XML 75 R46.htm IDEA: XBRL DOCUMENT v3.22.4
RATE MATTERS AND REGULATION (Tables)
12 Months Ended
Dec. 31, 2022
Regulated Operations [Abstract]  
Schedule of Regulatory Assets
The Evergy Companies' regulatory assets and liabilities are detailed in the following tables.
December 31
20222021
EvergyEvergy Kansas CentralEvergy MetroEvergyEvergy Kansas CentralEvergy Metro
Regulatory Assets(millions)
Pension and post-retirement costs$137.3 $54.9 $— $567.2 $265.6 $213.3 
Debt reacquisition costs87.7 80.9 6.0 94.4 86.7 6.7 
Debt fair value adjustment92.1 — — 96.5 — — 
Asset retirement obligations fair value
   adjustment
119.4 — — 117.9 — — 
Depreciation159.1 47.2 57.1 98.5 50.1 27.0 
Cost of removal346.8 158.2 140.6 257.5 141.0 90.2 
Asset retirement obligations127.5 54.5 53.4 119.3 52.3 49.1 
Analog meter unrecovered investment12.6 12.6 — 18.4 18.4 — 
Treasury yield hedges19.2 19.2 — 20.4 20.4 — 
Iatan No. 1 and common facilities6.2 — 2.6 6.5 — 2.7 
Iatan No. 2 construction accounting costs24.0 — 12.0 24.7 — 12.4 
Property taxes51.4 33.0 15.8 39.6 31.6 8.0 
Disallowed plant costs13.9 13.9 — 14.2 14.2 — 
La Cygne environmental costs10.0 7.9 2.1 11.2 9.0 2.2 
Deferred customer programs14.3 6.5 6.7 18.7 6.4 7.8 
Fuel recovery mechanisms188.5 — 13.5 202.5 120.8 19.8 
February 2021 winter weather event430.9 121.9 — 403.1 121.5 — 
Solar rebates15.6 — — 20.2 — — 
Transmission delivery charge1.5 — 1.5 — — — 
Wolf Creek outage22.8 11.4 11.4 20.4 10.2 10.2 
Pension and other post-retirement benefit
   non-service costs
75.3 24.8 30.7 65.6 23.0 29.6 
Retired generation facilities146.3 — — 123.4 — — 
Merger transition costs28.1 13.3 10.5 32.7 15.6 12.1 
Other regulatory assets83.8 51.7 9.9 42.3 24.1 5.9 
Total2,214.3 711.9 373.8 2,415.2 1,010.9 497.0 
Less: current portion(368.0)(121.9)(42.3)(424.1)(257.3)(86.3)
Total noncurrent regulatory assets$1,846.3 $590.0 $331.5 $1,991.1 $753.6 $410.7 
Schedule of Regulatory Liabilities
December 31
20222021
EvergyEvergy Kansas CentralEvergy MetroEvergyEvergy Kansas CentralEvergy Metro
Regulatory Liabilities(millions)
Taxes refundable through future rates$1,866.6 $1,084.2 $586.6 $1,969.5 $1,143.7 $616.1 
Deferred regulatory gain from sale
leaseback
37.1 37.1 — 42.6 42.6 — 
Emission allowances38.2 — 38.2 42.1 — 42.1 
Nuclear decommissioning246.3 103.4 142.9 400.1 175.7 224.4 
Pension and post-retirement costs98.4 23.0 72.5 44.4 23.2 15.9 
Jurisdictional allowance for funds used
during construction
25.9 24.2 1.7 27.5 25.8 1.7 
La Cygne leasehold dismantling costs29.6 29.6 — 29.6 29.6 — 
Kansas tax credits23.5 23.5 — 16.7 16.7 — 
Purchase power agreement4.1 4.1 — 5.8 5.8 — 
Fuel recovery mechanisms4.7 4.5 0.2 6.5 — 6.5 
February 2021 winter weather event37.8 — 37.8 65.1 — 65.1 
Sibley AAO108.0 — — 29.3 — — 
TFR refunds55.5 55.5 — — — — 
Other regulatory liabilities146.5 51.9 48.2 96.5 19.1 37.0 
Total2,722.2 1,441.0 928.1 2,775.7 1,482.2 1,008.8 
Less: current portion(155.4)(72.1)(55.3)(70.7)(12.8)(54.6)
Total noncurrent regulatory liabilities$2,566.8 $1,368.9 $872.8 $2,705.0 $1,469.4 $954.2