"California's biggest electric utilities pulled off a record-breaking test..." reports Semafor, "during the 7pm-9pm window that is typically its time of peak demand as people come home from work."

Pacific Gas & Electric and other top California power companies switched on residential batteries in more than 100,000 homes and drew power from them into the broader statewide grid. The purpose of the test — the largest ever in the state, which has by far the most home battery capacity in the U.S. — was to see just how much power is really there for the utility to tap, and to ensure it could be switched on, effectively running the grid in reverse, without causing a crash.

The result, which the research firm Brattle published this week, was 535 megawatts, equal to adding a big hydro dam or a half-sized nuclear reactor at a fraction of the cost. "Four years ago this capacity didn't even exist," Kendrick Li, PG&E's director of clean energy programs, told Semafor. "Now it's a really attractive option for us. It would be silly not to harness what our customers have installed...." Last week's test proved that in times of peak demand, PG&E can lean on its customers' batteries rather than turn on a gas-fired peaker plant or risk a blackout, Li said.

Virtual power plants (VPPs) also facilitate the addition of more solar energy on the grid: At the moment, California has so much solar generation at peak hours that it can push the wholesale power price close to or even below zero, a headache for grid managers and a disincentive for renewable project developers. The careful manipulation of networked residential batteries smooths out the timing disparity between peak sunshine at midday and peak demand in the evening, allowing the excess to be soaked up and redeployed when it's actually needed, and making power cheaper for everyone. The expanded use of VPPs shouldn't be noticeable to battery owners, Li said, except for the money back on their power bill; nothing about the process prevents them from running their AC or dishwasher while their battery is being tapped. The network can also run in reverse, with the utility taking excess power from the grid at times of low demand and sending it into home batteries for storage.

California could easily reach over a gigawatt of VPP capacity within five years, Li said. Nationwide, a Department of Energy study during the Biden administration forecast that VPP capacity could reach up to 160 gigawatts by 2030, essentially negating the need for dozens of new fossil fuel power plants, with no emissions and at a far lower cost. In 2024, utilities in 34 states moved to initiate or expand VPP networks, according to the advocacy group VP3.

Even with a reduction in federal credits, virtual power plants "offer a way for residential solar-plus-storage systems to remain economically attractive for homeowners — who get paid for the withdrawn power," the article points out — and "a way to make better use of clean energy resources that have already been built."

Sunrun's distributed battery fleet "delivered more than two-thirds of the energy," notes Electrek, "In total, the event pumped an average of 535 megawatts (MW) onto the grid — enough to power over half of San Francisco... This isn't a one-off. Sunrun's fleet already helped drop peak demand earlier this summer, delivering 325 MW during a similar event on June 24.

"The company compensates customers up to $150 per battery per season for participating."

Abstract credit: https://slashdot.org/story/445384

A Manhattan jury convicted Tornado Cash co-founder Roman Storm on Wednesday of conspiring to operate an unlicensed money-transfer business, though jurors deadlocked on charges of money laundering conspiracy and sanctions violations after three days of deliberation.

Federal prosecutors alleged Storm helped cybercriminals launder more than $1 billion through the cryptocurrency mixing platform, which launched in 2019 as a decentralized protocol designed to obscure transaction origins by pooling and redistributing funds through smart contracts.

Abstract credit: https://slashdot.org/story/445258

Heise, a German IT news publisher, reports that the German state of Brandenburg is getting the world's tallest wind turbine, with an overall height of 300 meters (approximately 365 meters including rotor blades), designed to capture so-called third-level winds at higher altitudes. The article also includes a short 3D animation illustrating the construction and its size relative to standard modern wind turbines.

The wind turbine uses a dual-framework base instead of a traditional closed tower to access stronger high-altitude winds, aiming to match offshore energy output while keeping onshore operating costs.

According to Heise, the prototype could lead to the installation of up to 1,000 units across Germany -- fitting seamlessly between existing wind farms without needing extra land.

Abstract credit: https://hardware.slashdot.org/story/25/07/16/2120247/germany-is-building-the-worlds-tallest-wind-turbine

U.S. prosecutors and the Commodity Futures Trading Commission (CFTC) have officially closed their investigations into Polymarket, the decentralized, blockchain-powered prediction market platform where users bet with real cryptocurrency on the outcomes of future events.

The DOJ was investigating Polymarket last year, reportedly for allowing U.S. users to place bets on the site despite Polymarket being required to block U.S. traders

The FBI raided Polymarket CEO Shayne Coplan's Manhattan apartment last November, seizing his phone and electronic devices. A source close to the matter told The New York Post it was politically motivated due to Polymarket's successful prediction of Trump's election win. It's "grand political theater at its worst," the source said. "They could have asked his lawyer for any of these things. Instead, they staged a so-called raid so they can leak it to the media and use it for obvious political reasons."

