Weather Normalization of Yearly Reliability Targets

One of the major factors that drive the variableness in utility reliability metrics is weather. Since this is the case, internal utility reliability metric targets are then also sensitive to both the number and severity of inclement weather throughout the year. Most utilities would like to see a time series trend of reliability without the influence of large fluctuations due to weather. This paper outlines a simple technique used by KCP&L adjusts internal reliability targets for the number of storms included in the measured metrics.