Turning the Tide for Renewables in Alaska
The ocean was calm when the Peregrine Falcon ship left the harbor in Homer, Alaska, last month with three moorings resting on its deck, all loaded with scientific instruments.
Eighteen hours later, these moorings were lowered into the silty waves where they collected data for two months. Two of the moorings were 12-foot submarine-shaped buoys that floated 60 feet below the inlet’s surface, and the third rested on the sea floor; all three gathered data on the velocity, turbulence, and sediments at the nation’s top-ranked tidal energy site.
A highly energetic corner of the Pacific Ocean, Cook Inlet holds one of the greatest tidal resources on Earth. All that energy has the potential to reduce Alaska residents’ dependence on declining oil and gas production and provide excess renewable energy that could stimulate the Alaskan economy. That is why researchers from the National Renewable Energy Laboratory (NREL) submerged their moorings in Cook Inlet; the data they collected will help identify important details of the opportunities and challenges that come with turning these surging waters into a reliable and renewable power source for Alaskans living on the nearby shore.
But that is no easy feat.
“Models and local knowledge tell us the currents here are extremely strong. There is silt and sea ice in the winter. We expect the turbulence to be intense,” said Levi Kilcher, an NREL senior scientist who leads ocean energy resource assessments like this one.
NREL researchers and crew prepared to deploy three moorings in Cook Inlet, Alaska, in July to collect data for a potential tidal energy site. From left to right: Chris Higgins (Peregrine Falcon), Patrick Verity (Peregrine Falcon), Brian Hunt (TerraSond Limited), Frank Spada (Integral Consulting), Levi Kilcher (NREL), Andrew Smith (TerraSond Limited), Gwen Sovitski, Olivia Cormier (TerraSond Limited), Jeff Johnson (Peregrine Falcon). Photo courtesy of Christopher Pike
Capturing Energy From the Ebb and Flow
Just as wind turbines extract energy from moving air, underwater turbines can create energy from the ebb and flow of the tides. Tidal energy has the potential to provide more than 220 terawatt-hours per year of clean, renewable energy in the United States, which is enough to power 21 million homes. Tidal technologies are promising, with new demonstration projects showing the world that they can operate reliably and efficiently. And yet, it is still an early-stage industry when compared to wind and solar. As of September 2020, only three tidal turbines were operating in the United States.
“So much of our work builds on NREL’s background in wind power,” Kilcher said. “It took time to understand the importance of accounting for turbulence in wind turbine designs. We’re learning from that and getting ahead of the turbulence questions now by making these measurements. But in the ocean, there are so many additional environmental challenges: We’ve also got to deal with sea ice, sediment, marine growth — not to mention the corrosive properties of the salt water itself. So, we’re trying to understand the details of these environmental challenges as well.”
For the Cook Inlet study, Kilcher led a multilaboratory team that included researchers from Pacific Northwest National Laboratory and Sandia National Laboratories. The team also contracted help from TerraSond Limited, Ocean Renewable Power Company, and Integral Consulting. NREL has performed similar studies in Puget Sound, Washington, and off the coast of Maine, but the Alaskan environment poses unique challenges: currents that are stronger, sea ice in winter, and sediments that wash into the inlet from the glaciers dotting the nearby mountains. The turbulence stirs up sand and silt from the inlet floor, creating frothy, gray water at the surface and a slurry of sand and gravel at the bottom.
“The strong currents at the site create sand dunes on the sea floor that are 30 feet tall. Instruments have been lost at this site, most likely buried in sand,” Kilcher said. “We’ve used midwater moorings and inflatable chambers in the Tidal Bottom Lander to ensure we get this stuff back.”