Abstract credit: https://slashdot.org/story/25/07/15/206217/us-prosecutors-close-probe-into-polymarket-betting-website

In March an executive order directed America's treasury secretary to create two stockpiles of crypto assets (to accompany already-existing "strategic reserves" of gold and foreign currencies). And the Washington Post notes these new stockpiles would include "cryptocurrency seized by federal agencies in criminal or civil proceedings." But how big would America's "Strategic Bitcoin Reserve" be — and what other cryptocurrencies would the U.S. government hold in its "Digital Asset Stockpile"?

"New data on what crypto cash the U.S. government has seized may now provide some answers.

It suggests the crypto reserves will together hold more than $21 billion in cryptocurrency... The stockpile will be funded with whatever crypto assets the Treasury holds other than bitcoin, leaving the stockpile's composition to be largely determined by a mixture of chance and criminal conduct. That unconventional method for selecting government financial holdings had the benefit of making the reserves cost-neutral for the taxpayer.

It also provided a way to estimate what exactly might go into the two pools before results are released from an official accounting of U.S. crypto holdings that is underway.Because government seizures are disclosed in court documents, news releases and other sources, crypto-tracking firms can use those notices to monitor which digital assets the U.S. government holds. Chainalysis, a blockchain analytics firm, reviewed cryptocurrency wallets that appear to be associated with the U.S. government for The Washington Post. The company estimated how much bitcoin it holds, and the other crypto tokens in its top 20 digital holdings as of May 13, by tracking transactions involving those wallets.

The United States' top 20 crypto holdings according to Chainalysis are worth about $20.9 billion as of 3 p.m. Eastern on May 28, with $20.4 billion in bitcoin and about $493 million in other digital assets. It has been scooped up from crimes such as stolen funds, scams and sales on dark net markets. Those estimates put the U.S. government's top crypto holdings at less than the approximately $25 billion worth of oil held in the U.S. Strategic Petroleum Reserve. Their value is nearly double the Fed's listing for U.S. gold holdings, although that figure uses outdated pricing and would be over $850 billion at current prices...

The crypto tokens headed for the U.S. Digital Asset Stockpile according to the Chainalysis list include ethereum, the world's second-largest digital asset, and a string of other crypto tokens with punier name recognition. They include derivatives of bitcoin and ethereum that mirror those cryptocurrencies' prices, several stable coins designed to be pegged in value to the U.S. dollar, and 10 tokens tied to specific companies, including the cryptocurrency exchanges FTX, which imploded in 2022 after defrauding customers, and Binance.

Two U.S. states have already passed legislation creating their own cryptocurrency reserve funds, the article points out. But ethereum co-founder Vitalik Buterin complained to the Post in March that crypto's "original spirit...is about counterbalancing power" — including government and corporate power, and getting too close to "one particular government team" could conflict with its mission of decentralization and openness. And he's not the only one concerned:

Austin Campbell, a professor at New York University's business school and a principal at crypto advisory firm Zero Knowledge, sees hypocrisy in crypto enthusiasts cheering the government's strategic reserves. The bitcoin community in particular "has historically been about freedom from sovereign interference," he said.

Abstract credit: https://slashdot.org/story/442693

publication croisée depuis : https://lemmy.bestiver.se/post/410366

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A German nuclear fusion startup called Proxima Fusion has unveiled its "Stellaris" fusion power plant designed to operate reliably and continuously without the instabilities of tokamaks. It's backed by $65 million in funding, with plans to build a fully operational fusion reactor by 2031. TechCrunch reports:

Tokamaks and stellarators are types of fusion reactors that use electromagnets to contain fusion plasma. Tokamaks rely on external magnets and an induced plasma current but are known for instability. Stellarators, by contrast, use only external magnets, which, in theory, enable better stability and continuous operation. However, according to Dr. Francesco Sciortino, co-founder and CEO of Proxima Fusion, Proxima's "Stellaris" design is the first peer-reviewed fusion power plant concept that demonstrates it can operate reliably and continuously, without the instabilities and disruptions seen in tokamaks and other approaches.

Proxima published its findings in Fusion Engineering and Design, choosing to share this information publicly to support open-source science. "Our American friends can see it. Our Chinese friends can see it. Our claim is that we can execute on this faster than anyone else, and we do that by creating a framework for integrated physics, engineering, and economics. So we're not a science project anymore," Sciortino told TechCrunch over a call. "We started out as a group of founders saying it's going to take us two years to get to the Stellaris design ... We actually finished after one year. So we've accelerated by a year," he added.

Abstract credit: https://slashdot.org/story/439243

French journal Le Monde is sharing its articles via RSS feeds (and longer via Tweeter).

Check it out (french content): https://www.lemonde.fr/actualite-medias/article/2019/08/12/les-flux-rss-du-monde-fr_5498778_3236.html

The US Department of Justice (DOJ) has been authorized to sell approximately 69,370 Bitcoin seized in connection with the Silk Road darknet marketplace, a haul currently valued at around $6.5 billion, DB News reported Wednesday. The decision is set to end a years-long legal dispute over the BTC stash's ownership. On December 30, a federal judge ruled in favor of the DOJ's request to liquidate the crypto assets, the report said. Battle Born Investments, which had asserted a claim to the Bitcoin stash through a bankruptcy estate, ultimately failed in its bid to delay the sale.

