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Where a Massive Solar Storm Could Take Down the US Power Grid for Millions

1 month 4 weeks ago
A new study published Friday in AGU Advances "depicts the most advanced picture yet of how a rare but massive solar storm could affect some US industries and electric systems more than others," reports CNN. "During a 250-year solar storm, the East Coast would have widespread potential for grid failure." Researchers modeled what a Carrington Event — a 1-in-150-year geomagnetic storm or even rarer — could mean for the modern day. They estimate the US economy would lose about $1.5 billion to $2 billion per day from direct and indirect costs, as millions of people face power outages. The findings show the most vulnerable areas are the Northeast and the Northern Plains, especially locations at higher latitudes. No one knows when the next big storm will hit. While the most severe geomagnetic storms are labeled as once-in-a-century or rarer, these events don't follow a fixed schedule. "That timing only averages out on very long timescales," said Anna Kelbert, a geophysicist at the Harvard-Smithsonian Center for Astrophysics, who was not involved in the study but previously studied solar storm effects on power grids. "The event can occur at any time, as soon as a week from now, or centuries later...." [Shawn Dahl, service coordinator at the Space Weather Prediction Center operated by the National Oceanic and Atmospheric Administration in Boulder, Colorado], said the sun is now coming down from a period of heightened activity, which is also when some of the biggest storms to hit Earth have occurred in the past. "We still need a lot of work to be ready...." "We haven't really seen events like this size in the modern era, where we've had all of this high technology and we've had the power grid of this size," said Ed Oughton, researcher at George Mason University and lead author of the new study... Because the US grid's actual structure is proprietary for security reasons, the team used engineering models to create various network and transformer setups including the 10,464 substations and 16,256 transmission lines found across the country... The grid structure also contributes to higher risk in some areas. For instance, the eastern US is linked together in a single grid interconnection. A voltage issue in Maine, if not isolated early, could cascade through the grid to Washington, DC. The West works similarly, whereas the Texas interconnection operates mostly within the state... Power is restored over time depending on any alternative electrical paths that could bypass the substation or availabilities of spare transformers, for instance. "This nationwide analysis shows that we are currently ill-prepared to face a major magnetic storm, and that the societal impacts would be catastrophic," Kelbert said. "The study estimates power disruptions for 5.1 million people and 135,000 businesses," according to the article, and "The outages could last from hours to days to weeks depending on the damage and resources available to get back online, said Oughton."

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EditorDavid

TiVo Will Start Charging Fees For Its Automatic Commercial Break-Skipping Feature 'SkipMode'

1 month 4 weeks ago
TiVo is notifying customers about changes to "one of its longest-standing and most popular DVR features," reports the blog Cord Cutter News: Starting November 2, 2026, the current version of SkipMode that allows users to jump over commercial breaks with a single button press on the remote will no longer be available. The company is instead preparing to test a new paid add-on called Premium Auto Commercial Skip. SkipMode has been a core part of the TiVo experience for years. After a supported show finished recording, the service added markers that let viewers leap from the end of one program segment directly to the start of the next, bypassing the ads in between. On newer TiVo Experience 4 devices, users could even set the feature to automatic so commercials were skipped without any remote interaction. The feature was limited to popular prime-time programming on major networks, typically appearing a short time after a show aired. Under the new plan, that one-button and automatic functionality will disappear from the standard service. Viewers will still be able to skip commercials the traditional way by using the 30-second skip button or the fast-forward control on their remotes. Those manual methods have existed on TiVo boxes for more than two decades and do not rely on the company's commercial-detection data. In November, TiVo will offer a 30-day free trial of the new Premium Auto Commercial Skip service. After the trial ends, customers who want to keep the automatic or one-button skip capability will need to add it to their accounts for an extra monthly fee. The company has not yet published the price. Thanks to long-time Slashdot reader AmiMoJo for sharing the article.

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EditorDavid