Sunday, February 25th, 2024

Time	Event
4:34p	Texas Just Got a New 1.1-Million-Panel Solar Farm An anonymous reader shared this report from Electrek: Renewable developer Clearway Energy Group has completed a 452-megawatt (MW) solar farm in West Texas — and it's huge... It's built on around 5,000 acres of land and features over 1.1 million solar panels... Texas Solar Nova will generate enough electricity to power over 190,000 homes annually. It's got an offtake agreement with telecoms giant Verizon, and agreements with auto component maker Toyota Boshoku and Swedish bearing and seal maker SKF to purchase renewable energy certificates (RECs). Both Toyota Boshoku and SKF have 12-year agreements for RECs. The $660 million facility will "contribute significantly to the local tax base," the company said in a statement, "starting with an estimated $5.4 million in property taxes and wages to be paid in the first year." Read more of this story at Slashdot. (Comment on this)
9:34p	Scientists Create DVD-Sized Disk Storing 1 Petabit (125,000 Gigabytes) of Data Popular Science points out that for encoding data, "optical disks almost always offer just a single, 2D layer — that reflective, silver underside." "If you could boost a disk's number of available, encodable layers, however, you could hypothetically gain a massive amount of extra space..." Researchers at the University of Shanghai for Science and Technology recently set out to do just that, and published the results earlier this week in the journal, Nature. Using a 54-nanometer laser, the team managed to record a 100 layers of data onto an optical disk, with each tier separated by just 1 micrometer. The final result is an optical disk with a three-dimensional stack of data layers capable of holding a whopping 1 petabit (Pb) of information — that's equivalent to 125,000 gigabytes of data... As Gizmodo offers for reference, that same petabit of information would require roughly a six-and-a-half foot tall stack of HHD drives — if you tried to encode the same amount of data onto Blu-rays, you'd need around 10,000 blank ones to complete your (extremely inefficient) challenge. To pull off their accomplishment, engineers needed to create an entirely new material for their optical disk's film... AIE-DDPR film utilizes a combination of specialized, photosensitive molecules capable of absorbing photonic data at a nanoscale level, which is then encoded using a high-tech dual-laser array. Because AIE-DDPR is so incredibly transparent, designers could apply layer-upon-layer to an optical disk without worrying about degrading the overall data. This basically generated a 3D "box" for digitized information, thus exponentially raising the normal-sized disk's capacity. Thanks to long-time Slashdot reader hackingbear for sharing the news. Read more of this story at Slashdot. (Comment on this)
11:34p	Are Corporate Interests Holding Back US Electrical Grid Expansion? Long-time Slashdot reader BishopBerkeley writes: Though it does not come as much of a surprise, a new study highlighted in IEEE Spectrum delves into how corporate profit motives are preventing the upgrading and the expansion of the U.S. electrical grid. The full report can be downloaded here from the source [the nonprofit economic research group NBER]. Besides opening up the market to competition, utilities don't want to lose control over regional infrastructure, writes IEEE Spectrum. "[I]nterregional lines threaten utility companies' dominance over the nation's power supply. In the power industry, asset ownership provides control over rules that govern energy markets and transmission service and expansion. When upstart entities build power plants and transmission lines, they may be able to dilute utility companies' control over power-industry rules and prevent utilities from dictating decisions about transmission expansion." The article begins by noting that "The United States is not building enough transmission lines to connect regional power networks. The deficit is driving up electricity prices, reducing grid reliability, and hobbling renewable-energy deployment. " Utilities can stall transmission expansion because out-of-date laws sanction these companies' sweeping control over transmission development... One of the main values of connecting regional networks is that it enablesâ"and is in fact critical forâ"incorporating renewable energy... Plus, adding interregional transmission for renewables can significantly reduce costs for consumers. Such connections allow excess wind and solar power to flow to neighboring regions when weather conditions are favorable and allow the import of energy from elsewhere when renewables are less productive. Even without renewables, better integrated networks generally lower costs for consumers because they reduce the amount of generation capacity needed overall and decrease energy market prices. Interregional transmission also enhances reliability,particularly during extreme weather... Addressing the transmission shortage is on the agenda in Washington, but utility companies are lobbying against reforms. The article points out that now investors and entrepreneurs "are developing long-distance direct-current lines, which are more efficient at moving large amounts of energy over long distances, compared with AC," and also "sidestep the utility-dominated transmission-expansion planning processes." They're already in use in China, and are also becoming Europe's preferred choice... Read more of this story at Slashdot. (Comment on this)

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