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Anyone who looks out at the ocean may feel awed by the power apparent in every wave. That power has the potential to provide energy to land-based homes and businesses, as well as floating facilities and vessels at sea. But how can we transform the ocean’s energy into usable forms, such as electricity or desalinated water?

One way to harness the ocean’s energy is through a device called a wave energy converter, or WEC. To date, WEC designs have been generally centered on large, rigid bodies that float in the water and move relative to each other as waves roll past. These bodies typically absorb ocean wave energy and focus that energy into a centralized conversion mechanism, such as a rotary generator or hydraulic piston.

Now, the National Renewable Energy Laboratory (NREL) is exploring ways to significantly advance wave energy converter design and development. With funding from the U.S. Department of Energy’s (DOE’s) Water Power Technologies Office, NREL researchers are developing concepts in which many small energy converters can be aggregated to create a single structure. With this new approach to developing wave energy, the domain of distributed embedded energy converter technologies (DEEC-Tec) could help the promise of substantial renewable energy generation from ocean waves become a reality.

Figure 1. Stretched and deformed sample volume of a flexWEC’s structure illustrating the basic use of distributed embedded energy converters (DEECs) to create power from wave energy. The sample volume has two sections where material is removed to clarify their respective arrangements: (1) the middle section has the supporting compliant material framework removed, and (2) the right section has both the supporting compliant framework and the DEECs removed. The illustration showcases how the combined semicontinuous nature of DEEC technologies supports the development of materials and structures for ocean wave energy harvesting and conversion devices.

Why Distribute and Embed Multiple Energy Converters?

One of the most innovative elements of DEEC-Tec is its ability to create flexible ocean wave energy converters, sometimes known as flexWECs. These devices have inherently broad-banded ocean wave energy absorption and conversion characteristics, meaning they can harvest energy across a wide range of ocean wave heights and frequencies.

DEEC-Tec provides a new scope of possibilities for how ocean wave energy can be harvested and converted and how flexWEC designs could power a variety of end uses both on land (powering homes and businesses) and at sea (powering navigation buoys and marine vehicles). Some of these uses will support DOE’s Powering the Blue Economy™ initiative, which aims to advance marine renewable energy technologies, such as navigation buoys or autonomous underwater vehicles, to promote economic growth in industries such as aquaculture.

“Our goal with DEEC-Tec is to vastly broaden how we currently conceptualize and envision the use of ocean wave energy,” said NREL researcher Blake Boren, who has been studying wave energy converters for over 10 years. “There is a tremendous range of possibilities for how we can develop these DEEC-Tec-based wave energy converters, and we are accelerating that exploration process.”

Figure 2. Three possible flexWEC archetypes showcasing the nondeformed and dynamically deformed states of DEEC-Tec-based flexWEC structures. The yellow flexible bodies in each archetype represent the DEEC-based, compliant structures illustrated in Figure 1. (Note: Nothing is to scale; flexWEC archetype figures and scenes are solely illustrative.)

How DEEC-Tec Moves Wave Energy Forward

DEEC-Tec concepts are assembled from many small energy converters that, together, form a structure that can undulate like a snake, stretch and bend like a sheet of fabric, or expand and contract like a balloon. As the overall structure bends, twists, and/or changes shape as the ocean waves roll past, each embedded energy converter can turn a portion of that ocean wave energy into electricity.

A flexWEC has several advantages:

  • A broader spectrum of energy capture. With a wide range of movement and deformations available, DEEC-Tec-based wave energy converters absorb and convert ocean wave energy across a much broader range of wave conditions — both in terms of size and frequency — when compared with rigid-body converters.
  • Mechanical redundancy. The ability to use many hundreds or thousands of distributed embedded energy converters can ensure that ocean energy conversion occurs even if one or more of those converters stops functioning.
  • Resilience. The DEEC-Tec-based wave energy converter’s flexibility grants an inherent survival mechanism: the ability to ride out and absorb excessive, dangerous surges of energy from large storms and rough seas.
  • Favorable materials. DEEC-Tec-based wave energy converters could be manufactured from recycled materials or simple polymers. These replace heavier, sometimes more expensive materials that have historically been used for wave energy converter development, such as steel or rare-earth elements needed for large permanent magnets. Moreover, existing mass-manufacturing techniques could be used for straightforward and cost-effective DEEC-Tec component fabrication.
  • Easier installation. DEEC-Tec-based wave energy converters can be folded, deflated, or otherwise made compact for transport from a manufacturer to a deployment site. Likewise, for installation, they can be expanded to cover broad surface areas as needed. This would allow for robust energy capture with lower capital costs.
  • Reduced maintenance schedules. Monitoring the relative performance of many small devices determines the need for DEEC-Tec-based wave energy converter maintenance throughout the structure. The inherent redundancy of the structure potentially translates to less frequent inspections and maintenance requirements.
  • Near-continuous structural control. A DEEC-Tec-based wave energy converter is composed of numerous small transducers — mechanisms that convert one form of energy into another. Some of these can serve as simple electrical actuators, which can change the converter’s shape and movement in response to ocean wave conditions. This will allow for greater ocean wave energy harvesting and conversion control.

Bending to the Future

While there are many advantages to using DEEC-Tec in the research and development of ocean wave energy converters, there are still unknowns that need to be understood and addressed. To this end, NREL researchers are identifying the materials, structural designs, electronic systems, and manufacturing methods that could advance DEEC-Tec concepts for marine renewable energy. NREL’s work also includes DEEC-Tec subcomponent validation and codesign, computational models to simulate performance, and device proofs of concept for building and validation.

As part of this research, NREL is collaborating with outside institutions, such as the University of Colorado–Boulder, Netherlands-based energy company SBM Offshore, the U.S. Naval Research Laboratory, and Sandia National Laboratories.

Learn more about NREL’s work on distributed embedded energy converter technologies.

Article and Images courtesy of the NREL, the U.S. Department of Energy.


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BYD is offering free car insurance on select EVs in new end-of-year sales promo

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BYD is offering free car insurance on select EVs in new end-of-year sales promo

China’s EV leader wants to close the year strong with a new sales promotion. BYD is now offering free car insurance on certain EVs ahead of the upcoming Chinese New Year. Will it be enough to take the global EV sales crown in 2024?

BYD offers free insurance on some EVs to boost sales

With a record 506,804 NEVs (EV and PHEV models) sold in November, BYD has now had two straight months with over 500,000 in vehicle sales.

The EV giant has no plans to slow down. On Thursday, BYD announced its latest “New Year GO New Car” sales promotion on its Weibo page.

From today, December 26, 2024, through January 26, 2025, BYD is offering free car insurance on select PHEVs and EVs in its Ocean and Dynasy lineups. The promo includes several top-selling EVs, including the Dolphin, Seal, and Sea Lion 07.

Through the first 11 months of 2024, BYD sold nearly 3.76 million NEVs, including 1.56 million all-electric models. The promo comes as BYD is in a tight race with Tesla for the global EV sales crown for 2024.

BYD-free-insurance-EVs
BYD is giving free car insurance for select EVs in a new year-end promo (Source: BYD)

Through September, Tesla delivered 1.3 million EVs compared to BYD’s 1.17 million. Since Tesla doesn’t report monthly sales numbers, we will have to wait until the end-of-year numbers come out to determine who will take the EV sales crown in 2024.

BYD-Seagull-cheapest-EV
BYD Seagull (Source: BYD)

The Seagull EV, BYD’s cheapest electric car starting under $10,000, was once again China’s best-selling vehicle last month after topping the Tesla Model Y. BYD sold 56,156 Seagull EVs last month alone in China.

Although the global EV sales race between BYD and Tesla is heating up into the end of the year, the Chinese EV leader is quickly outselling some of the largest global automakers.

BYD sold more vehicles globally than Nissan and Honda in the third quarter, and it is now closing in on Ford.

