Survey Questions - Edison Electric Institute
Survey Questions - Edison Electric Institute
Survey Questions - Edison Electric Institute
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Chapter 2: Storms and Outages<br />
9. Physical attack that could potentially impact electric power system adequacy or reliability; or<br />
vandalism which targets components of any security system<br />
10. Cyber event that could potentially impact electric power system adequacy or reliability<br />
11. Loss of electric service to more than 50,000 customers for 1 hour or more<br />
12. Fuel supply emergencies that could impact electric power system adequacy or reliability<br />
The data collected from Form OE-417 is compiled by DOE’s statistical agency, Energy Information<br />
Administration (EIA), to create publicly available information about electrical system outages. In this paper,<br />
EEI has reviewed and compiled available data for 2003 to 2011 to identify the impact and trends of major<br />
weather related outages during that nine-year period, and will discuss how the data has changed since the<br />
release of the 2009 Out of Sight, Out of Mind report. As noted in 2009, the current report does not include all<br />
system outages in the U.S., but only weather-related events that meet the OE-417 reporting requirement.<br />
The following six figures provide information on the annual number of events, 2 the number of customers<br />
impacted, and the number of hours of annual outage.<br />
Figure 2.2, EIA Data: Storm Events, exhibits the number of major weather events for each year. The outlier<br />
years for storm events are 2003 and 2011. All the other years fall within one standard deviation of ±27.3<br />
events; this is an increase from the ±23 events shown in the 2009 report. The annual average of 70 events<br />
per year for all years increased from 57 events in the 2009 report. The data also shows an increased trend for<br />
more storms over the nine-year period.<br />
Storm Events<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
10 <strong>Edison</strong> <strong>Electric</strong> <strong>Institute</strong><br />
Figure 2.2 EIA Data: Storm Events<br />
2003 2004 2005 2006 2007 2008 2009 2010 2011<br />
Years<br />
Standard Deviation Range Designated<br />
2 A single storm can count for more than one event if it impacts more than one utility. For example, Hurricane Ike (2008)<br />
resulted in nine utilities reporting outages to EIA; therefore, Hurricane Ike would account for nine events that year.
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