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v3.23.1

Property, Plant and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2022
Property, Plant and Equipment |
December 31, 2022 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo |
|  | (in millions) |
|  | (as adjusted) |
Regulated Property, Plant and Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 23,759.7 |  | (a) | $ | — |  |  | $ | — |  |  | $ | 6,776.8 |  |  | $ | 5,534.6 |  |  | $ | — |  |  | $ | 2,394.8 |  |  | $ | 5,476.2 |  | (a)
Transmission |  | 33,221.7 |  |  | 6,301.5 |  |  | 12,335.4 |  |  | 4,482.8 |  |  | 1,842.2 |  |  | 3,198.6 |  |  | 1,164.4 |  |  | 2,479.8 |  |
Distribution |  | 27,138.8 |  |  | 5,312.8 |  |  | — |  |  | 4,933.0 |  |  | 3,024.7 |  |  | 6,450.3 |  |  | 3,216.4 |  |  | 2,659.6 |  |
Other |  | 5,528.9 |  |  | 1,020.4 |  |  | 476.6 |  |  | 849.2 |  |  | 796.1 |  |  | 1,040.6 |  |  | 466.0 |  |  | 582.6 |  |
CWIP |  | 4,776.4 |  | (a) | 805.2 |  |  | 1,554.7 |  |  | 705.3 |  |  | 253.0 |  |  | 474.3 |  |  | 219.3 |  |  | 369.5 |  | (a)
Less: Accumulated Depreciation |  | 23,118.0 |  |  | 1,759.5 |  |  | 1,027.1 |  |  | 5,397.3 |  |  | 4,117.8 |  |  | 2,564.3 |  |  | 1,839.4 |  |  | 3,314.8 |  |
Total Regulated Property, Plant and Equipment - Net |  | 71,307.5 |  |  | 11,680.4 |  |  | 13,339.6 |  |  | 12,349.8 |  |  | 7,332.8 |  |  | 8,599.5 |  |  | 5,621.5 |  |  | 8,252.9 |  |
Nonregulated Property, Plant and Equipment - Net |  | 2,031.6 |  |  | 1.2 |  |  | 0.3 |  |  | 29.4 |  |  | 78.7 |  |  | 9.8 |  |  | 5.0 |  |  | 9.3 |  |
Total Property, Plant and Equipment - Net |  | $ | 73,339.1 |  |  | $ | 11,681.6 |  |  | $ | 13,339.9 |  |  | $ | 12,379.2 |  |  | $ | 7,411.5 |  |  | $ | 8,609.3 |  |  | $ | 5,626.5 |  |  | $ | 8,262.2 |  |
December 31, 2021 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo |
|  | (in millions) |
|  | (as adjusted) |
Regulated Property, Plant and Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 22,428.3 |  | (a) | $ | — |  |  | $ | — |  |  | $ | 6,683.9 |  |  | $ | 5,531.8 |  |  | $ | — |  |  | $ | 1,802.4 |  |  | $ | 4,734.5 |  | (a)
Transmission |  | 30,771.1 |  |  | 5,849.9 |  |  | 11,031.0 |  |  | 4,322.4 |  |  | 1,783.1 |  |  | 2,992.8 |  |  | 1,107.7 |  |  | 2,316.9 |  |
Distribution |  | 25,457.4 |  |  | 4,917.2 |  |  | — |  |  | 4,683.3 |  |  | 2,800.1 |  |  | 6,070.6 |  |  | 3,004.9 |  |  | 2,514.3 |  |
Other |  | 5,403.5 |  |  | 958.7 |  |  | 451.7 |  |  | 668.9 |  |  | 755.1 |  |  | 982.2 |  |  | 433.5 |  |  | 542.0 |  |
CWIP |  | 3,734.8 |  | (a) | 551.3 |  |  | 1,402.2 |  |  | 469.9 |  |  | 302.8 |  |  | 365.0 |  |  | 156.0 |  |  | 240.7 |  | (a)
Less: Accumulated Depreciation |  | 21,491.1 |  |  | 1,642.9 |  |  | 784.0 |  |  | 5,047.4 |  |  | 3,885.3 |  |  | 2,457.4 |  |  | 1,707.0 |  |  | 3,002.2 |  |
Total Regulated Property, Plant and Equipment - Net |  | 66,304.0 |  |  | 10,634.2 |  |  | 12,100.9 |  |  | 11,781.0 |  |  | 7,287.6 |  |  | 7,953.2 |  |  | 4,797.5 |  |  | 7,346.2 |  |
Nonregulated Property, Plant and Equipment - Net |  | 2,000.1 |  |  | 1.2 |  |  | 0.1 |  |  | 23.3 |  |  | 23.3 |  |  | 9.8 |  |  | 5.3 |  |  | 53.9 |  |
Total Property, Plant and Equipment - Net |  | $ | 68,304.1 |  |  | $ | 10,635.4 |  |  | $ | 12,101.0 |  |  | $ | 11,804.3 |  |  | $ | 7,310.9 |  |  | $ | 7,963.0 |  |  | $ | 4,802.8 |  |  | $ | 7,400.1 |  |
(a)AEP and SWEPCo’s regulated generation and regulated CWIP include amounts related to SWEPCo’s Arkansas jurisdictional share of the Turk Plant.