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The rate at which China has rebuilt its car industry is truly staggering

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The rate at which China has rebuilt its car industry is truly staggering

After starting off slow, China’s EV industry has reorganized itself in record time, going from a global laggard to a global leader in about 5 years – showing other countries how it ought to be done.

In 2020, China was still early in its EV transition, lagging behind many other countries and regions. With EVs only consisting of 5.4% of the country’s car market, it lagged behind California and almost all of Europe – even the slower-adopting countries, like Romania. It was only barely ahead of the 4.6% global average that year.

It set a relatively unambitious goal of 50% EV sales by 2035 – and those 50% didn’t even need to be gasoline-free, they could be hybrids or plug-in hybrids which still have a gas engine inside (what China classifies as “New Energy Vehicles” or NEVs). Around that time, both California and Europe were thinking about banning gas car sales by 2035 – and each of those targets probably could have been earlier, too.

Now, with 2025 coming in just a week, China is likely to hit that 2035 target ten years early – closer to the year that it set the target than the year that the target was set for. It even moved its target forward to 45% NEVs by 2027 this January… and exceeded that target within less than a year.

It’s an indication of how much China is able to do when they put their minds to it – and how other countries have completely failed to keep up due to bickering and resistance from companies or governments being hostile to better technology.

The rapid rise in Chinese EVs

2020 was a turning point for the Chinese EV industry. China responded strongly to the start of the COVID-19 pandemic (and as a result, had a lower death rate than almost any country, despite life within China being relatively normal after initial lockdowns), which meant a large drop in vehicle sales in the country (much like the rest of the world).

But when sales recovered, China’s eyes had turned inwards. Not only had domestic EV makers started to ramp up production rates and quality (after a decade of smart industrial policy focusing on mineral supply and encouraging domestic manufacturers), but the rest of the world had spent years blaming China for all sorts of ills (like carbon emissions, which China was criticized for not doing enough about, and now is criticized for doing too much). Technology blockades and discussions about tariffs led to consumer nationalism, with Chinese consumers expressing interest in domestic goods more than they had before.

This, coupled with new emissions rules that the rest of the world’s automakers hadn’t prepared properly for (despite having 7 years notice) led to a glut in gas car supply – mostly from foreign brands – which we called the “canary in the coal mine” for where the global ICE car market was going.

Chinese auto dealers could have responded to this by asking the government to reverse the rules, but instead they asked for (and were granted) a six month amnesty in order to clear unsold cars off of their lots, and otherwise demanded that auto manufacturers shape up and build EVs faster.

As a result of this mentality, China became the top global exporter of automobiles this year – a title that Japan had for decades.

Meanwhile, the West drags its feet

It’s a stark difference to how automakers and governments usually behave in the West (and in Japan), working to slow down transitions and add protectionist measures instead of gearing up for an inevitable change in the industry that already started.

And the regressive portions of Western governments are all too happy to oblige, with for example the US republicans promising to hold the US auto industry back even further, ensuring it isn’t ready for the present, and their far-right ilk in European governments arguing for similar measures.

President Biden’s administration did do its part to try to turn US industrial policy around to be ready for EVs with the excellent Inflation Reduction Act, which brought hundreds of billions in investment and hundreds of thousands of EV jobs to the US. Biden’s EPA and DOT also improved several emissions rules (despite softening them somewhat after industry pressure) to move the industry forward. But it also implemented large tariffs, which could help to breed complacency.

But unfortunately for America, the next occupant of the White House is convicted felon Donald Trump, who finally received more votes than his opponent on his third attempt (despite committing treason in 2021, for which there is a clear legal remedy), with less than half of the country voting to ensure that US manufacturing fall further behind.

In his last stint squatting in the White House, the EPA knowingly worked against clean air and instead of preparing the US to lead the EV transition, it focused on petty losing squabbles with states that are actually trying to move the US forward. We could have had smarter industrial policy, like China, but instead government worked to shatter the regulatory certainty that President Obama had helped to lay out.

