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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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Fintechs like Block and PayPal are battling like never before to be your all-in-one online bank

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Fintechs like Block and PayPal are battling like never before to be your all-in-one online bank

Jack Dorsey, co-founder of Twitter Inc., speaks during the Bitcoin 2021 conference in Miami, Florida, U.S., on Friday, June 4, 2021.

Eva Marie Uzcategui | Bloomberg | Getty Images

Jack Dorsey’s Block got started as Square, offering small businesses a simple way to accept payments via smartphone. Affirm began as an online lender, giving consumers more affordable credit options for retail purchases. PayPal upended finance more than 25 years ago by letting businesses accept online payments.

The three fintechs, which were each launched by tech luminaries in different eras of Silicon Valley history, are increasingly converging as they seek to become virtual all-in-one banks. In their latest earnings reports this month, their lofty ambitions became more clear than ever.

Block was the last of the three to report, and the high-level numbers were troubling. Earnings and revenue missed estimates, sending the stock down 18%, its steepest drop in five years. But to hear Dorsey discuss the results, Block is successfully implementing a strategy of offering consumers the ability to pay businesses by smartphone, send money to friends through Cash App, and access credit and debit services while also getting more ways to invest in bitcoin.

In 2024, we expanded Square from a payments tool into a full commerce platform, enhanced Cash App’s financial services offerings, and restructured our organization,” Dorsey said on Block’s earnings call on Thursday after the bell.

Block and an expanding roster of fintech rivals have all come to see that their moats aren’t strong enough in their core markets to keep the competition away, and that the path to growth is through a diverse set of financial services traditionally offered by banks. They’re playing to an audience of digital-first consumers who either didn’t grow up using a brick-and-mortar bank or realized at an early age that they had no need to ever set foot in a physical branch, or to meet with a loan officer or customer service rep.

“Longer term, we see a significant opportunity to grow actives, particularly among that digital-native audience like Millennial and Gen Z,” Block CFO Amrita Ahuja said on the earnings call.

Block shares drop after reporting earnings and revenue miss

As part of its expansion, Block has encroached on Affirm’s turf, with an increasing focus on buy now, pay later (BNPL) offerings that it picked up in its $29 billion purchase of Afterpay, which closed in early 2022. Block’s market share in BNPL increased by one point to 19%, while Affirm held its position at 17%, according to a recent report from Mizuho. Both companies are outperforming Klarna in BNPL, the report said.

Block’s BNPL play is now tied into Cash App, with an integration activated this week that gives users another way to make purchases through a single app. With Cash App monthly active users stagnating at 57 million for the last few quarters, the company is focused on engagement rather than rapid user acquisition.

“We think that there is significant opportunity for growth longer term, but there are some deliberate decisions we’ve made as part of our banker-based strategy in the near term” that have kept user numbers from increasing, Ahuja said. “This is a part of our continuous enhancements to drive healthy customer engagement as we bank our base.”

Compared to Block, Wall Street had a very different reaction to Affirm’s earnings earlier this month, pushing the stock up 22% after the company’s results sailed past estimates.

Affirm founder and CEO Max Levchin, who was previously a co-founder of PayPal, built his company with the promise of giving consumers lower-cost and easy-to-tap intstallment loans for purchases like electronics, jewelry and travel.

The BNPL battlefront

Watch CNBC's full interview with PayPal CEO Alex Chriss

Under the leadership of CEO Alex Chriss, who took over the company in September 2023, PayPal is in the midst of a turnaround that involves working to better monetize products like Braintree and Venmo and joining the world of physical commerce with a debit card inside its mobile app.

Investors responded positively in 2024, pushing the stock up almost 40% after a brutal few years. But the stock dropped 13% after its earnings report, even as profit and revenue were better than expected. PayPal’s total payment volume for the quarter hit $437.8 billion, slightly below projections, while transaction margins rose to 47% from 45.8% — a sign of improving profitability.

One of Chriss’ big pushes is to get more out of Venmo, which has long been a popular way for friends to pay each other but hasn’t been a big hit with businesses. Venmo’s total payment volume in the quarter rose 10% year-over-year, with increased adoption at DoorDash, Starbucks, and Ticketmaster.

PayPal is also promoting Venmo’s debit card and “Pay With Venmo,” which saw 30% and 20% monthly active growth in 2024, respectively. The company is introducing new services to improve merchant retention, including its Fastlane one-click checkout feature, designed to compete with Apple Pay and Shopify’s Shop Pay.

Last year, the company launched PayPal Everywhere, a cashback-driven initiative designed to boost engagement within its mobile app. Chriss said on the earnings call that it’s “driving significant increases in debit card adoption and opening new categories of spend.”