Frank Spada (Integral Consulting, left) and Andrew Smith (TerraSond Limited) hold the buoy steady while Patrick Verity (Peregrine Falcon) unshackles it for a ballast test in the Homer harbor, Alaska. Photo courtesy of Christopher Pike
It is an environment Kilcher knows well. He grew up in Homer, a small fishing town on Cook Inlet where he played on the beach of these icy waters, practiced subsistence fishing, and later worked as a deckhand for his father’s freight business. He earned a Ph.D. in oceanography with a focus on ocean turbulence from Oregon State University. Ten years ago, he brought his expertise to NREL’s Water Power team to help design tidal power systems that could, one day, power his hometown.
“I’ve always been attracted to problems that seem unsolvable. Turbulence is one of those problems, and tidal energy has sometimes felt like one too, but the industry is starting to see real success,” Kilcher said.
Now, to help in the effort, Kilcher and his team are gathering some of the information needed to start designing projects in Cook Inlet. In addition to turbulence, researchers are measuring the water’s velocity, salinity, temperature, and the sediment composition and concentration. With that data, they will validate and refine models to paint a much more detailed picture of the site, including how much energy could be generated there and how to build tidal turbines that can withstand the elements.
The detailed understanding of the Cook Inlet tidal energy resource that stems from this project will allow the industry to design tidal turbines that perform reliably for decades in the harsh Cook Inlet environment. Ultimately, this work could also help design turbine arrays that maximize power production while minimizing impacts to marine life and the inlet’s ecosystems.
Transforming Alaska’s Economy With Clean, Affordable, Local Energy
Having access to clean, affordable energy would transform the Alaskan economy, which is currently facing a deep economic recession due to decreased oil and gas production and high energy prices. Alaskan residents depend on oil and gas not just for jobs and state revenue but also for heating and power. Because of their extreme climate, remote location, and lack of infrastructure, they spend twice as much on energy as the average American; many communities pay three times more, according to the Cold Climate Housing Research Center’s 2018 Alaska Housing Assessment.
The Cook Inlet site is estimated to hold as much as 18 gigawatts of tidal energy potential — more than 20 times the amount used by all the road-connected communities of Alaska.
“It’s a huge amount of power that we have access to at our doorstep,” said Chris Rose, executive director of the Renewable Energy Alaska Project, a nonprofit that advances clean energy solutions for Alaska. “The economic and environmental benefits would be immense.”
With affordable energy, local industries could process the raw materials harvested in Alaska, such as wood, minerals, and fish, rather than exporting them to places with cheaper energy prices. Communities could switch from diesel to electric power for transportation and heating. With surplus electricity, companies could even start making hydrogen as a fuel with which to export the state’s vast renewable energy resources.
Tidal power technologies are at a critical stage of development; U.S. and European companies have had increasing success in single-device demonstration projects and are now planning pilot-project arrays that demonstrate long-term reliability and scalability. Cook Inlet’s strong currents and harsh environment are ideal for demonstrating technology robustness. Given these successes, NREL engineers believe tidal technologies could make significant contributions to Alaska’s energy demand in the next decade. This would help transform and revitalize the Alaskan economy and would be a significant contribution to help meet the marine energy industry’s goal of 1 gigawatt of marine energy plants deployed by 2035.
“It’s kind of like saying to the people in Arizona 40 years ago that if solar power ever gets really cheap, we’ll have a bonanza here. Guess what? It happened.” In other words, Rose said, “the time to start investing in tidal energy is now.”
Out in Cook Inlet on the Peregrine Falcon, Kilcher deployed and successfully recovered three moorings to gather the data needed to engineer the next generation of tidal devices. When he returned to the harbor, the sun shone over the snow-covered mountains, and Kilcher looked for the humpback whales the team saw the day before. He thought about the precious data they had just collected and the device engineering it will facilitate. And he thought about the childhood dream that grew from these same waters.
I firmly believe we can find a cleaner future that’s carbon neutral — carbon negative even,” Kilcher said. “I’ve been working for 10 years to make marine energy a part of that solution.”
Find more information on NREL’s resource characterization work.