Depreciation, Depletion and Amortization - Regulated |
AEP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges
|  |  |  |  |  | (in years) |  |  |  |  |  | (in years) |  |  |  |  |  | (in years)
Generation |  | 2.7% | - | 7.6% |  | 20 | - | 132 |  | 2.7% | - | 7.8% |  | 20 | - | 132 |  | 2.7% | - | 6.3% |  | 20 | - | 132
Transmission |  | 2.0% | - | 2.7% |  | 24 | - | 75 |  | 2.0% | - | 2.6% |  | 15 | - | 75 |  | 2.0% | - | 2.6% |  | 15 | - | 75
Distribution |  | 2.7% | - | 3.6% |  | 7 | - | 78 |  | 2.8% | - | 3.6% |  | 7 | - | 80 |  | 2.7% | - | 3.7% |  | 7 | - | 78
Other |  | 3.1% | - | 14.4% |  | 5 | - | 75 |  | 3.0% | - | 12.5% |  | 5 | - | 75 |  | 2.8% | - | 11.3% |  | 5 | - | 75
AEP Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Transmission |  | 2.2% |  | 50 | - | 75 |  | 2.2% |  | 50 | - | 75 |  | 2.0% |  | 50 | - | 75
Distribution |  | 2.9% |  | 7 | - | 70 |  | 2.9% |  | 7 | - | 70 |  | 3.1% |  | 7 | - | 70
Other |  | 6.2% |  | 5 | - | 50 |  | 5.8% |  | 5 | - | 50 |  | 6.1% |  | 5 | - | 50
AEPTCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Transmission |  | 2.6% |  | 24 | - | 75 |  | 2.5% |  | 24 | - | 75 |  | 2.4% |  | 24 | - | 75
Other |  | 6.6% |  | 5 | - | 56 |  | 6.7% |  | 5 | - | 56 |  | 6.3% |  | 5 | - | 64
APCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 3.6% |  | 35 | - | 118 |  | 3.6% |  | 35 | - | 118 |  | 3.3% |  | 35 | - | 118
Transmission |  | 2.2% |  | 24 | - | 75 |  | 2.1% |  | 15 | - | 75 |  | 2.2% |  | 15 | - | 75
Distribution |  | 3.6% |  | 12 | - | 57 |  | 3.5% |  | 12 | - | 57 |  | 3.7% |  | 12 | - | 57
Other |  | 7.3% |  | 5 | - | 55 |  | 8.5% |  | 5 | - | 55 |  | 7.8% |  | 5 | - | 55
I&M |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 4.9% |  | 20 | - | 132 |  | 4.7% |  | 20 | - | 132 |  | 4.6% |  | 20 | - | 132
Transmission |  | 2.5% |  | 44 | - | 67 |  | 2.4% |  | 45 | - | 70 |  | 2.3% |  | 45 | - | 70
Distribution |  | 3.1% |  | 14 | - | 71 |  | 3.4% |  | 14 | - | 71 |  | 3.4% |  | 14 | - | 71
Other |  | 10.1% |  | 5 | - | 45 |  | 9.0% |  | 5 | - | 51 |  | 10.2% |  | 5 | - | 51
OPCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Transmission |  | 2.3% |  | 39 | - | 60 |  | 2.3% |  | 39 | - | 60 |  | 2.3% |  | 39 | - | 60
Distribution |  | 2.7% |  | 11 | - | 70 |  | 2.9% |  | 11 | - | 70 |  | 3.1% |  | 14 | - | 65
Other |  | 6.1% |  | 5 | - | 50 |  | 6.1% |  | 5 | - | 50 |  | 5.0% |  | 5 | - | 50
PSO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 3.1% |  | 30 | - | 75 |  | 2.8% |  | 30 | - | 75 |  | 3.1% |  | 35 | - | 75
Transmission |  | 2.5% |  | 42 | - | 75 |  | 2.4% |  | 42 | - | 75 |  | 2.2% |  | 45 | - | 75
Distribution |  | 2.9% |  | 15 | - | 78 |  | 2.9% |  | 15 | - | 78 |  | 2.9% |  | 15 | - | 78
Other |  | 6.8% |  | 5 | - | 56 |  | 6.1% |  | 5 | - | 56 |  | 5.7% |  | 5 | - | 64
SWEPCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2022 |  | 2021 |  | 2020
