Tracking the Reliability of the U.S. Electric Power System: An Assessment of Publicly Available Information Reported to State Public Utility Commissions

TitleTracking the Reliability of the U.S. Electric Power System: An Assessment of Publicly Available Information Reported to State Public Utility Commissions
Publication TypeReport
LBNL Report NumberLBNL-1092E
Year of Publication2008
AuthorsEto, Joseph H., and Kristina Hamachi LaCommare
Pagination52
Date Published10/2008
PublisherLBNL
CityBerkeley
Keywordsconsortium for electric reliability technology solutions (certs), electricity reliability trends, power interruptions, transmission planning
Abstract

Large blackouts, such as the August 14-15, 2003 blackout in the northeastern United States and Canada, focus attention on the importance of reliable electric service. As public and private efforts are undertaken to improve reliability and prevent power interruptions, it is appropriate to assess their effectiveness. Measures of reliability, such as the frequency and duration of power interruptions, have been reported by electric utilities to state public utility commissions for many years. This study examines current state and utility practices for collecting and reporting electricity reliability information and discusses challenges that arise in assessing reliability because of differences among these practices. The study is based primarily on reliability information for 2006 reported by 123 utilities to 37 state public utility commissions.

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