Article courtesy of National Renewable Energy Laboratory (NREL).
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Tesla is talking about finally bringing the next-generation Roadster to production in new job listing.
However, you shouldn’t hold your breath.
The prototype for the next-generation Tesla Roadster was unveiled in 2017 and was supposed to enter production in 2020, but it has been delayed each year since then.
It has become a running gag in the Tesla community and an example of CEO Elon Musk’s tendency to stretch the truth about timelines.
Since missing its original 2020 production timeline, Musk has given six updated production timelines for the new electric supercar, and each has been wrong.
The latest timeline hasn’t even been about producing the vehicle. It has been about the unveiling of a new version of the next-generation as the last prototype of what is supposed to be a “next-gen” car was unveiled almost a decade ago.
Musk has been talking about an unveiling and demonstration of the New Roadster by the end of the year.
This week, Tesla has posted a new job listing for a ‘Manufacturing Engineer, Roadster‘. In the job description, Tesla mentions working on battery manufacturing equipment for the Roadster:
Tesla is looking to hire a Manufacturing Engineer to contribute to the concept development and launch of battery manufacturing equipment for our cutting-edge Roadster vehicle. In this role you will take large scale manufacturing systems for new battery products and architectures from the early concept development stage through equipment launch, optimization and handover to local operations teams. Battery development is at the heart of our company, and this is an exciting opportunity to work directly on the central challenges for the all-new Roadster product architecture while still in its early development stages.
The comment does point to Tesla starting to set up manufacturing for the production of the new Roadster.
Since this does sound like early manufacturing development work, it would be optimistic to hope to see new Roadsters rolling off the production line by the end of next year. More likely to be in 2027.
In its updated annual installed production capacity chart, Tesla listed Roadster production as still being in the “design development” phase as of last week:
The location of Roadster production is also listed as “to be determined.”
The new job listing for a manufacturing engineer on the Roadster program mentions being based in Fremont, which could mean Tesla plans to launch production at its California factory.
Tesla next-gen Roadster
As unveiled in 2017, the new Roadster was supposed to get 620 miles (1,000 km) of range and accelerate from 0 to 60 mph in 1.9 seconds.
It was listed for $200,000, and a “Founder Series” was also offered for $250,000.
At the time, Tesla used the Roadster as a prize for its referral program when it badly needed to generate sales. A few dozen Tesla owners referred enough new sales to win one or two free new Roadsters each.
Some have suspected that Tesla didn’t want to bring the vehicle to production because it would have to deliver over 30 of them for free and hundreds more at heavy discounts due to its original referral program.
Others believe that updates to the vehicles have led to delays.
Shortly after the unveiling of the next-gen Roadster in 2017, Musk discussed adding cold-air thrusters to the supercar to deliver unprecedented racing performance and possibly even allow it to hover over the ground.
The CEO referenced demonstrating that the “Roadster can fly” on several occasions in the last few years.
Electrek’s Take
It looks like we are talking about the Roadster possibly coming to market in 2027—maybe late 2026 at the earliest.
That’s roughly 10 years after it was unveiled.
I’ll believe it when I see it. And if it does happen, I might have one or two flying Roasters for sale.
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Just like it says on the tine: TV brand SHARP is following Sony into the automotive space with the new LDK+ concept that transforms into a mobile movie theater. It’s a type of concept we’ve seen before – but not like this!
The SHARP LDK+ promises to be a Living room, a Dining room, and a Kitchen on wheels – and more (the plus, obviously), building off the decidedly more blobular™ concept first shown back in 2024. This updated version, however, takes the LDK concept and brings it significantly closer to reality by basing it on Foxconn’s “Model A EV by Hon Hai Technology Group” chassis.
And, now that it’s a little bit closer to some kind of reality, it might be time to climb on the SHARP hype train and take a minute to genuinely enjoy the movie/gaming environment the company is promising to deliver with the LDK+ concept.