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 2.7% |  | 30 | - | 65 |  | 2.7% |  | 30 | - | 65 |  | 2.7% |  | 35 | - | 65
Transmission |  | 2.3% |  | 44 | - | 70 |  | 2.4% |  | 49 | - | 74 |  | 2.3% |  | 47 | - | 73
Distribution |  | 2.9% |  | 15 | - | 75 |  | 2.8% |  | 15 | - | 80 |  | 2.7% |  | 15 | - | 67
Other |  | 9.0% |  | 5 | - | 57 |  | 8.6% |  | 5 | - | 58 |  | 8.5% |  | 5 | - | 52
Depreciation, Depletion and Amortization - Unregulated |
|  | 2022 |  | 2021 |  | 2020 |
Functional Class of Property |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |
|  |  |  |  |  | (in years) |  |  |  |  |  | (in years) |  |  |  |  |  | (in years) |
Generation |  | 3.8% | - | 8.7% |  | 3 | - | 61 |  | 3.8% | - | 10.4% |  | 10 | - | 59 |  | 3.6% | - | 4.0% |  | 15 | - | 59 |
Transmission |  | 2.8% |  | 10 | - | 62 |  | 2.6% |  | 30 | - | 40 |  | 2.5% |  | 30 | - | 40 |
Distribution |  | NA |  | NA |  | NA |  | NA |  | NA |  | NA |
Other |  | 25.2% |  | 5 | - | 35 | (a) | 16.5% |  | 5 | - | 35 | (a) | 16.1% |  | 5 | - | 50 |
(a)In 2020 management announced plans to retire the Pirkey Plant in 2023 and the related depreciable lives have been adjusted accordingly. See Note 5 - Effects of Regulation for additional information. NA Not applicable.
Allowance For Equity Funds Used During Construction |
|  | Years Ended December 31,
Company |  | 2022 |  | 2021 |  | 2020
|  | (in millions)
AEP |  | $ | 133.7 |  |  | $ | 139.7 |  |  | $ | 148.1 |
AEP Texas |  | 19.7 |  |  | 21.5 |  |  | 19.4 |
AEPTCo |  | 70.7 |  |  | 67.2 |  |  | 74.0 |
APCo |  | 11.7 |  |  | 15.6 |  |  | 14.6 |
I&M |  | 9.8 |  |  | 12.8 |  |  | 11.5 |
OPCo |  | 13.9 |  |  | 10.8 |  |  | 12.5 |
PSO |  | 1.5 |  |  | 2.4 |  |  | 4.0 |
SWEPCo |  | 4.9 |  |  | 7.0 |  |  | 7.7 |
Allowance For Borrowed Funds Used During Construction |
|  | Years Ended December 31,
Company |  | 2022 |  | 2021 |  | 2020
|  | (in millions)
AEP |  | $ | 63.0 |  |  | $ | 53.8 |  |  | $ | 66.0 |
AEP Texas |  | 11.5 |  |  | 10.5 |  |  | 12.5 |
AEPTCo |  | 22.4 |  |  | 21.0 |  |  | 25.5 |
APCo |  | 6.5 |  |  | 7.5 |  |  | 7.9 |
I&M |  | 5.7 |  |  | 5.1 |  |  | 5.7 |
OPCo |  | 6.7 |  |  | 4.7 |  |  | 6.2 |
PSO |  | 2.7 |  |  | 0.7 |  |  | 2.0 |
SWEPCo |  | 4.3 |  |  | 3.0 |  |  | 3.9 |
Jointly-owned Electric Facilities |
|  |  |  |  | Registrant’s Share as of December 31, 2022
| Fuel Type |  | Percent of Ownership |  | Utility Plant in Service |  | Construction Work in Progress |  | Accumulated Depreciation
|  |  |  |  | (in millions)
AEP |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 382.9 |  |  | $ | 16.4 |  |  | $ | 149.4 |
Pirkey Plant, Unit 1 (a) | Lignite |  | 85.9 | % |  | 632.0 |  |  | — |  |  | 632.0 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,611.1 |  |  | 5.1 |  |  | 314.7 |
