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On April 20, NIOs third brand, Firefly, was officially launched on April 19. This model mainly focuses on the small car market, with a launch price of 119,800 yuan, which is 29,000 yuan lower than the previously announced pre-sale price of 148,800 yuan. At the media meeting held on April 20, NIO Chairman and CEO Li Bin emphasized that the current price of Firefly still has a certain gross profit. In terms of sales, Li Bin said, "In the long run, Firefly is positioned as a high-end small car. We hope that it will account for almost 10% of the companys sales, but it is the latest brand to be born, and this will take some time."Britain said its fighter jets intercepted two Russian aircraft approaching NATO airspace over the Baltic Sea.On April 20, U.S. Vice President Vances office said that Vance and Pope Francis had a brief meeting in the Vatican on Easter Sunday morning. Vance stayed in the Vatican City for about 20 minutes. He will leave for India later on Sunday. The Vatican said that Vance "exchanged views" with church officials on a range of issues such as immigration, refugees and prisoners during his visit. Earlier this year, Pope Francis criticized the Trump administrations stance on immigration and forced deportation.Ukrainian President Zelensky: From midnight to noon today, Russian troops have launched 26 attacks.Ukrainian President Zelensky: Despite Ukraines announcement of a symmetrical truce against Russia, Russias artillery fire and use of drones increased from 10 a.m., with the use of FPV drones alone doubling.

The Texas Heat Wave Reveals Electricity Grid Congestion Issues

Charlie Brooks

May 18, 2022 10:14

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A plea over the weekend for Texans to limit their air conditioner and appliance use after six power plants went down reveals a weakness in the state's grid: transmission line congestion.


Since last year's February freeze, which caused more than 200 deaths amid widespread blackouts and power-price hikes that forced at least five power marketers into bankruptcy, power system reliability has been a concern. Electric Reliability Council of Texas (ERCOT), the state's grid operator, established obligatory reliability criteria for utilities to prevent future disruptions.


In contrast to natural gas shortages and frozen power plants, the weekend power alert had nothing to do with fuel availability. According to the state, six power plants producing 2,900 megawatts of energy "trip off," triggering the caution.


According to energy analysts, the consequent wholesale prices of almost $4,000 per megawatt hour in Houston and negative prices 150 miles (241 kilometers) distant demonstrated that power was unable to meet demand elsewhere.


According to Ramanan Krishnamoorti, chief energy officer at the University of Houston, pricing anomalies and negative prices may have resulted from transmission issues.


According to Joshua Rhodes, a research associate at the University of Texas at Austin Energy Institute and Webber Energy Group, the likelihood of many power plants being offline for their own unique reasons is vanishingly unlikely.


ERCOT declined to make an official request for comment on Monday, and a spokesman refused to identify the cause of the shutdown of six power facilities. The operator stated that it will have enough power for the state this summer.


Neal Dikeman, a partner at the investment firm Energy Transition Ventures and former director of a smart grid startup that supplies power flow management, predicts that congestion will continue to be a problem in Texas as the summer progresses.


"During the summer, there is often congestion due to people turning on their air conditioners, which causes the temperature limitations of the transmission lines to be reached."

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