Luckily, most Western auto manufacturers may have learned their lessons, and this time they’re finally asking government not to blow up emissions rules. They recently donated money to the famous narcissist, presumably hoping to get in his ear – we’ll have to wait and see whether what they say is actually geared towards the future (and whether the ignoramus they’re saying it to is even able to comprehend it). Though that could all be for naught, because one of Mr. Trump’s closest allies is Elon Musk, CEO of the largest EV maker in the US, who has confusingly focused his advocacy on harming EVs.

Change is coming faster than you think

China’s rapid rise in EV sales, meeting targets well ahead of schedule, may seem anomalous at first blush. It’s not often that a target gets met in one third of the time allotted for it, especially when you’re dealing with a country of 1.5 billion people. That’s a lot of inertia to turn around.

But there are other examples of targets getting met and exceeded early, and companies and governments need to be aware of these and maintain flexibility instead of fighting in the face of positive change.

Norway is one example, where the country was already far ahead of the international community, and set a target to end gas car sales by 2025. While there are still a trickle of non-EVs sold in the country, Norway’s market was already over 90% electrified in 2021.

This is not uncommon with technology adoption curves, as once a technology reaches a critical mass, most consumers consider it the default and will switch to it without much issue. That critical mass has already been met in most Northern European countries and in China, but other places could get there fast.

Once they do, who do you think will come out for the better – the countries and companies whose manufacturing base is ready to supply products that fuel that change, or the ones that have spent decades bickering and trying to slow it down so they can continue spewing poison in all of our lungs?

And as I’ve ended several articles in recent years: we should have been doing more earlier, but as the famous (possibly Chinese) proverb says, “the best time to plant a tree is 20 years ago, the second best time is today.”


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Kia’s new Syros SUV is going electric as a low-cost Hyundai Inster EV twin

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Kia's new Syros SUV is going electric as a low-cost Hyundai Inster EV twin

Kia introduced its new Syros SUV last week. Although it was launched with a gas-powered engine, Kia plans to launch the all-electric version soon. The new Kia Syros EV will share underpinnings with the Hyundai Inster EV as its latest low-cost electric model.

What we know about the upcoming Kia Syros EV

India’s EV market is expected to surge over the next few years. In 2024, the India EV market is projected to be valued at around $24 billion. That number is expected to reach nearly $118 billion by 2032.

Kia is looking to take advantage of the transition. After launching its first vehicle (Seltos) in India in 2019, Kia is already one of the top 10 auto manufacturers in the region.

The Korean auto giant has added several models to its lineup, including the Sonet, Carnival, Caren, and electric EV6 and EV9 SUVs.

Just last week, the Kia Syros made its global debut. Kia calls the compact SUV “revolutionary,” but there’s one problem: it only has two gas-powered engine options. That will soon change. According to Autocar India, Kia will launch the Syros EV in India in early 2025.

Kia-Syros-EV
Kia Syros SUV (Source: Kia)

Although no other details were confirmed, the Kia Syros EV will share its K1 platform with the Hyundai Inster EV. Hyundai’s compact electric crossover has two battery options, 42 kWh and 49 kWh, good for 300 km (186 mi) to 355 km (220 mi) range on the WLTP cycle.

In Europe, the Inster EV starts at around $30,000. In Korea, the electric crossover is known as the Casper Electric, and prices, including incentives, start around $20,000.

Hyundai-Casper-EV-Cross
Hyundai Casper Electric (Inster EV) models (Source: Hyundai)

Kia’s new electric SUV is expected to start in the price range of Rs 15 lakh-20 lakh (ex-showroom), or around $17,500 to $23,500.

Despite the difference in powertrain, the electric version is expected to have the same styling and features as the gas-powered models. Kia expects between 50,000 and 60,000 in sales between the upcoming electric Carens and Syros EV models by 2026.

The company is launching a series of more affordable, mass-market EVs globally, including the EV3, EV4, and EV5, to secure its spot in the industry as it shifts to electric vehicles.

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