Total |  |  |  |  | $ | 2,626.0 |  |  | $ | 21.5 |  |  | $ | 1,096.1 |
I&M |  |  |  |  |  |  |  |  |
Rockport Generating Plant (b)(c)(d) | Coal |  | 50.0 | % |  | $ | 1,357.4 |  |  | $ | 9.2 |  |  | $ | 905.1 |
PSO |  |  |  |  |  |  |  |  |
North Central Wind Energy Facilities (e)(f) | Wind |  | 45.5 | % |  | $ | 889.3 |  |  | $ | 9.1 |  |  | $ | 28.1 |
SWEPCo |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 382.9 |  |  | $ | 16.4 |  |  | $ | 149.4 |
Pirkey Plant, Unit 1 (a) | Lignite |  | 85.9 | % |  | 632.0 |  |  | — |  |  | 632.0 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,611.1 |  |  | 5.1 |  |  | 314.7 |
North Central Wind Energy Facilities (e)(f) | Wind |  | 54.5 | % |  | 1,066.8 |  |  | 10.1 |  |  | 35.2 |
Total |  |  |  |  | $ | 3,692.8 |  |  | $ | 31.6 |  |  | $ | 1,131.3 |
|  |  |  |  | Registrant’s Share as of December 31, 2021
| Fuel Type |  | Percent of Ownership |  | Utility Plant in Service |  | Construction Work in Progress |  | Accumulated Depreciation
|  |  |  |  | (in millions)
AEP |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 377.6 |  |  | $ | 6.3 |  |  | $ | 133.5 |
Pirkey Plant, Unit 1 (a) | Lignite |  | 85.9 | % |  | 613.8 |  |  | — |  |  | 528.3 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,598.0 |  |  | 10.2 |  |  | 285.6 |
Total |  |  |  |  | $ | 2,589.4 |  |  | $ | 16.5 |  |  | $ | 947.4 |
I&M |  |  |  |  |  |  |  |  |
Rockport Generating Plant (b)(c)(d) | Coal |  | 50.0 | % |  | $ | 1,247.2 |  |  | $ | 13.9 |  |  | $ | 794.5 |
PSO |  |  |  |  |  |  |  |  |
North Central Wind Energy Facilities (e)(f) | Wind |  | 45.5 | % |  | $ | 313.7 |  |  | $ | — |  |  | $ | 4.2 |
SWEPCo |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 377.6 |  |  | $ | 6.3 |  |  | $ | 133.5 |
Pirkey Plant, Unit 1 (a) | Lignite |  | 85.9 | % |  | 613.8 |  |  | — |  |  | 528.3 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,598.0 |  |  | 10.2 |  |  | 285.6 |
North Central Wind Energy Facilities (e)(f) | Wind |  | 54.5 | % |  | 376.2 |  |  | — |  |  | 5.4 |
Total |  |  |  |  | $ | 2,965.6 |  |  | $ | 16.5 |  |  | $ | 952.8 |
(a)Operated by SWEPCo. (b)Operated by I&M. (c)Amounts include I&M's 50% ownership of both Unit 1 and capital additions for Unit 2. Unit 2 was subject to a finance lease with a nonaffiliated company. In December 2022, the lease expired at which point I&M and AEGCo acquired 100% of the interests in Unit 2. See the "Rockport Plant Litigation" section of Note 6 for additional information. (d)AEGCo owns 50%. (e)PSO and SWEPCo own undivided interests of 45.5% and 54.5% of the NCWF, respectively. Sundance was placed into service in April 2021. Maverick was placed into service in September 2021. Traverse was placed into service in March 2022. See the “Acquisitions” section of Note 7 for additional information. (f)Operated by PSO.

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