Events behind 2003 blackout 'less likely' to recur, but challenges remain, officials say

摘要

The reliability of the power grid has improved in many ways since the blackout that hit the Northeast in August 2003, but more changes and vigorous vigilance are needed as the industry tackles infrastructure siting challenges and strives to do more with less, government and industry officials said last week.rnWith declining generation reserve margins in many parts of the country, rising demand for electricity and difficulty building generation and transmission facilities, the grid is operated at or near its limits more often than before, North American Electric Reliability Corp. officials said.rnBut "we know where those limits are," and NERC has a stronger hand than it used to in enforcing its now-mandatory standards, said NERC Senior Vice President David Nevius.