As noted, the group had pursued a Freedom of Information Act (FOIA) request seeking the identity of "Individual X," who initially surrendered Bitcoin, but the effort also proved unsuccessful. Battle Born's legal counsel criticized the DOJ's handling of the case, alleging the department employed "procedural trickery" in its use of civil asset forfeiture to avoid scrutiny. The DOJ, in its arguments before the court, cited Bitcoin's price volatility as motivation for seeking a quick sale of the seized assets. A DOJ spokesperson, when contacted, stated, "The Government will proceed further consistent with the judgment in this case."

The update comes after the US Supreme Court refused to hear an appeal challenging the seizure of the Bitcoin stash, which was brought by Battle Born last October. The decision likely paved the way for the US government to sell Bitcoin, which was valued at $4.4 billion at the time. The US Marshals Service is expected to manage the liquidation process, which, if confirmed, will be one of the largest sales of seized crypto in history.

Abstract credit: https://slashdot.org/story/437425

cross-posted from: https://lemmy.world/post/23454650

Summary

France’s Flamanville 3 nuclear reactor, its most powerful at 1,600 MW, was connected to the grid on December 21 after 17 years of construction plagued by delays and budget overruns.

The European Pressurized Reactor (EPR), designed to boost nuclear energy post-Chernobyl, is 12 years behind schedule and cost €13.2 billion, quadruple initial estimates.

President Macron hailed the launch as a key step for low-carbon energy and energy security.

Nuclear power, which supplies 60% of France’s electricity, is central to Macron’s plan for a “nuclear renaissance.”

The world's first nuclear-powered battery — a diamond with an embedded radioactive isotope — could power small devices for thousands of years, according to scientists at the UK's University of Bristol.

The diamond battery harvests fast-moving electrons excited by radiation, similar to how solar power uses photovoltaic cells to convert photons into electricity, the scientists said.

Scientists from the same university first demonstrated a prototype diamond battery — which used nickel-63 as the radioactive source — in 2017. In the new project, the team developed a battery made of carbon-14 radioactive isotopes embedded in manufactured diamonds. The researchers chose carbon-14 as the source material because it emits short-range radiation, which is quickly absorbed by any solid material — meaning there are no concerns about harm from the radiation. Although carbon-14 would be dangerous to ingest or touch with bare hands, the diamond that holds it prevents any short-range radiation from escaping. "Diamond is the hardest substance known to man; there is literally nothing we could use that could offer more protection," Neil Fox, a professor of materials for energy at the University of Bristol, said in the statement...

A single nuclear-diamond battery containing 0.04 ounce (1 gram) of carbon-14 could deliver 15 joules of electricity per day. For comparison, a standard alkaline AA battery, which weighs about 0.7 ounces (20 grams), has an energy-storage rating of 700 joules per gram. It delivers more power than the nuclear-diamond battery would in the short term, but it would be exhausted within 24 hours. By contrast, the half-life of carbon-14 is 5,730 years, which means the battery would take that long to be depleted to 50% power....

[A] spacecraft powered by a carbon-14 diamond battery would reach Alpha Centauri — our nearest stellar neighbor, which is about 4.4 light-years from Earth — long before its power were significantly depleted.

The battery has no moving parts, according to the article. It "requires no maintenance, nor does it have any carbon emissions."

Abstract credit: https://slashdot.org/story/436735/outstanding

Legislation was introduced in the Texas House of Representatives on Thursday to establish a strategic bitcoin reserve, which could serve as a proving ground for the U.S. Treasury. The proposed bill would enable the state to start building a strategic bitcoin reserve by accepting taxes, fees and donations in bitcoin that would be held for a minimum of five years, Republican state Rep. Giovanni Capriglione announced on an X Spaces event Thursday.

The Texas bill aims to provide a way to strengthen the state's fiscal stability and establish it as a leader in bitcoin innovation, according to the Satoshi Action Fund, a nonprofit bitcoin advocacy group that worked with Capriglione on the bill. "Probably the biggest enemy of our investments is inflation," Capriglione said. "A strategic bitcoin reserve, investing in bitcoin, would be a win-win for the state." "I just filed the bill ... entitled 'An act relating to the establishment of a bitcoin reserve within the state treasury of Texas and the management of cryptocurrencies by governmental entities,'" he said later.

"My goal is to make this bill as big and as broad as possible," Capriglione said. "This initial step is to allow some optionality and flexibility on it, but if I am able to get support from other legislators, we will make it even stronger."

It's "unlikely" a U.S. strategic bitcoin reserve will be established, "but it helps get animal spirits back into the market," Needham's John Todaro told CNBC. He said it's also "unlikely to drive material price gains, as we do not expect the U.S. government will purchase bitcoin in any meaningful capacity, but it's an item that drives excitement and optimism."

Abstract credit: https://slashdot.org/story/436405