AMERICAN ELECTRIC POWER CO INC (AEP) stock intrinsic value fair value estimate & owner earnings analysis

American Electric Power (AEP) is a regulated electric utility. It owns power plants, high-voltage transmission lines and local distribution networks serving customers in 11 states, including Texas, Ohio, Oklahoma, Virginia, Indiana, Michigan, Kentucky, Louisiana, Arkansas, Tennessee and West Virginia. Regulators let it earn a return on the plant it builds, so the business is worth roughly the return on the plant it already has, less what it owes. HOW WE MEASURED IT We start from cash generated, not accounting earnings. Operating cash flow was $6.94 billion in 2025. We remove working-capital and fuel-cost recovery swings (a $474 million net inflow in 2025, but a $1.65 billion under-recovery in 2021), subtract stock compensation (about $53 million), and subtract the spending needed just to keep existing plant earning what it earns today. AEP spent $8.5 billion on construction in 2025, but most of that expands the plant and is financed with new debt and new shares. Counting all of it as upkeep would make a profitable utility look cash-negative, so we treat upkeep as depreciation plus nuclear fuel purchases ($3.5 billion in 2025) and treat the rest as growth, credited only where it is already paid for (see the base case). This is a judgement call and it drives the result. On that basis owner earnings were $2.91 billion in 2025 ($5.41 per share), $2.53 billion in 2024 ($4.77) and $1.56 billion in 2023 ($2.99, the weakest of the three). Because lenders are paid first, we add back the interest AEP paid ($1.89 billion in 2025) to get business cash flow before lenders: $3.23 billion in 2023, $4.37 billion in 2024 and $4.80 billion in 2025. Our starting level is the median of those three years, $4.37 billion. We use only 2023 onward because AEP sold its contracted renewables portfolio in 2023, so earlier years describe a different business. Business cash flow grew 9.8% in 2025 (owner earnings grew 14.7%). The base case assumes 9.8% for 2026, which only returns cash flow to the 2025 level already earned. Operating cash flow in the first quarter of 2026 ($1.52 billion versus $1.45 billion a year earlier) is consistent with that, but one quarter is not enough to move our starting level. BASE CASE: about $80.82 per share Business cash flow is $4.80 billion in 2026. From 2027 we add about $0.39 billion a year, because plant added in 2025 and early 2026 earned only part of a year in 2025. Net plant rose from $82.4 billion to $92.4 billion during 2025, and AEP paid $3.45 billion for generation facilities in 2025 and a further $0.97 billion in the first quarter of 2026. We assume that plant earns what AEP's in-service plant earned in 2025, about 6.0% (roughly $4.8 billion on about $80 billion of average net plant excluding construction in progress). We also credit the $8.3 billion of construction in progress at March 2026 entering service evenly between 2027 and 2030, assuming it costs another $8.3 billion to finish, at the same return. We then hold the result flat with no further growth: upkeep is already deducted, and the regulated franchise continues to earn on the plant it has. The business is worth $93.3 billion ($170.64 per share). It owes $49.1 billion ($89.82 per share). The difference is $44.2 billion, or $80.82 per share. BEAR CASE: about $49.66 per share The risks are visible in the filings and recent results. In 2026 regulators partially disallowed costs for the Pirkey plant, a cost-recovery tracker and a West Virginia order; management put these at about $0.17 of 2026 earnings per share, roughly $93 million a year. Ohio approved a distribution rate decrease, and Virginia's base rate request was its smallest in about 30 years, which points to affordability pressure. In this case business cash flow stays at our $4.37 billion starting level less the disallowances ($4.28 billion a year), with no credit for the 2025 step-up, and unfinished projects earn a return on only 85% of their cost. The business is worth $76.3 billion ($139.47 per share), owes $49.1 billion ($89.82 per share), leaving $27.2 billion, or $49.66 per share. Because AEP is heavily borrowed, a shortfall of about $0.9 billion a year in cash flow removes about $31 per share. Even here cash flow is more than twice the roughly $1.9 billion of interest paid in 2025. BULL CASE: about $81.87 per share The company's own levers go right: rate recovery on plant already built starts in 2026 instead of 2027, and the unfinished projects enter service between 2027 and 2029 instead of 2027 and 2030. The business is worth $93.9 billion ($171.69 per share), owes $49.1 billion ($89.82 per share), leaving $44.8 billion, or $81.87 per share. The bull barely exceeds the base because we credit nothing we cannot show is secured. Left out on purpose: the $78 billion 2026-2030 capital plan, the 69 gigawatts of contracted new load and management's 7% to 9% growth target. New investment must be financed with new debt and shares, and it earns about 6.0%, roughly the return we discount at, so it adds little beyond its own cost, and targets are not secured growth. Guidance was used only as a cross-check, never to set the level. DEBT At March 31, 2026 AEP had $51.1 billion of borrowings: $49.55 billion of long-term debt (including $2.7 billion due within a year) and $1.56 billion of short-term debt. The $47.3 billion of long-term debt at year-end carried a weighted average rate of 4.57% (senior notes 4.45%, junior subordinated notes 5.83%), below the 6% yardstick, so we reduced the debt by $4.8 billion, the present value over ten years of that interest saving, to $46.3 billion. We also subtracted $2.8 billion for the outside investor's 19.9% share of the Midwest transmission holding company, sold in June 2025 for about $2.78 billion, because AEP's cash flow is counted in full. Cash of $0.3 billion was treated as needed to run the business. Values are per 547 million diluted shares (first quarter of 2026). AEP is expected to keep refinancing its maturities as it has for years, and we found no evidence in the data we could reach that it cannot. WHAT WOULD MAKE THIS WRONG The result is very sensitive to the return regulators allow on the plant. Each one-tenth of a percentage point on roughly $87 billion of in-service plant is about $87 million a year, or about $2.65 per share. We estimated March 2026 plant from year-end plant plus first-quarter spending, and the cost to finish the unfinished projects is our assumption, since we did not have a project-by-project schedule. Depreciation-level upkeep could understate the true cost of replacing aging plant, which would lower our values. WHAT CHANGED SINCE OUR LAST ESTIMATE Our previous estimate (about $116 for the base case) valued a per-share earnings figure, assumed continued growth and did not deduct AEP's roughly $51 billion of borrowings separately. This update values the cash the business actually produces before lenders, credits only assets already built, bought or under construction, and subtracts debt and the outside investor's stake explicitly. That change in method, not new bad news, is the main reason the estimate is lower. The news since then is mixed: management raised 2026 guidance and added contracted load, while regulators disallowed some costs and cut Ohio distribution rates. The margin-of-safety price sits well below the bear case, given the heavy borrowing and dependence on regulators.