Following a decision of the Federal Energy Regulatory Commission (FERC) released last week that cuts transmission owners’ return on equity (ROE) by more than 200 basis points,[1] ratepayers in the Midcontinent Independent System Operator, Inc. (MISO) footprint will save an estimated $200 million per year.
Spurred by industrial customers’ challenge to MISO’s ROE rate in 2013, FERC ultimately found in its September 28, 2016 order that MISO’s ROE of 12.38% – which had been in place since 2002 – was unjust and unreasonable, and reset it to a base rate of 10.32%.[2] Transmission owners may also qualify for transmission incentive ROE adders, although the maximum ROE rate may not exceed 11.35%.[3] FERC also ordered that refunds be issued on a prospective basis for the period from November 12, 2013 through February 11, 2015.[4]
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