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As we trend toward more renewables and distributed energy resources (DERs), the design of the electric distribution system itself imposes physical limitations. These system constraints could lead to issues like overloaded power lines and faults that propagate freely.

But what if we could restructure the underlying system to support greater renewable integration and system resilience? To that end, a National Renewable Energy Laboratory (NREL)–led project is working on a new type of grid device enabled by silicon carbide (SiC) switches and other medium voltage (MV) power electronics that could segment sections of the grid, providing advanced control for flexibility and resilience for our power systems.

The project team is first designing a megawatt-scale prototype converter that provides native “back-to-back” conversion — AC to AC power — at distribution voltages (i.e., not requiring transformers to step down voltage to levels typically used in electronic power conversion). By using MV SiC-based power modules, the converters could be 1/5th the size and 1/10th the weight of alternate equivalent systems, which are trailer-sized and include heavy transformers. Then the team will connect the power converter into NREL’s MV testbed to validate new grid control approaches that the prototype enables.

The project is named “Grid Application Development, Testbed, and Analysis for MV SiC (GADTAMS)” and is funded by the Department of Energy’s Advanced Manufacturing Office.

The NREL-led GADTAMS project is developing and demonstrating smaller and lighter alternatives for direct medium-voltage connections on the grid, which could enable new resilient grid architectures.

“With back-to-back converters between feeders, we can go one step higher in providing resilience across the distribution system,” said Akanksha Singh, a project lead at NREL.

“This technology wasn’t necessary before because we didn’t have so many distributed energy resources on the system, but now we have feeders that are becoming saturated with PV; apart from storage, these feeders don’t have anywhere to inject that excess power,” Singh said. “A new approach to grid interconnection could enable advanced forms of power sharing and provide much-enhanced grid resilience.”

A future grid that features such converters would have the capability to control the flow of power between sections of the grid, shunting excess load or DER-based generation to feeder sections or adjacent circuits as needed, adding new versatility to power distribution. Networked microgrids could protect against the propagation of faults from one microgrid to the next while still allowing controlled power dispatch between the two systems and the macrogrid as well.

During outage recovery, microgrids could be formed that then stabilize neighboring microgrid systems, as envisioned in NREL’s autonomous energy systems research. In general, the two sides of the converter do not need to be synchronized in frequency or even exact voltage level at all — a major shift from the modern power system. But prior to proving any of these applications, NREL and others will first need to build the necessary controls.

“We are developing very novel controls for upcoming grid architectures,” Singh said. “We have local controls on inverters, and we have hierarchical controls that coordinate between grid partitions. With regard to grid support, these controls can do it all: dynamic stability, frequency support, black start, fault ride-through and protection.”

Unlike anything currently available, the NREL testbed provides an environment to validate medium-voltage grid solutions with real power hardware-in-the-loop and real-time grid simulation. For this project, NREL and partners are interested in the full range of use cases for back-to-back SiC converters and have teamed with utility Southern California Edison to inform on utility applications, as well as industry partners General Atomics and Eaton to seek out a commercial path for the technology.

The SiC converter is being built in two halves by project partners Ohio State University and Florida State University. The three-phase converter prototype will be rated for 330 kW and will implement a full thermal and electrical design appropriate for utility use. Traditionally, the same AC-to-AC conversion process requires stepping-down the voltage to low-voltage levels where conventional power electronics can be used, which results in heavy and expensive transformer equipment. The MV SiC option takes advantage of the superior voltage ratings of devices to minimize weight, cost, and size, which makes the technology far more practical and economical for system-wide deployment.

Still, the converter technology is only one aspect of fulfilling flexible interconnections. This framework currently lacks the standardization that exists for so many other recent grid innovations. At NREL, the project team hopes to collect baseline operational data to jumpstart the conversation around how to integrate MV converters in future grids.

“This is a new application that doesn’t exist anywhere yet. We need standards that apply to how the converters can integrate with regular system operation, like starting up, syncing to the grid, etc.,” Singh said. “We are using IEEE Standards 1547 and 2030.8 as a base, interpreting their rules to implement new controls on MV systems. We are trying to merge the two to understand what will apply to this new approach.”

