PUC Annual Report–Fiscal Year 2004-05 - Public Utilities Commission

Public Utilities Commission Annual Report 2004-05State of Hawaii Page 78The normalized and unnormalized reliability results for 1999 to 2004 are shown below inthe “HELCO Table of Annual Service Reliability Indices.”HELCO Table of Annual Service Reliability Indices1999 2000 2001 2002 2003 2004Number of Customers 60,585 61,796 63,207 64,660 66,034 70,124Normalized:*Customer Interruptions 88,461 95,604 278,507 195,614 213,873 163,745Customer Hours Interrupted 76,532 68,562 137,659 154,064 154,064 150,905ASA (Percent) 99.986 99.988 99.976 99.973 99.962 99.976SAIF (Occurrence) 1.432 1.513 4.307 2.962 3.151 2.335CAID (Minutes) 51.91 43.03 29.66 47.26 63.24 55.30Not Normalized:Customer Interruptions 88,461 281,818 278,507 339,184 289,027 417,462Customer Hours Interrupted 76,532 250,115 137,659 238,789 251,280 388,891ASA (Percent) 99.986 99.955 99.976 99.959 99.958 99.937SAIF (Occurrence) 1.432 4.459 4.307 5.137 4.258 5.953CAID (Minutes) 51.91 53.25 29.66 42.24 52.16 55.89*Note: Data normalized to account for “abnormal situations.4. KIUC 2004 SERVICE QUALITY – UNNORMALIZED RESULTS.The KIUC electric utility service quality report was based on or excerpted directly from theMonthly Interruption Summary Report submitted to the Commission. The report covers the 2004calendar year. A complete copy is available for review at the Commission’s office and will bemade available on the Commission’s website.The average number of electric customers increased 2.75%, from 32,069 in 2003 to32,950 in 2004. The 2004 system peak demand of 76.750 mWs was recorded on the evening ofDecember 30, 2004. The 2004 system peak demand increased by 3.77 mWs or 5.17% over2003’s peak of 72.980 mWs, set during the evening of October 23, 2003.KIUC has not normalized any of its data for the period 2000 through 2004. The reliabilityindices are calculated using the data from all system interruptions except scheduled interruptionsfor maintenance.Graphs of the ASA (Figure 53), SAIF (Figure 54), CAID (Figure 55), and SAID (Figure 56)for the five (5) years are included below.The ASA index of 99.9648% in 2004 is 0.0024% lower than 2003’s, 99.9672% and is thelowest in five (5) years.The SAIF index of 6.98 occurrences in 2004 has declined by 9.70% from 7.73occurrences, in 2003.The CAID index of 26.26 minutes in 2004 is the highest in five (5)-years, and 17.08%higher than 2003’s CAID, 22.43 minutes.The SAID index of 184.92 minutes is the highest in five (5) years, and 6.63% higher than2003’s SAID, 173.42 minutes.