insurancenewsのブログ

Save money and things with our tips and tricks

デューク・エナジーは、問題の完全な嵐で計画停電を非難する

Duke Energy's management said on Tuesday that an extreme cold spell that exceeded forecast demand was spreading, crippling factory equipment and making it impossible to buy power elsewhere due to a rolling blackout on Christmas Eve. condemned.


Approximately 500,000 customers, or 11%, of Duke Energy Carolina and Duke Energy Progress subsidiaries were subject to planned temporary outages, often with little notice, to respond to state power regulators Then the company executives apologized. Power was restored before sunset on December 24, but morning temperatures dropped to single digits and afternoon highs were below freezing in many areas.


Duke Energy Carolina CEO Julie Janson said at a briefing for the North Carolina Public Utilities Commission, "I want to express how sorry I am for what our customers have experienced." It's our responsibility, and we've set out on a path that allows us to see a different outcome and deliver a better customer experience when faced with similar challenges."


As a freak winter storm approached the East Coast, the power outage occurred the day after 300,000 customers lost power as sharply lower temperatures and high winds collapsed lines. Restoration was nearly complete by the evening of that day. At the time, his two subsidiaries of the Charlotte-based utility still expected to have enough energy production reserves to meet peak demand the next morning, said Sam Hall, vice president of transmission systems. Mann said.


However, power generation at three North Carolina plants (coal-fired Mayo and Roxboro, and natural gas-powered Dan River) was essentially frozen early on December 24, when the insulated instrumentation lines froze. It was cut in half, a Duke executive said. On the other hand, neighboring power companies did not have a supply to share, so no power purchases were made for power already contracted in the local transmission system.


Faced with the threat of uncontrollable demand outstripping supply, leading to a major blackout in the eastern United States, Holman said the two subsidiaries began "load shedding" events (planned outages) just after 6 a.m. said.


"We will work to reduce the likelihood that this type of event will occur again, but if similar situations occur in similar operational environments in the future, our operators will take the same actions," he said.


A phased outage is automated and is expected to last only 15-30 minutes. However, the automation tool did not work as expected, and the utility's distribution control center was forced to manually shut down hundreds of circuits, according to the presentation. All lines were restored around 4pm.


Duke management said communicating the event to customers was insufficient. Especially since planned outages made it clear he would exceed 30 or 60 minutes.


Kendall Bowman, president of Duke Energy North Carolina, said:https://muragon.com/
The seven-member commission, elected by Democratic Gov. Roy Cooper, asked many questions and asked for more information, but largely avoided holding anyone accountable for what happened. The Federal Energy Regulatory Commission is also investigating what happened.


After publicly voicing concerns about the suspension last week, Cooper met with Duke Energy CEO Lynn Goode and other company executives on Tuesday, according to a news release from the governor's office. covered similar topics.


Cooper "expects Duke to continue to be informed of the steps they are taking to ensure this does not happen again," the release said.


The state's public utility commissioner, Floyd McKissick, said Duke's customer notification system should be upgraded as soon as possible to prepare for those who may be affected by a power outage, such as the elderly and those in need of medical care. I said yes.


"The only thing customers want to know is that the power is there when they need it," he said.


McKissick also cited modeling utility power demand. Duke executives acknowledged that this was based on data from past weather events that did not account for the unique confluence of last month's conditions. What Holman called his December temperature the lowest since his 1980s, low dew point temperatures, chills, all included a holiday weekend.


This briefing is another initiative by the Commission detailing the actions Duke Energy should take to meet its new legislative mandate to reduce its carbon footprint by 70% by 2030 compared to 2005 levels. It took place just four days after issuing the order.


The rolling blackout came when a massive freeze in the eastern United States caused blackouts, prompting the state to save power until Christmas morning by leading the power transmission business in the region of which North Carolina is a member. has occurred. The Tennessee Valley Authority has also directed local power companies to implement rolling blackouts.