An entirely new grid architecture and operational flexibility could seem far-out for now, but NREL and partners are showing that these options are viable in the near-term and that NREL has the capability to prepare these solutions for real systems. Learn more about how NREL can validate advanced energy systems at scale.

Article courtesy of NREL.

 

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Out of control Mustang Mach-E in viral video isn’t real, driver arrested for DUI

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Out of control Mustang Mach-E in viral video isn't real, driver arrested for DUI

That viral Tik Tok video showing a “self driving” Ford Mustang Mach-E scraping its way down the highway with a helpless passenger behind the steering wheel praying for his life? California Highway Patrol says the car wasn’t driving itself during the viral highway crash and arrested the driver on suspicion of driving under the influence.

If you have’t seen the video, posted by TikToker Marty Byrde, it shows a self-driving Ford Mustang Mach-E driving down the road, grinding itself against the highway’s concrete Jersey barriers, with the driver behind the wheel, seemingly helpless and afraid and trapped inside an out-of-control vehicle, apparently praying for his life.

There, in a single video, was everyone’s worst fear in an age of electric steering, brake-by-wire, and self-driving cars: a car that loses its mind, killing you and everyone you love and probably a busload of orphans for good measure. (!)

But, thankfully, that doesn’t seem to be what actually happened. At least, not according to the California Highway Patrol (CHP) in Redwood City.

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In case it vanishes, the CHP press release does a good job of explaining the situation as it stands, while emphasizing that any short-form video content is going to lack potentially needed context before the public begins to panic about a Maximum Overdrive sort of scenario.

The preliminary investigation indicates the driver of a green Ford Mustang Mach E, crashed into a red Mitsubishi Mirage then collided with the right shoulder wall near the Holly Street overcrossing. Through our investigation, we determined the vehicle was not operating in autonomous mode and CHP officers arrested the driver on suspicion of driving under the influence, resulting in injuries to another.

While we understand public interest in such incidents, video clips may not capture the complete context or investigative process. The CHP conducts each investigation thoroughly, professionally, and in accordance with the law. We thank the community for its concern and remind motorist to report dangerous driving by calling 9-1-1.

CALIFORNIA HIGHWAY PATROL – REDWOOD

The video was especially surprising given Ford’s BlueCruise excellent track record. The system is good enough, in fact, to have been named the top active driver assistance system (ADAS) by Consumer Reports, surpassing rivals such as GM’s Super Cruise and Tesla’s Autopilot in a comparison test of similar OEM ADAS systems.

The original Tik Toker who recorded the now viral video (I hate that phrase, too, but millions of people have seen it by now) reported that no one seemed hurt in the ensuing accident. Coupled with CHP’s confirmation that the Mach-E wasn’t driving itself during the accident, I’d say that walking out of a hands-free, highway speed crash is as good an endorsement as any … but in case you need another one, this one went 250,000 miles and still had 92% of its battery life left.

Ford is currently offering 0% interest financing for up to 72 months for well-qualified buyers, as well as $1,000 in retail bonus cash in some markets.

SOURCE | IMAGES: CHP, featured image from marty.byrde3.


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No, Trump’s Big Beautiful Bill doesn’t mean it’s too late to benefit from home solar

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No, Trump's Big Beautiful Bill doesn't mean it's too late to benefit from home solar

The Trump Administration’s “Big Beautiful Bill” (BBB) is doing a lot of damage to America’s health, economy, and global standing – but one thing it certainly has not done is make it “too late” for US homeowners to benefit from a rooftop solar system.

Companies like Tesla and Rivian are reeling from the double-whammy of Trump’s BBB ending the $7,500 Federal EV tax credit early and killing the market for carbon tax credits, which provides EV car brands with hundreds of millions of dollars, almost overnight. Still another part of the bill that’s getting a lot of publicity is the death of the 30% tax credit for home solar systems at the end of 2025, which has led many Americans who have been “on the fence” about adding a solar or solar + storage solution to their home to believe they waited too long to go solar.

The good news? It’s not too late. Homeowners who get solar installed and operational by December 31st can still claim a full 30% federal tax credit for 2025, and any unused portion of that credit rolls over to the next tax year.

The better news? Even without the solar tax credit, adding a home solar system with battery backup storage can still deliver a positive ROI.

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Solar benefits go beyond tax credits


home solar storage prices
Home solar installation, via Sunrun.

