Doerr School of Sustainability. “To our surprise, real driving with frequent acceleration, braking that charges the batteries a bit, stopping to pop into a store, and letting the batteries rest for hours at a time helps batteries last longer than we had thought based on industry-standard lab tests.”

The researchers created four different EV discharge profiles, ranging from the usual constant discharge to more dynamic ones based on real-world driving data. Over two years, they tested 92 commercial lithium-ion batteries using these profiles. The results were clear: The closer the profiles matched actual driving behavior, the longer the batteries lasted.

So, what’s behind this surprising longevity? A machine learning algorithm trained on the mountain of collected data helped uncover how dynamic discharge patterns reduce battery degradation. Turns out, the way people actually drive might be easier on batteries than scientists expected.

For example, short, sharp accelerations in EVs actually slow down battery degradation. That flips the script on what researchers – including this study’s own team – had assumed for years: that acceleration spikes were a battery’s worst enemy.

Alexis Geslin, one of three lead authors of the study and a PhD student in materials science and engineering and in computer science in Stanford’s School of Engineering, explained:

We battery engineers have assumed that cycle aging is much more important than time-induced aging. That’s mostly true for commercial EVs like buses and delivery vans that are almost always either in use or being recharged.

For consumers using their EVs to get to work, pick up their kids, go to the grocery store, but mostly not using them or even charging them, time becomes the predominant cause of aging over cycling.

The study pinpointed a sweet spot for discharge rates that balances time aging and cycle aging – at least for the commercial battery they tested. That range aligns with how most people actually drive their EVs. Automakers could use this insight to tweak battery management software, helping to extend battery life and optimize performance for real-world driving.

Going forward, energy science and engineering postdoctoral scholar Le Xu notes, “Researchers can now revisit presumed aging mechanisms at the chemistry, materials, and cell levels to deepen their understanding. This will facilitate the development of advanced control algorithms that optimize the use of existing commercial battery architectures.”

Read more: Researchers develop EV battery that charges 0-80% in 15 minutes


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New DOE report finds 90% of wind turbine materials are recyclable

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New DOE report finds 90% of wind turbine materials are recyclable

The US Department of Energy (DOE) has released an encouraging new report revealing that 90% of wind turbine materials are already recyclable using existing infrastructure, but tackling the remaining 10% needs innovation.

That’s why the Biden administration’s Bipartisan Infrastructure Law has allocated over $20 million to develop technologies that address these challenges.

Why this matters

The wind energy industry is growing rapidly, but questions about what happens to turbines at the end of their life are critical. Recyclable wind turbines means not only less waste but also a more affordable and sustainable energy future.

According to Jeff Marootian, principal deputy assistant secretary for the Office of Energy Efficiency and Renewable Energy, “The US already has the ability to recycle most wind turbine materials, so achieving a fully sustainable domestic wind energy industry is well within reach.”

The report, titled, “Recycling Wind Energy Systems in the United States Part 1: Providing a Baseline for America’s Wind Energy Recycling Infrastructure for Wind Turbines and Systems,” identifies short-, medium-, and long-term research, development, and demonstration priorities along the life cycle of wind turbines. Developed by researchers at the National Renewable Energy Laboratory, with help from Oak Ridge and Sandia National Laboratories, the findings aim to guide future investments and technological innovations.

What’s easily recyclable and what’s not

The bulk of a wind turbine – towers, foundations, and steel-based drivetrain components – is relatively easy to recycle. However, components like blades, generators, and nacelle covers are tougher to process.

Blades, for instance, are often made from hard-to-recycle materials like thermoset resins, but switching to recyclable thermoplastics could be a game changer. Innovations like chemical dissolution and pyrolysis could make blade recycling more viable in the near future.

Critical materials like nickel, cobalt, and zinc used in generators and power electronics are particularly important to recover.

Key strategies for a circular economy

To make the wind energy sector fully sustainable, the DOE report emphasizes the adoption of measures such as:

  • Better decommissioning practices – Improving how turbine materials are collected and sorted at the end of their life cycle.
  • Strategic recycling sites – Locating recycling facilities closer to where turbines are decommissioned to reduce costs and emissions.
  • Advanced material substitution – Using recyclable and affordable materials in manufacturing.
  • Optimized material recovery Developing methods to make recovered materials usable in second-life applications.

Looking ahead

The DOE’s research also underscores the importance of regional factors, such as the availability of skilled workers and transportation logistics, in building a cost-effective recycling infrastructure. As the US continues to expand its wind energy capacity, these findings provide a roadmap for minimizing waste and maximizing sustainability.

More information about the $20 million in funding available through the Wind Turbine Technology Recycling Funding Opportunity can be found here. Submission deadline is February 11.

