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 storm hit. The power’s out. With all the damage around you, it looks like you might be without power for a few days (at least). But you planned for this. You have a home backup battery. What happens now?
If you’re considering a home backup battery, or you already have one and haven’t needed it yet, you might be wondering what you’re supposed to do when the inevitable happens. The good news is: you probably won’t have to do much at all.
Modern home batteries are paired with an automatic transfer switch. That’s a switch, usually installed near your home’s electrical panel, that allows you to go from grid power, to battery, and back. And, because it’s automatic, you don’t have to do anything at all.
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The instant the grid goes down, the automatic transfer switch recognizes the loss of power and automagically disconnects your house from the grid, seamlessly connecting it to your backup battery instead. Your lights stay on, the refrigerator keeps humming, and whatever else you’ve chosen to back up just keeps on keeping on. In some cases, the transition to battery power happens so smoothly that you might not even realize the neighborhood’s lost power, not noticing the neighbors’ dark windows until you step outside.
When the power comes back, that side of the switch gets energized, and it does its thing again, only in reverse – switching you back from battery to grid power and intelligently re-charging the battery in anticipation for the next blackout.
How long will my battery last?
13.5 kWh Powerwall battery; via Tesla.
Unfortunately, this is one of those questions that doesn’t have an easy answer. In the simplest terms, if you have a small battery and try to keep the AC running, you might run out of juice in a few hours. On the other hand, if you have great big battery and save its electrons for just the barest essentials (a few lights, a laptop, and a phone or radio, for example) you might never run out of power.
To put some numbers to that, a 31 cu. ft. Samsung RF32CG5400SRAA stainless steel refrigerator is rated at 785 kWh/year. That works out to about 2.15 kWh/day. Factor in 20-40% higher energy needs for warmer temperatures, a few daily door openings, defrost cycles, inverter losses, etc. and you’re looking at 18-22 kWh of usable battery capacity to keep that thing running for a full week on battery power. Now do that same math for every appliance you deem a “must have,” then do the “nice to haves,” and on down the line.
What you need to do, in other words, is talk to the experts. Let them know what appliances you need to keep running, how long you want to prepare for, and let them do the math to help determine which battery solution is right for you.
I’ve included a video that covers the process of picking a solar battery from EnergySage (a trusted affiliate partner), below, and invite you to share some of your own backup battery-picking experiences in the comments.
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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Just days after Chevrolet beat the mighty Ford Mustang GTD’s Nürburgring track record with their Corvette ZR1 and ZR1X, Ford went back to the ‘Ring to reclaim some glory. They didn’t bring a Mustang along, though – they showed up with an electric van, and record-setting hot shoe Romain Dumas behind the wheel.
* it’s not your typical van. It’s a SuperVan.
Ford took back a fair bit of Chevy’s headline-grabbing glory this week when LeMans-winning driver Romain Dumas lapped the 12.9 mile Green Hell in just 6 minutes and 48.393 seconds – a blazing performance that makes the 2000 hp Ford SuperVan 4.2 the ninth fastest car to ever blast around the storied German racetrack.
Dumas is no stranger to the Nürburgring’s Nordschleife. He was first overall at the 2007 24 hour race there. He also holds the outright Nürburgring track record for EVs, which he set back in 2019 behind the wheel of the Volkswagen ID.R, completing the circuit in 6 minutes and 05.336 driving the Volkswagen ID.R.
Take my advice, GM: it’s time to drag Warren Mosler back home from the Virgin Islands, figure out where Rod Trenne’s hiding, and get them to build you a proper, 900 kg electric ‘Vette. Y’all let me know if you need help setting that up.
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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EV drivers who use the Pennsylvania Turnpike just got a jolt of good news: Two Applegreen DC fast charging stations have come online, adding to the growing network of over 60 EV chargers along the 360-mile toll road that links Pittsburgh, Harrisburg, and Philadelphia.
The new 400 kW Applegreen Electric charging stations are at the PA Turnpike’s North Somerset (MP 112.3 westbound) and South Somerset (MP 112.3 eastbound) Service Plazas. Each site includes two DC fast chargers for a total of four charging ports, with two NACS and two CCS plugs at each service plaza. The PA Turnpike says the sites are equipped to be expanded.
The Pennsylvania Turnpike plugged in its first EV charger in April 2014. A decade later, more than 60 charging stations are online at eight of its service plazas, giving EV drivers a reliable boost across the state. And thanks to a new partnership with Applegreen Electric, 80 new universal EV chargers are on the way. By 2027, all 17 service plazas will feature DC fast chargers.
“We are pleased to offer our EV customers convenient access to the latest, fastest technology – without leaving the PA Turnpike,” said Director of Facilities Operations Keith Jack.
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The EV chargers at North Somerset and South Somerset, along with an EV charger at the Hickory Run Service Plaza scheduled to open this fall, were funded with grants from the Pennsylvania Department of Environmental Protection’s Driving PA Forward program. The chargers at nine service plazas scheduled to open in 2027 are being funded through grants from the Biden administration’s federal National Electric Vehicle Infrastructure (NEVI) program.
Applegreen Electric chief executive Eugene Moore noted that the PA Turnpike’s fast charger rollout “marks a key step in building a connected corridor with Pennsylvania as a vital part of the seamless network that now spans New Jersey, New York, Connecticut, and Delaware. With more to come soon in Ohio and Massachusetts, we’re accelerating the rollout of reliable, accessible EV infrastructure across the region.”
Applegreen is deploying fast chargers on the New Jersey Turnpike, with which it now has an exclusive agreement – it’s taking over from Tesla.
The 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. 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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