CONDENSED CONSOLIDATED BALANCE SHEETS - AEP Transmission Holdco - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Accounts Receivable:
Customers	$ 1,338	$ 1,166
Miscellaneous	53	60
Total Accounts Receivable	2,970	2,867
Prepayments and Other Current Assets	385	212
TOTAL CURRENT ASSETS	6,623	6,052
TRANSMISSION PROPERTY
Transmission Property	43,093	42,557
Other Property, Plant and Equipment	9,119	8,635
Construction Work in Progress	8,314	7,635
Total Property, Plant and Equipment	123,307	120,579
Accumulated Depreciation and Amortization	28,453	28,205
TOTAL PROPERTY, PLANT AND EQUIPMENT – NET	94,854	92,374
OTHER NONCURRENT ASSETS
Regulatory Assets	5,070	4,804
Deferred Charges and Other Noncurrent Assets	4,578	4,402
TOTAL OTHER NONCURRENT ASSETS	16,299	16,034
TOTAL ASSETS	117,776	114,460
CURRENT LIABILITIES
Accounts Payable	3,148	3,429
Long-term Debt Due Within One Year	2,704	3,194
Accrued Taxes	1,888	2,002
Accrued Interest	629	544
Obligations Under Operating Leases	95	100
Other Current Liabilities	1,924	1,898
TOTAL CURRENT LIABILITIES	12,594	13,314
NONCURRENT LIABILITIES
Long-term Debt	46,850	44,128
Deferred Income Taxes	11,249	10,951
Regulatory Liabilities	8,230	8,362
Obligations Under Operating Leases	572	578
Deferred Credits and Other Noncurrent Liabilities	1,235	905
TOTAL NONCURRENT LIABILITIES	72,153	68,890
TOTAL LIABILITIES	84,747	82,204
Rate Matters (Note 4)
Commitments, Guarantees and Contingencies (Note 5)
MEMBER’S EQUITY
Retained Earnings	15,795	15,441
TOTAL LIABILITIES AND EQUITY	117,776	114,460
AEP TRANSMISSION COMPANY, LLC
CURRENT ASSETS
Advances to Affiliates	372	71
Accounts Receivable:
Customers	76	94
Affiliated Companies	178	153
Miscellaneous	1	0
Total Accounts Receivable	255	247
Prepayments and Other Current Assets	8	4
TOTAL CURRENT ASSETS	635	322
TRANSMISSION PROPERTY
Transmission Property	16,885	16,542
Other Property, Plant and Equipment	579	571
Construction Work in Progress	1,991	2,005
Total Property, Plant and Equipment	19,455	19,118
Accumulated Depreciation and Amortization	2,000	1,915
TOTAL PROPERTY, PLANT AND EQUIPMENT – NET	17,455	17,203
OTHER NONCURRENT ASSETS
Regulatory Assets	78	73
Deferred Property Taxes	280	326
Deferred Charges and Other Noncurrent Assets	83	75
TOTAL OTHER NONCURRENT ASSETS	441	474
TOTAL ASSETS	18,531	17,999
CURRENT LIABILITIES
Advances from Affiliates	2	143
Long-term Debt Due Within One Year	425	425
Accrued Taxes	579	650
Accrued Interest	72	46
Contribution in Aid of Construction Advances	134	32
Obligations Under Operating Leases	1	1
Other Current Liabilities	14	9
TOTAL CURRENT LIABILITIES	1,900	1,947
NONCURRENT LIABILITIES
Long-term Debt	6,188	6,174
Deferred Income Taxes	1,508	1,481
Regulatory Liabilities	737	708
Obligations Under Operating Leases	1	2
Deferred Credits and Other Noncurrent Liabilities	48	44
TOTAL NONCURRENT LIABILITIES	8,482	8,409
TOTAL LIABILITIES	10,382	10,356
Rate Matters (Note 4)
Commitments, Guarantees and Contingencies (Note 5)
MEMBER’S EQUITY
Paid-in Capital	5,195	4,962
Retained Earnings	1,834	1,651
TOTAL MEMBER’S EQUITY	7,029	6,613
Noncontrolling Interest	1,120	1,030
TOTAL EQUITY	8,149	7,643
TOTAL LIABILITIES AND EQUITY	18,531	17,999
AEP TRANSMISSION COMPANY, LLC | Nonrelated Party
CURRENT LIABILITIES
Accounts Payable	416	477
AEP TRANSMISSION COMPANY, LLC | Affiliated Entity
CURRENT LIABILITIES
Accounts Payable	$ 257	$ 164