Read more: The California grid ran on 100% renewables with no blackouts or cost rises for a record 98 days


If you live in an area that has frequent natural disaster events, and are interested in making your home more resilient to power outages, consider going solar and adding a battery storage system. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. They have hundreds of pre-vetted solar installers competing for your business, ensuring you get high quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use and you won’t get sales calls until you select an installer and share your phone number with them.

Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisers to help you every step of the way. Get started here. –trusted affiliate link*

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Mazda finally reveals plans to build its first dedicated EV: Here’s what we know so far

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Mazda finally reveals plans to build its first dedicated EV: Here's what we know so far

Mazda is finally stepping up with plans to build its first dedicated EV. The upcoming Mazda EV will be made in Japan and based on a new in-house platform. Here’s what we know about it so far.

The first dedicated Mazda EV is coming soon

Although Mazda isn’t the first brand that comes to mind when you think of electric vehicles, the Japanese automaker is finally taking a step in the right direction.

Mazda revealed on Monday that it plans to build a new module pack plant in Japan for cylindrical lithium-ion battery cells.

The new plant will use Panasonic Energy’s battery cells to produce modules and EV battery packs. Mazda plans to have up to 10 GWh of annual capacity at the facility. The battery packs will power Mazda’s first dedicated EV, which will also be built in Japan using a new electric vehicle platform.

Mazda said it’s “steadily preparing for electrification technologies” under its 2030 Management Plan. The strategy calls for a three-phase approach through 2030.

The first phase calls for using its existing technology. In the second stage, Mazda will introduce a new hybrid system and EV-dedicated vehicles in China.

Mazda-first-dedicted-EV
Mazda EZ-6 electric sedan (Source: Changan Mazda)

The third and final phase calls for “the full-fledged launch” of EVs and battery production. By 2030, Mazda expects EVs to account for 25% to 40% of global sales.

Mazda launched the EZ-6, an electric sedan, in China last October. It starts at 139,800 yuan, or around $19,200, and is made by its Chinese joint venture, Changan Mazda.

Mazda-first-dedicted-EV
Mazda EZ-6 electric sedan (Source: Changan Mazda)

Based on Changan’s hybrid platform, the electric sedan is offered in EV and extended-range (EREV) options. The all-electric model gets up to 600 km (372 miles) CLTC range with fast charging (30% to 80%) in 15 minutes.

At 4,921 mm long, 1,890 mm wide, and 1,485 mm tall with a wheelbase of 2,895 mm, Mazda’s EZ-6 is about the size of a Tesla Model 3 (4,720 mm long, 1,922 mm wide, and 1,441 mm tall with a 2,875 mm wheelbase).

Mazda-first-dedicted-EV-interior
Mazda EZ-6 interior (Source: Changan Mazda)

Inside, the electric sedan features a modern setup with a 14.6″ infotainment, a 10.1″ driver display screen, and a 50″ AR head-up display. It also includes zero-gravity reclining seats and smart features like voice control.

The EZ-6 is already off to a hot sales start, with 2,445 models sold in November. According to Changan Mazda, the new EV was one of the top three mid-size new energy vehicle (NEV) sedans of joint ventures sold in China in its first month listed.

Will Mazda’s first dedicated EV look like the EZ-6? We will find out with Mazda aiming to launch the first EV models on its new in-house platform in 2027. Stay tuned for more.

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Trump says he will revoke Biden offshore drilling ban on first day in office

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Trump says he will revoke Biden offshore drilling ban on first day in office

A view of offshore oil and gas platform Esther in the Pacific Ocean on January 5, 2025 in Seal Beach, California. 

Mario Tama | Getty Images

President-Elect Donald Trump said Tuesday that he will reverse President Joe Biden‘s ban on offshore drilling along most of the U.S. coastline as soon as he takes office.

“I’m going to have it revoked on day one,” Trump said at a news conference, though he indicated that reversing the ban might require litigation in court.

Biden announced Monday that he would protect 625 million acres of ocean from offshore oil and gas drilling along the East and West coasts, the eastern Gulf of Mexico, and Alaska’s Northern Bering Sea. The president issued the ban through a provision of the 1953 Outer Continental Shelf Lands Act.

An order by Trump attempting to reverse the ban will likely end up in court and could ultimately be struck down.

During his first term, Trump tried to issue an executive order to reverse President Barack Obama’s use of the law to protect waters in the Arctic and Atlantic from offshore drilling. A federal court ultimately ruled that Trump’s order was not lawful and reversing the ban would require an act of Congress.

The Republican Party has a majority in both chambers of the new Congress.

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