Recall from previous Industry Updates that in 2013 (Decision 2013-135), the Alberta Utilities Commission found that the AESO’s Transmission Constraint Management (TCM) rule is not infrequent or of a short duration, nor is the price impact minimal.” Moreover, the Commission determined that the rule is technically deficient and not in the public interest due to the “significant and unnecessary” costs of congestion management borne by the customer. Consequently, the AESO was ordered to change the current TCM rule according to guidelines set out in the decision.*
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