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Utility Reliability Indices


PNM :: El Paso Electric :: Southwest Public Service Company

 

Public Service Company of New Mexico (PNM) Reliability Indices
 
DEFINITIONS PER IEEE STD. 1366-2003
SAIFI = System Average Interruption Frequence Index = how often the average customer experiences a sustained outage over a predefined period of time.
SAIDI = System Average Interruption Duration Index = the total duration of interruption for the average customer during a predefined period of time.
CAIDI = Customer Average Interruption Duration Index = the average time required to restore service.
ASAI = Average System Availability Index = the fraction of time that a customer has received power during the defined reporting period.
DATA BASED ON IEEE 1366 STANDARDS
Year SAIFI SAIDI CAIDI ASAI Comments
index minutes minutes %
2012 0.62 73.96 118.72 99.9860  
2011 0.82 82.72 101.21 99.9974  
2010 0.81 82.63 102.08 99.9974  
2009 0.81 65.40 81.15 99.9979  
2008 0.70 68.16 97.73 99.9979  
2007 0.73 58.11 79.86 99.9982  
2006 0.74 69.31 93.66 99.9978  
2005 0.49 35.92 73.35 99.9989  

 


El Paso Electric Company (New Mexico service territory) Reliability Indices
 
DEFINITIONS PER IEEE STD. 1366-2003
SAIFI = System Average Interruption Frequence Index = how often the average customer experiences a sustained outage over a predefined period of time.
SAIDI = System Average Interruption Duration Index = the total duration of interruption for the average customer during a predefined period of time.
CAIDI = Customer Average Interruption Duration Index = the average time required to restore service.
ASAI = Average System Availability Index = the fraction of time that a customer has received power during the defined reporting period.
DATA BASED ON IEEE 1366 STANDARDS
Year SAIFI SAIDI CAIDI ASAI Comments
index minutes minutes %
2012 0.91 76.66 84.49 99.9854  
2011 1.12 67.71 60.27 99.9871  
2010 0.90 63.19 70.37 99.9980  
2009 1.21 97.27 80.20 99.9815  
2008 0.92 103.63 112.54 99.9803  
2007 0.71 56.86 79.81 99.9892  
2006 0.63 41.27 65.01 99.9922  
2005 0.96 48.41 50.27 99.9908  

 


Southwest Public Service Company (Xcel energy) Reliability Indices
 
DEFINITIONS PER IEEE STD. 1366-2003
SAIFI = System Average Interruption Frequence Index = how often the average customer experiences a sustained outage over a predefined period of time.
SAIDI = System Average Interruption Duration Index = the total duration of interruption for the average customer during a predefined period of time.
CAIDI = Customer Average Interruption Duration Index = the average time required to restore service.
ASAI = Average System Availability Index = the fraction of time that a customer has received power during the defined reporting period.
DATA BASED ON IEEE 1366 STANDARDS
Year SAIFI SAIDI CAIDI ASAI Comments
index minutes minutes %
2012 0.93 73.77 79.20 99.9861  
2011 0.99 77.17 77.65 99.9855  
2010 1.06 77.74 73.60 99.9851  
2009 0.59 44.41 75.08 99.9916  
2008 0.81 49.96 61.56 99.9906  
2007 0.63 38.06 59.96 99.9928  
2006 0.58 33.16 57.15 99.9937  
2005 0.52 31.35 60.58 99.9940  




 
 
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