The most obvious benefit of home solar plus battery storage is that you can produce your own energy (or, if you’ve been following along for a while, electric fuel) for less than it would cost you to buy that energy from your local utility. That’s been true for a while, but it’s about to become even more true.

Outlets like The Washington Post and The Guardian are predicting that household energy bills in Republican-leaning states could rise by more than $600 next year, based on their analyses of the BBB. One study, by energy and climate think tank Energy Innovation, showed energy prices rising by much as 18% by 2035 as a result of Trump’s policies.

Energy Innovation’s analysis skews left, and tends to focus on “left of zero” outcomes. Still, when the corporatist rags start quoting bad numbers and bear markets, you should probably pay attention. Some of the key takeaways of the EI study include:

  • Power generation capacity will fall 340 gigawatts by 2035, raising costs to meet growing demand and damaging industrial competitiveness
  • Wholesale electricity prices will increase 25 percent by 2030 and 74 percent by 2035; electricity rates paid by consumers will increase between 9-18 percent by 2035
  • Household energy costs will increase $170 annually by 2035
  • America loses $980 billion in cumulative GDP through the budget reconciliation window
  • Florida, Texas, Kentucky, and both North and South Carolina stand to be hit the hardest by rising energy costs over the next ten years

Beyond insulating your household budget from rising energy costs, a home solar system can help to insulate your home, too – which means you’ll need less of that lower cost electricity you’re generating to keep it cool in the summer and warm in the winter.

That’s not just me saying that. A study by the Jacobs School of Engineering at UC San Diego study found that during the day, ceilings under tilted solar panels were about 5°F cooler than exposed ceilings, thanks to the panels acting as a shade and creating an air gap that helps dissipate heat. In cool weather, the panels helped homes retain heat, leading to a dual benefit across multiple seasons.

“There are more efficient ways to passively cool buildings, such as reflective roof membranes,” explains Jan Kleissl, a professor of environmental engineering at UC San Diego. “But, if you are considering installing solar photovoltaic, depending on your roof thermal properties, you can expect a large reduction in the amount of energy you use to cool your residence or business.”

Keeping your own personal costs at bay while putting clean, excess energy that’s not stored in your home batteries back into the grid is a win-win that not only reduces your own energy bills but also puts downward pressure on wholesale electricity prices.

What’s more, because the rising costs of energy prices are outpacing interest rates, it might even make sense to finance a solar package – but definitely don’t take my word for that. Talk to a certified financial planner or someone with a fiduciary interest in your money to work the numbers before you start signing stuff.

Original content from Electrek.

READ MORE: It’s time to start recommending some Tesla Powerwall alternatives.


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Not enough: Corvette concept falls 1,000 hp short of Chinese hypercar hype [video]

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Not enough: Corvette concept falls 1,000 hp short of Chinese hypercar hype [video]

The Corvette CX making its debut at this weekend’s The Quail, a Motorsports Gathering, generates more than 2,000 combined hp from its four, individually controlled and torque-vectoring electric motors. It’s staggering power, draped in beautiful bodywork, at a point in time when Corvette is rapidly climbing through the supercar ranks. There’s only one problem with this latest rendition of America’s motorsports icon: China’s has 1,000 more hp.

The specs for the Yangwang U9 Track Edition that leaked last week in BYD filings with the Ministry of Industry and Information Technology (MIIT) read like something out a middle schooler’s journal. 3,000 hp. 0-60 in one second. An electric motor for each wheel. A top speed approaching 300 mph. If it’s real (and there is absolutely zero reason to believe that it isn’t), the BYD will be the performance car benchmark against which all others are measured, like the Ferrari F40 of the 1980s, McLaren F1 of the 1990s, or Bugattis of the twenty-first century.

And that 3,000 hp BYD? That’s a production car, if limited. Meanwhile, the latest no production intent, pie-in-the-sky, no-holds-barred, you can just say shit and no one will ever question it electric hypercar concept from GM falls more than 1,000 hp short, at “just” 2,000 hp.

But don’t count the Corvette out.

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More grease, bigger hammer


Callaway Sledgehammer, via Mecum Auctions.

