A class = c22> a class = C23> A class = C24> + ... "/> 10 years after the blackout, the U.S. grid faces new threats - 9NEWS.com | english
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! Fark it - style = "c21"> A class = "c22"> A class = "C23"> A class = "C24"> + The U.S. electrical grid better management and more flexible whole earth provisions a decade after his greatest eclipse but remains vulnerable to more extreme weather, cyber threats and tensions caused by shifts in where and how power is produced
. Many worried the grid is not fully prepared for the new and emerging challenges, even if an analysis for The Associated Press shows maintenance expenditure has steadily increased since North America's whole earth provisions largest blackout.
"This work of reliability is kind of impossible, in the sense that there are only so many things that can happen that it is difficult to be sure that you have all the bases," said William Booth, a senior advisor electricity the U.S. Energy Information Administration
. The industry has mostly talked about the failures whole earth provisions blamed on a branch in New York to a power line and offset outages that cascade across eight states and parts of Canada on the afternoon of August 14, 2003, blackout computer screens, halting commuter trains, and cut off lights and air conditioners for 50 million people. Grid operators did not realize what happened whole earth provisions now an almost real-time view of the system and are better equipped to stop problems of growth. Utilities share more information and systematically trim trees near high-voltage power lines.
Electricity customers to the grid a little breathing room. Power demand unchanged or even decreased in recent years as lighting, appliances, homes and businesses have gotten more efficient and economic growth is slow. All that reduces stress on the grid
. At the same time, aging coal and nuclear power plants shutting down in the face of higher maintenance costs, pollution limits and competition from cheap natural gas. Renewable generation such as wind turbines and solar panels installed, and adds power that is difficult to plan and manage
. temperatures and more extreme storms, according to federal data, and it increases stress on the grid by creating spikes in demand or knocked out lines or power plants. Some regulators and policy makers are increasingly concerned about cyberattacks that can target systems that manage power plants and grids.
"The timetable whole earth provisions that exists today is not designed for what everyone wants to do with it," said Joe Welch, CEO of ITC Holdings Corp., whole earth provisions the largest independent transmission company in the U.S.
The electric power industry has directly respond to the issues that led to the blackout. An analysis of spending on maintenance and transmission equipment by more than 200 utilities nationwide for the AP by Ventyx, a software and data services firm that works with electric utilities, show that spending rose sharply in the years after the blackout .
Maintenance whole earth provisions expenditure for overhead lines an average of 8.2 percent per year from 2003 to 2012. In the period before the eclipse between 1994 and 2003, spending 3 percent on average whole earth provisions per year.
Spending on transmission whole earth provisions equipment has also increased. From 2003 to 2012, utilities spent an average of $ 21.514 per year on equipment and station equipment per mile of transmission line. From 1994 to 2003, spending an average of $ 7,185 per year.
The number of kilometers of transmission whole earth provisions line has remained whole earth provisions more or less the same, indicating new money is mostly spent on equipment for the existing system stronger and more responsive, by Ventyx analyst Chris Tornow
. Those higher transmission costs trickled down to customer accounts, but they were largely offset by lower prices for electricity, thanks to cheap natural gas. Since 2003, the average residential power prices rose an average of 0.85 percent a year, adjusted for inflation, according to the Energy Information Administration.
The grid's reliability whole earth provisions is high, according to a report from the North American Electric Reliability Corporation, which set