Get hyped, kids
Not to be overly crude here, but if you roll in a van with a sliding projector table, opaque windows, and fully reclining seats, you probably hit the “family planning” section of your local Walgreens on a regular basis. Similarly, as more and more young people find themselves struggling to afford their own space, offering a vehicle that delivers a little privacy. And even if that’s more Netflix than chill, I think it’s bound to find a few buyers.
Whether I’m right or wrong about that will remain to be seen for a while, however. The official press release is light on specs, offering the following description of the LDK+ concept …
The second iteration of “LDK+” retains the original concept while featuring both high maneuverability with its compact body and a spacious, relaxing interior. Developed based on the“Model A” EV by Hon Hai Technology Group (Foxconn), this compact minivan model offers an expansive cabin layout.
When parked, the vehicle can be used as a theater room or a remote workspace. A console box equipped with a table and projector is placed between the driver’s and passenger’s seats. By swiveling the driver’s seat to face backward, it creates a living room-like atmosphere where you can sit around with the rear seats. Pulling down the screen installed above the rear seats allows you to enjoy movies or conduct online meetings on a large display. Through Sharp’s AIoT platform, which connects AI and home appliances, the vehicle links with household devices such as kitchen appliances, air conditioning, and laundry systems. The AI learns residents’ lifestyles and preferences, creating personalized new ways of living. In addition, the system can connect with V2H (Vehicle to Home) solutions, enabling efficient energy management by integrating solar power generation and residential storage batteries.
SHARP
… but skipping automotive basics like battery capacity, anticipated driving range, and the usual horsepower and torque figures. Pricing and, perhaps most importantly, when the vehicle might see the light of day weren’t revealed, either.
SHARP LDK+ concept
All of which is to say: they’re probably never going to actually build something like this – and that’s too bad, because a new-age Honda Element/Nissan Cube-style boxy little EV would absolutely sell like hotcakes.
SOURCE | IMAGES: SHARP, The Japan News.
If you’re considering going solar, it’s always a good idea to get quotes from a few installers. 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. It has 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.
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All those people who want you to believe mining for EV batteries is as dirty as drilling for oil? They don’t want you to know about recycling – and they really don’t want you to know about a new pilot recycling program is promising a radical leap in battery recycling efficiency, with recovery reportedly rates exceeding 99% for critical metals like nickel, cobalt, and manganese.
Thanks to a new, highly detailed, and (crucially) enforceable regulatory framework of 22 national standards backed by a newly formed national technical committee, a team of Chinese-led researchers is raising the bar when it comes to battery recycling efficiency.
These new standards brings together stakeholders from raw material supply, battery production, recycling and dismantling, and chemical processing disciplines to address battery recycling needs across automotive, marine, and energy storage applications. The rules feature titles like, “Vehicle power battery recycling and dismantling specification,” and, “Vehicle power battery remaining energy detection (standard),” and provide the nation’s auto industry with clear and uniform procedures for handling retired batteries.
The results of a single, standardized approach have been revolutionary, and companies adhering to the new protocols are, according to CarNewsChina, seeing recovery rates of 99.6% for nickel, cobalt, and manganese, and an impressive 96.5% for lithium – figures that were once considered a distant goal for the global industry.
Electrek’s Take
Despite being presented as an environmental liability, EV batteries represent a single sunk carbon cost that diminishes rapidly over time. Simply put: the more you use an EV battery, the greener it gets – and now that more than 99% of the battery materials can be recycled and reused in batteries that are as good as or better than they were the first time around, the batteries can become a predictable source of critical raw materials, generating significant economic value while drastically reducing the need for virgin mining and encouraging domestic job growth.
Too bad our own US policymakers can’t get this one right.
SOURCE | IMAGES: CarNewsChina; Enel.
If you’re considering going solar, it’s always a good idea to get quotes from a few installers. 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. It has 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 Advisors to help you every step of the way. Get started here.
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