As with virtually all financial services products, the new offerings from Block, Affirm and PayPal are designed to produce growth but not at the expense of profit. Banks operate at low margins, in large part because there’s so much competition for lower-priced loans and better cash-back options. There’s also all the costs associated with underwriting and compliance.

That’s the environment in which fintechs have to operate, though without the costs of running a network of physical branches.

Levchin talks about helping customers spend less, not more. And Block acknowledges the need for hefty investments to reach the company’s desired outcome.

“This is a part of our continuous enhancements to drive healthy customer engagement as we bank our base,” Ahuja said. “We’ve made investments in critical areas like compliance, support and risk. And as we’ve done that, we’ve progressed more of our actives through our identity verification process, which in turn, unlocks greater access to those actives to our full suite of financial tools.”

WATCH: CNBC’s full interview with PayPal CEO Alex Chriss

Watch CNBC's full interview with PayPal CEO Alex Chriss

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Trump to shut down all 8,000 EV charging ports at federal govt buildings

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Trump to shut down all 8,000 EV charging ports at federal govt buildings

The Trump administration is shutting down EV chargers at all federal government buildings and is also expected to sell off the General Services Administration‘s (GSA) newly bought EVs.

GSA, which manages all federal government-owned buildings, also operates the federal buildings’ EV chargers. Federally owned EVs and federal employee-owned personal EVs are charged on those 8,000 charging ports.

The Verge reports it’s been told by a source that plans will be officially announced internally next week, and it’s seen an email that GSA has already sent to regional offices about the plans:

“As GSA has worked to align with the current administration, we have received direction that all GSA-owned charging stations are not mission-critical.”

The GSA is working on the timing of canceling current network contracts that keep the EV chargers operational. Once those contracts are canceled, the stations will be taken out of service and “turned off at the breaker,” the email reads. Other chargers will be turned off starting next week.

“Neither Government Owned Vehicles nor Privately Owned Vehicles will be able to charge at these charging stations once they’re out of service.” 

Colorado Public Radio first reported yesterday that it had seen the email that was sent to the Denver Federal Center, which has 22 EV charging stations at 11 locations.

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The Trump/Elon Musk administration has taken the GSA’s fleet electrification webpage offline entirely. (An archived version is available here.)

The Verge‘s source also said that the GSA will offload the EVs it bought during the Biden administration, although it’s unknown whether they’ll be sold or stored.

Read more: Trump just canceled the federal NEVI EV charger program


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Hackers steal $1.5 billion from exchange Bybit in biggest-ever crypto heist

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Hackers steal .5 billion from exchange Bybit in biggest-ever crypto heist

Ben Zhou, chief executive officer of ByBit, during the Token2049 conference in Singapore, on Thursday, Sept. 14, 2023. 

Joseph Nair | Bloomberg | Getty Images

Bybit, a major cryptocurrency exchange, has been hacked to the tune of $1.5 billion in digital assets, in what’s estimated to be the largest crypto heist in history.

The attack compromised Bybit’s cold wallet, an offline storage system designed for security. The stolen funds, primarily in ether, were quickly transferred across multiple wallets and liquidated through various platforms.

“Please rest assured that all other cold wallets are secure,” Ben Zhou, CEO of Bybit, posted on X. “All withdrawals are NORMAL.”

Blockchain analysis firms, including Elliptic and Arkham Intelligence, traced the stolen crypto as it was moved to various accounts and swiftly offloaded. The hack far surpasses previous thefts in the sector, according to Elliptic. That includes the $611 million stolen from Poly Network in 2021 and the $570 million drained from Binance in 2022.

Analysts at Elliptic later linked the attack to North Korea’s Lazarus Group, a state-sponsored hacking collective notorious for siphoning billions of dollars from the cryptocurrency industry. The group is known for exploiting security vulnerabilities to finance North Korea’s regime, often using sophisticated laundering methods to obscure the flow of funds.

“We’ve labelled the thief’s addresses in our software, to help to prevent these funds from being cashed-out through any other exchanges,” said Tom Robinson, chief scientist at Elliptic, in an email.

The breach immediately triggered a rush of withdrawals from Bybit as users feared potential insolvency. Zhou said outflows had stabilized. To reassure customers, he announced that Bybit had secured a bridge loan from undisclosed partners to cover any unrecoverable losses and maintain operations.

The Lazarus Group’s history of targeting crypto platforms dates back to 2017, when the group infiltrated four South Korean exchanges and stole $200 million worth of bitcoin. As law enforcement agencies and crypto tracking firms work to trace the stolen assets, industry experts warn that large-scale thefts remain a fundamental risk.

“The more difficult we make it to benefit from crimes such as this, the less frequently they will take place,” Elliptic’s Robinson wrote in a post.

WATCH: Crypto stocks plunge

Crypto stocks plunge despite SEC dropping suit against Coinbase

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