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[Table of Contents](#i9e3d7fad53bb42b083be8286e4319cd4_10) Evergy Missouri West Other Proceedings  In December 2018, the Office of the Public Counsel (OPC) and the Midwest Energy Consumers Group (MECG) filed a petition with the MPSC requesting an AAO that would require Evergy Missouri West to record a regulatory liability for all revenues collected from customers for return on investment, non-fuel operations and maintenance costs, taxes including accumulated deferred income taxes, and all other costs associated with Sibley Station following the station’s retirement in November 2018. In October 2019, the MPSC granted OPC's and MECG's request for an AAO and required Evergy Missouri West to record a regulatory liability for the revenues discussed above for consideration in Evergy Missouri West's current rate case. Depending on the MPSC's decision in the current rate case, Evergy Missouri West could be required to refund to customers all or a portion of amounts collected in revenue for Sibley Station since December 2018 or, alternatively, could be required to make no refunds. As part of its current rate case, Evergy Missouri West is proposing to refund to customers the revenues collected from customers for non-fuel operations and maintenance costs and other costs associated with Sibley Station following the station's retirement but not the return on investment.As a result of the MPSC order, Evergy has recorded a regulatory liability of $29.3 million as of December 31, 2021 for the estimated amount of revenues that Evergy Missouri West has collected from customers for Sibley Station since December 2018 that Evergy has determined is probable of refund. Evergy expects that it will continue to defer such amounts as collected from customers until new rates become effective in Evergy Missouri West's current rate case.The accrual for this estimated amount does not include certain revenues collected related to Sibley Station that Evergy has determined to not be probable of refund in the current rate case based on the relevant facts and circumstances. Although Evergy has determined these additional revenues to not be probable of refund, the ultimate resolution of this matter in Evergy Missouri West's current rate case is uncertain and could result in an estimated loss of approximately $50 million when new rates are expected to become effective in December 2022. Evergy's regulatory liability for probable refunds as of December 31, 2021 and estimated loss in excess of the amount accrued represent estimates that could change significantly based on ongoing developments including decisions in other regulatory proceedings that establish precedent applicable to this matter and positions of parties on this issue in Evergy Missouri West's 2022 rate case.Evergy Metro and Evergy Missouri West February 2021 Winter Weather Event AAOIn June 2021, Evergy Metro and Evergy Missouri West filed a joint request for an AAO with the MPSC that would allow Evergy Metro and Evergy Missouri West to defer to a regulatory asset or regulatory liability any extraordinary costs or revenues, including carrying costs, to provide electric service during the February 2021 winter weather event for consideration in future proceedings.Evergy Metro and Evergy Missouri West have currently deferred substantially all of their fuel and purchased power costs, net of wholesale revenues, related to the February 2021 winter weather event to a regulatory asset or liability pursuant to their ability to recover or refund these amounts through their fuel recovery mechanisms, which allow for the recovery or refund of 95% of increases in fuel and purchased power costs, net of wholesale revenues, above the amount included in base rates to customers. This AAO request is intended to address the recovery or refund of the February 2021 winter weather event amounts separate from the normal fuel recovery mechanism process given the extraordinary nature of the February 2021 winter weather event and to help moderate customer bill impacts. As of December 31, 2021, Evergy Metro's Missouri jurisdiction had recognized a regulatory liability of $25.6 million related to its increased wholesale revenues during the February 2021 winter weather event. As of December 31, 2021, Evergy Missouri West had recognized a regulatory asset of $281.6 million related to its costs incurred during the February 2021 winter weather event, primarily consisting of increased fuel and purchased power costs.In the AAO filing, Evergy Metro requested to refund its deferred February 2021 winter weather event amounts to customers through its fuel recovery mechanism over one year, beginning in April 2022. In the same AAO filing, Evergy Missouri West requested to exclude its deferred February 2021 winter weather event amounts from recovery through its fuel recovery mechanism and indicated its intent to recover them through issuing securitized bonds 103
