for Reliability Report - Public Service Commission

The affected customer numbers in 2012 decreased to 16.65 million CM!from the 20.8
million CMI in 2011. This is a decrease of approximately 20.1% which is about the same
decrease of the average interruption number per customer. This particular number went
from 9.573 in 2011 to 7.614 in 2012.
The majority of the customer interruptions in 2012, roughly 65% of the total, occurred
during the months of May to September, inclusive, as shown in Fig. 4. Lightning, substation
& line equipment failures, human error and animals were the main contributors to higher
CMI during this period.
PEF SAlOl Trending (2008-2012)
Grid
• Retail
D Seminole
2008 2009 201 0 2011 2012
Y ear
Fig.1 PEF SAIDI Trending (2008-2012)
Grid KPis
Customers
(Thousands)
CMI (Millions)
SAID I
CAIDI
SAIFI
FSO *
2008 2009
454.08 551 .89
26.124 17.548
11 .9 8.101
57.53 31 .8
0.28 0.42
40 38
2010 201 1
499.04 337.592
20.222 20.803
9.336 9.573
44.29 68.116
0.2 0.16
66 46
2012
336.43
16.65
7.614
46.992
0.136
46
Table 2: PEF Statistics (2008-2012)
*Progress Energy proposes to transition to a FOHMY (Forced Outages per Hundred Miles
per Year) metric in lieu of FSOs because the FOHMY metric measures the number of
transmission line events, momentary AND sustained, that are incurred per hundred circuit
miles per year.
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