Interruption Cost Methodology and Results-A Canadian Commercial and Small Industry Survey

This paper presents the results of an investigation of the direct short term impacts and costs incurred by coxmercial and small industrial customers resulting fram local random supply interruptions. The study used a mail survey to determine the customer assessment of electric service interruptions. The variation in interruption cost with the characteristics of interruptions, such as duration, time of day, week of year, advanced warning and reliability history, and with the characteristics of the users was also investigated. A condensation of these results are included in the paper.