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Variance Analysis

Process Overview

After the MISO Board approves an Eligible Project for inclusion in Appendix A of the MTEP, certain circumstances or events may significantly affect the cost, schedule, and or the ability of Selected Developers (SD) and Transmission Owners (TO) to complete and place into service the facilities comprising an Eligible Project for which they are responsible as specified in the MTEP. Under these circumstances or events, as described in the MISO Tariff, Attachment FF, Section IX, MISO may need to perform a Variance Analysis in order to further understand the reasons for such circumstances or events and to evaluate any potential impacts that they may have on the successful completion of the Project or on the Transmission System.

An overview of the MISO Variance Analysis process is illustrated below.