Small Wave Energy Power Plants Could Be Wave Energy’s Path Forward
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.
A federal court judge in Michigan has placed the once-promising electric truck brand Bollinger Motors’ assets into receivership following claims that the company’s owners still owe its founder, Robert Bollinger, more than $10 million.
Bollinger Motors first came to fame in the “draw a truck, get a billion dollars” stage of the EV revolution that saw Nikola rise to a higher market cap than Ford for a brief time. Robert Bollinger wasn’t able to capitalize quickly enough to get his trucks into production, though – and a late stage pivot to sell the brand to Mullen Automotive and launch a medium-duty commercial truck doesn’t appear to have been enough to save it.
Now, Automotive News is reporting on some of the more convoluted details of the Mullen purchase deal, with Robert (for ease of distinguishing the man from the brand) claiming that Mullen Automotive owes him more than $10 million for a loan he made to the company in 2024.
Just how Robert ended up giving Mullen Automotive $10 million to take his eponymous truck brand off his hands is probably one of those capitalistic mysteries that I’ll never understand, but Mullen’s response was perfectly clear: they didn’t even bother to show up to court.
Bollinger claims that at least two suppliers are also suing Mullen for unpaid debts. As such, the Honorable Terrence G. Berg has put the Bollinger brand into receivership, and its assets have been frozen in preparation for everything being liquidated. Worse, for Bollinger, the official court filings reveal a company that is really very much doing not awesome:
The testimony and evidence—which Defendant’s counsel conceded accurately reflected Defendant’s finances—showed that Defendant is in crisis. For months Defendant has owed more than twenty million dollars to suppliers, contractors, service providers, and owners of physical space. These debts are owed to parties who are critical for Defendant’s functioning. CEO Bryan Chambers testified that Defendant was locked out of its production facilities on May 5, 2025, and that the owner of the production facilities was seeking to permanently evict Defendant. The Court heard that Defendant had been prevented from accessing its critical manufacturing accounting system for a short time at the end of April 2025, before making a partial payment to restart services.
US DISTRICT COURT EASTERN DISTRICT OF MICHIGAN
I’m not sure if you caught all that, but Bollinger’s CEO has been locked out the company’s facilities and getting evicted, the company is more than $20 million in debt, and that debt is owed to people Bollinger absolutely needs in order to keep going.
You can read the full court decision, which I’ve embedded here, below. Once you’ve taken it all in, feel free to rush into the comments to say you told me so, since I really thought hoped the Bollinger B1 had a shot. Silly me.
Bollinger v. Bollinger case
SOURCES: Automotive News, Justia, Yahoo!.
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Mammoth Solar, a 1.3 gigawatt (GW) solar farm in northern Indiana, is now powering into its biggest construction phase yet, cementing its place as one of the largest solar projects in the US.
The solar farm is set to increase Indiana’s solar capacity by more than 20% once it’s fully online. And with construction ramping up this month, developer Doral Renewables has given Bechtel Full Notice to Proceed on the design, engineering, and construction of three major phases of the project: Mammoth South, Mammoth Central I, and Mammoth Central II. Together, these phases will generate 900 MW of clean energy.
That’s enough electricity to power around 200,000 homes with clean energy, helping Indiana shift away from fossil fuels while boosting the local economy.
Construction is already underway, and over the next two years, Bechtel will install around 2 million solar panels, with about half of them made in the US. The company is also handling all engineering, procurement, and construction work, using its digital project management tools and autonomous tech to keep everything on track.
At the peak of the buildout, Mammoth Solar is expected to create over 1,200 jobs, with at least 15% of those set aside for apprenticeships.
Bechtel says its success will hinge on strong collaboration with local trades and vendors. The company is working closely with craft professionals and is committed to being a reliable community partner throughout construction.
Once the solar farm is complete in 2027, Doral Renewables plans to roll out agrivoltaics across the site. That means livestock grazing and crop cultivation will happen right alongside energy production, giving farmers in the area a way to keep working their land while supporting clean energy development.
Read more: Solar adds more new capacity to the US grid in 2024 than any energy source in 20 years
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BYD is about to launch an even smaller EV, but this one’s a little different. It’s BYD’s first kei car. You know, those tiny vehicles that dominate Japan’s city streets? BYD’s mini EV was just spotted out in public, giving us our first real look at the upcoming kei car.
BYD’s first mini EV was spotted in public
Last week, rumors surfaced that BYD was developing its first kei car, which would compete with top-selling models from Nissan, Honda, Mitsubishi, and other Japanese brands.
Kei cars, or “K-Car,” as they are sometimes called, are a class of ultra-compact vehicles that cannot be longer than 3.4 meters (134″). To put that into perspective, BYD’s smallest EV currently, the Seagull (called the Dolphin Mini overseas), is 3,780 mm (148.8″) long.
The mini vehicles are ideal in Japan because they are so small, making it easy to get around tight city streets. They are also more affordable and efficient than larger vehicles.
BYD’s mini EV was spotted for the first time during a road test this week by IT Home (via CarNewsChina), revealing a familiar look. It has that boxy, compact look of a typical kei car with sliding side doors.
According to reports, BYD is developing a new platform for the model. It will reportedly include a 20 kWh battery, good for 180 km (112 miles) WLTC range. By using its in-house Blade LFP batteries, BYD is expected to have a cost advantage.
BYD’s upcoming mini EV is expected to start at around 2.5 million yen, or about $18,000. That’s about the same as the Nissan Sakura (2.59 million yen), Japan’s best-selling EV last year.
既出ですがBYDの日本向けEV軽自動車と言われているフロントとリアからのスパイショット。 pic.twitter.com/CcV5pihpWc
— 主夫まぬか (@syufumanuka) May 16, 2025
Last year, around 1.55 million kei cars were sold in Japan, accounting for roughly 40% of new vehicle sales. Honda’s N-Box was the top-selling kei car (EV or gas) for the third straight year.
As Nikkei reported, some are already calling BYD’s electric kei car “a huge threat.” A Suzuki dealer said, “Young people do not have a negative view of BYD. It would be a huge threat if the company launches cheap models in Japan.”
BYD already sells several electric cars in Japan, including the Atto 3 SUV, Dolphin, and Seal. Last month, the company launched the new Sealion 7 midsize electric SUV, starting at 4.95 million yen ($34,500).
Although Japan isn’t really an EV hot spot, with sales falling 33% in 2024 to just under 60,000 units, BYD sees an opportunity.
By making virtually every car component in-house, including batteries, BYD can offer EVs at such low prices while still making a profit. BYD’s cheapest and best-selling electric car, the Seagull, starts at under $10,000 (69,800 yuan) in China.
With new smart driving and charging tech rolling out, BYD’s electric cars are getting smarter and even more efficient.
Can BYD’s mini EV compete with Japanese brands? At the right price, it may have a chance. Check back soon for more on the upcoming kei car. We’ll keep you up to date with the latest.
Source: Sina, CarNewsChina
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