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eReliabiltly'facker.. <br /> • <br /> 2014 Annual Report <br /> Elk River Municipal Utilities <br /> The eReliability Tracker Annual Report was created by the American Public Power Association to assist <br /> utilities in their efforts to understand and analyze their electric system. This report focuses on distribution <br /> system reliability across the country and is customized to each utility's system. The data used to generate <br /> this report reflect activity in the eReliability Tracker from January 1, 2014 to December 31, 2014. Note that <br /> if you currently do not have a full year of data in the system, this analysis may not properly reflect your <br /> utility's statistics since it only includes data recorded for your utility as of February 24, 2015; therefore, any <br /> changes made after that date are not represented in this report. <br /> I. General Overview <br /> Reliability reflects historic and ongoing engineering investment decisions within a utility. Proper use of <br /> reliability metrics ensures that the utility is not only performing its intended function, but also is providing <br /> service in a consistent and effective manner. Even though the primary use of reliability statistics is for self- <br /> evaluation, utilities can use these statistics to compare with data from similar utilities. However, <br /> differences such as electrical network configuration, ambient environment, weather conditions, and <br /> number of customers served typically limit most utility-to-utility comparisons. Due to the diverse range of <br /> utilities that use the eReliability Tracker, this report endeavors to group utilities by size and region to <br /> improve comparative analyses while reducing differences. <br /> Since this report contains overall data for all utilities that use the eReliability Tracker, it is important to <br /> consider the effect that a particularly large or small utility can have on the rest of the data. To ease the <br /> issues associated with comparability, reliability statistics are calculated for each utility with their respective <br /> customer weight taken into account prior to being aggregated with other utilities. All utilities are equally <br /> weighted and all statistics are developed on a per customer basis. <br /> The aggregate statistics displayed in this report are calculated from utilities that experienced more than <br /> two outages in 2014. Also, utilities that experienced no outages this year, or did not upload any data, will <br /> have None/Null values in their report for their utility-specific data and were not included in the aggregate <br /> analysis. <br /> The aggregate statistics provided in the following sections of the report are based on approximately <br /> 17,606 outages from 143 utilities, that recorded more than two outages for 2014 during the time period of <br /> analysis. <br /> 52 <br />