Whatever you may think of poster-era supercars like the Lamborghini Diablo, Porsche Carerra GT, or Pagani Huayra – or even modern electric hypercars like the Tesla Model S Plaid and Xiaomi SU7 – the one thing they all have in common is that they are all objectively slower than the 255 mph Callaway Corvette Sledgehammer from 1988, above.

I won’t go into the specs of that car (this isn’t that kind of car blog), but the point is that while the Corvette is often overlooked, there is a reason GM’s top-shelf sporty car carries that “King of the Hill” nickname – and the new Corvette CX concept is similarly, undoubtedly, more than just a list of specs in a magazine.

And those specs are seriously impressive. The new Corvette CX concept packs four independent electric motors putting out a combined 2,000 hp and some ungoldy amount of Earth-moving torque under advanced software controls that enable four-wheel torque vectoring for maximum grip and cornering performance, as well as precise steering control under even the heaviest of braking.

Power to those motors comes from the Corvette CX’ 90 kWh lithium-ion battery that’s centrally mounted low in the chassis, giving the car a low center of gravity and, crucially, ideal 50/50 front-rear weight distribution.

Plus: it’s gorgeous


The Corvette team says the CX concept draws from more more than seventy (!) years of Corvette heritage while being a forward looking concept, not a retro piece. Stylistically, the concept seems more visually mature and subdued than its in-production C8 cousin, and seems to promise a return to the C3-5 eras’ cleaner, less busy aesthetics.

Phil Zak, executive design director for Chevrolet, is very rightly proud of the CX’ design. “While the shape of a Corvette has always been expressive and forward-looking, each crease and line has its roots in the generations that came before it. It is aspirational, it is cultural, it is the reason people want to come and work at Chevrolet,” says, Zak. “The CX … demonstrate(s) our design teams stepping away from the constraints of production vehicles and unleashing their creativity. Through this exercise, we’ve added to Corvette and defined the design direction for Corvette moving forward.”

The rest of the official GM press release copy highlights the aviation-inspired canopy, jet-age interior, and an underbody fan system not entirely unlike the system leaked in Tesla patent filings earlier this week. You can see that here:

Aggressively futuristic, yet unquestionably a Corvette, the CX concept shows what an uncompromised future sports car can be. The athletic exterior design, highlighted by the fighter-jet-inspired cockpit canopy, isn’t just about looking powerful – it was shaped in collaboration with the GM Motorsports Aero Group. Every angle was designed with ultimate performance in mind.

On the inside, every aspect of the CX concept was designed to provide an unmatched driving experience. The forward-opening fighter-jet-style canopy automatically raises as you approach. Driver and passenger settle into seating finished in Inferno Red ballistic textile, bolstered to help hold occupants in place during high-g cornering maneuvers. Premium silicone leather, milled aluminum, and low-gloss forged carbon fiber accents give an elevated feel to the driver-focused cabin.

The digital windscreen transforms the windshield into an immersive surround display with real-time performance data. Every major control is elegantly integrated into the steering wheel, keeping the driver’s focus on the road ahead.

The innovations continue underneath the skin with the Vacuum Fan System. Built-in fans draw air through the open-channel bodywork, generating massive downforce and adjusting the airflow over the rear diffuser to refine aerodynamic balance in real-time. The front diffuser and rear wing are both active, adjusting automatically in response to the driver’s inputs to generate maximum grip. The integrated understructure of the CX concept is visible through the aero channels in the bodywork, and the suspension A-arms are wing-shaped to enhance airflow and reduce front-end lift.

CHEVROLET

All in all, the new Corvette CX concept is an impressive piece of engineering and rolling art. It’s also a statement from GM that, while the Corvette may very well be going all-electric in its next iteration, it won’t be going any slower. In fact, the first electric Corvette might even be the best one ever – but don’t say that one too loud (you’ll upset the New Balance crowd).

That said, as a pure concept that almost no one will ever drive and which might never get publicly strapped on to a dyno, it is absolutely baffling that Chevy wouldn’t have just claimed 3,000 hp. Even if it was just to match BYD’s claims and continue to build on a century of hype for American exceptionalism, you know?

That’s my take, anyway – what’s yours? Watch the Corvette CX Concept hype video from Chevrolet, below, then let us know what you think of the latest GM concept in the comments.

Electric Corvette CX concept


SOURCE | IMAGES: GM, Mecum.


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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