Swedish wind turbine maker SeaTwirl got the go-ahead to test its 1 megawatt (MW) S2X vertical-axis floating offshore prototype in Norway.
Vertical-axis floating wind turbine pilot
In March 2022, Norway’s Ministry of Energy gave approval to SeaTwirl and Norwegian offshore wind test center Marine Energy Test Centre to pilot the vertical-axis floating wind prototype for five years at a former fish farm in Boknafjorden, northeast of Lauplandsholmenoff, 700 meters (2,297 feet) from the coast.
But four groups – the Norwegian Environmental Protection Association, the Norwegian Fishermen’s Association, and two campaign groups – appealed against SeaTwirl’s permit, and so the project was put on ice.
Yesterday, the Norwegian Water Resources and Energy Directorate rejected the appeal, so SeaTwirl’s S2X pilot can now proceed, and no further appeals will be considered.
Our main focus is the commercialization of large turbines, SX, in floating wind farms. The outcome provides freedom to choose and plan the installation of S2x in the way that best supports that goal.
How S2X works
SeaTwirl says that “multiple S2xs can be placed in a dense pattern for increased output.” The company’s reasoning for building vertical (instead of horizontal) axis floating turbines is this:
The simplicity of the design and low center of gravity are the big advantages. All moving parts and electrical systems are easily accessible [and] close to the water’s surface, lowering maintenance costs.
The S2X prototype is 55 meters (180 feet) above sea level, and it’s around 80 meters (262 feet) below sea level. The turbine diameter is 50 meters (164 feet). Its rotor blade height is around 40 meters (131 feet). Its optimal operating depth is 100 meters (328 feet) and deeper.
SeaTwirl isn’t the only company testing vertical-axis wind turbines off the Norwegian coast – earlier this month, aluminum and energy giant Hydro and floating wind specialist World Wide Wind announced that they’re going to test a vertical-axis wind turbine made out of aluminum.
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The latest hybrid telehandler from New Holland packs a range-extending combustion engine to boost its battery power during longer shifts – but it doesn’t run on gas or diesel. Instead, this farm-friendly machine is built to run on METHANE.
Manure digester, via Ag Marketing Resource Center.
CASE and New Holland (collectively, CNH) understands its customers’ desire to put that biogas to good use. They also understand that nothing is quite as efficient as battery-electric power, though; but big farms have weird duty cycles: 4-6 hour shifts most of the year, then critical, un-skippable, non-negotiable round-the-clock running during harvest.
“With this prototype, New Holland shows its continuous commitment to the ‘Clean Energy Leader‘ strategy, building on our leadership in alternative fuel machines,” says Marco Gerbi, New Holland T4 and T5 tractor, loader and telehandler product management. “Our aim is to help our customers boost farm productivity and profitability by broadening our range of alternative fuel machines that do not compromise efficiency or productivity yet help to minimize agriculture’s carbon footprint.”
Primarily driven by a 70 kWh lithium-ion battery, the telehandler uses a methane-fueled version of Fiat Powertrain’s four-cylinder F28 engine as a range-extending backup whenever jobs demand more uptime. On the energy stored in the battery alone, New Holland says the machine can handle a full day’s worth of typical farm work — roughly a “350-day duty cycle,” and it can recharge from the grid, a biogas generator, or even rooftop (barntop?) solar.
It’s still just a prototype, but New Holland claims the hybrid setup cuts fuel use by up to 70% compared to a conventional diesel telehandler while delivering 30% better performance and uptime for its operators.
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The Boring Company, Elon Musk’s tunneling startup, is reportedly facing significant issues with its new project in Nashville, Tennessee. A key subcontractor has walked off the job, alleging that the company has failed to pay for work completed on the “Music City Loop,” claiming they have received only 5% of what they are owed.
We have been following The Boring Company’s expansion efforts closely.
After the relative success of the Las Vegas Loop and several projects that failed to materialize, it looked like the company was winding down until a new proposal in Nashville gained some momentum.
However, a new report from the Nashville Banner indicates that the project is hitting a major wall.
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Shane Trucking and Excavating, a local contractor hired to handle preliminary work for the tunnel project, pulled its workers off the site this Monday. William Shane, the owner of the company, told the Banner that The Boring Company has “ghosted” them and failed to pay invoices totaling in the six figures.
According to Shane, the payment terms were initially set for every 15 days, then unilaterally switched to 60 days. Now, he claims it has been over 120 days since they broke ground, and his company has received only a fraction of the payment due.
“We were really skeptical from the beginning, and then since then, things pretty much just went downhill,” Shane said.
The contractor was reportedly responsible for preparing the launch pad for “Prufrock,” The Boring Company’s proprietary tunnel boring machine (TBM). We previously reported on Prufrock’s capabilities, with the company claiming it can dig tunnels significantly faster than conventional machines, supposedly porpoising directly from the surface to avoid digging expensive launch pits.
If the launch pad isn’t finished because the excavator wasn’t paid, Prufrock isn’t digging anywhere.
This isn’t the first time we’ve heard of payment issues involving Musk-led companies. Tesla has been known to not pay its bills, leading to small companies going bankrupt.
As The Boring Company was stiffing Shane on the bills, the company tried to poach workers from its own contractor and lied about it:
“One of their head guys texts two of my welders, offering them a job for $45 an hour from his work phone,” Shane described, noting that the same TBC employee denied sending the texts when confronted with screenshots. “That’s actually a breach of contract.”
On top of the missed payments, Shane alleges serious safety concerns. They made several official complaints to OSHA:
“Where we’re digging, we’re so far down, there should be concrete and different structures like that to hold the slope back from falling on you while you’re working. Where most people use concrete, they currently have — I’m not even kidding — they currently have wood. They had us install wood 2x12s.”
The Boring Company Vice President David Buss blamed missed payments on “invoicing errors” in a statement to the Banner:
“It does look like we had some invoicing errors on that. It was, you know, unfortunately, too common of a thing, but I assured them that we are going to make sure that invoices are wired tomorrow.”
He also said that he would look into the poaching allegations, but added that he is not aware of any OSHA complaints.
The “Music City Loop” was pitched as a solution to connect downtown Nashville to the airport, a route that is notoriously congested.
The Boring Company claims it can complete the project without public money, but there are some obvious issues with its financing.
Electrek’s Take
I’ve been willing to give them the benefit of the doubt on the “Loop” concept. While it falls short of the original “autonomous pods” vision or the “Hyperloop” speed dreams, the system in Las Vegas does work to move people, even if it is just Teslas in tunnels driven by humans.
There’s just no evidence that it would be more efficient than any other public transit system.
When Musk launched The Boring Company’s first test tunnel in LA, I asked him if he had any simulations showing his “loop” system to be more efficient. He said that they were working on that. That was 7 years ago.
Therefore, while The Boring Company appears to have achieved marginal improvements in tunnel boring, mainly when it comes to smaller tunnels; it has yet to show clear evidence that its Loop system is a better solution than any other public transit system.
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