SERC Reliability Corp. named MISO the winner of its President’s Award, citing its management of a record summer load, compliance with CIP standards and resolution of seams issues.

Nearly two years after joining MISO — and despite a seams spat between the RTO and SPP — Entergy said it is realizing expected cost savings.

Southern Co. and three Missouri utilities told FERC that MISO has billed them more than $21 million in excessive transmission rates since Entergy joined the RTO in December 2013.