American Electric Power Q3 2026: EPS up 19% to $2.16 on a hot summer; $100B capex plan lifts outlook

American Electric Power's third-quarter 2026 diluted EPS rose 19% to $2.16 and revenue 13.7% to $6.83 billion, as new rates, data-center demand and a much hotter summer in its western states lifted sales, and a lower tax rate added a few cents more. AEP used the release to put a bigger number on the long term: a $100 billion five-year capital plan for 2027–2031 and a new 9–11% annual growth target for operating EPS, up from 7–9%. It now expects 2026 operating EPS at or above the top of its $6.25–$6.55 range.

The numbers

Operating margin here is operating income divided by revenue — the share of each sales dollar left after fuel, running costs, depreciation and non-income taxes, before interest and income tax. For a utility much of revenue is pass-through fuel and purchased power, so the margin moves with fuel prices as much as with efficiency.

Takeaway: The quarter's growth was real but about half borrowed from the weather and the tax line. What does not depend on the weather is the scale of what AEP now plans to build: $100 billion over five years, funded by a capital program that already outruns cash flow by $5.7 billion in nine months. The new 9–11% growth target only works if regulators let AEP earn close to its requested return on that spending, and this year they have been settling lower.

What drove the quarter

AEP reports four business segments. GAAP earnings by segment, in millions:

Vertically integrated utilities. Retail revenue rose $408 million. The 10-Q breaks that into $261 million from "base rate and rider revenues" — that is, price increases regulators approved (a rate case is the process in which a utility asks its state commission to raise prices to cover new investment and a set return on it; a rider is a separate surcharge for a specific cost) — plus $99 million from weather-driven residential use and $45 million from weather-adjusted growth "primarily in the commercial and industrial classes." Offsetting that, operation and maintenance costs rose $120 million (including $63 million for plant maintenance and nuclear, $30 million for storms) and depreciation rose $112 million on a larger asset base. A $22 million credit SWEPCo paid to certain existing wholesale customers (an $18 million hit to revenue in the segment) cut the other way; AEP excludes it from operating earnings.

Ohio and Texas wires. Rider revenue rose $141 million in Ohio and Texas and weather added $19 million, but much of the revenue gain is matched by pass-through costs: an $86 million rise in "recoverable PJM transmission expenses in Ohio" sits on the cost side. Interest expense here includes $10 million on cash deposits large Texas customers posted to queue for grid connections under ERCOT's Batch Zero process.

Transmission Holdco. Revenue rose $42 million "primarily due to continued transmission investment," and segment earnings rose $19 million. Transmission is AEP's most predictable earner: regulators at the federal level set a formula rate that pays a return on what has been built.

Generation & Marketing more than doubled, from $45 million to $96 million, on "higher market prices" in retail and trading and "higher realized prices" for its merchant plants. This is the one unregulated part of AEP, and power prices can fall as easily as they rose.

Below the operating line, interest expense rose $97 million (19%) to $606 million, "primarily due to higher long-term debt balances" — senior unsecured notes alone rose from $37.2 billion at the end of 2025 to $41.6 billion on September 30. That is the cost side of the investment program, and it grows every quarter AEP borrows ahead of rate recovery.

What the headline numbers hide

• Weather did much of the lifting. The 10-Q attributes $99 million (vertically integrated) plus $19 million (Ohio and Texas) of revenue to weather-related usage, against a pre-tax income increase of $200 million (to $1,318 million, +17.9%). Weather revenue is not all profit, but residential kilowatt-hours sold on hot days carry little extra cost beyond fuel, which is passed through. A normal summer in 2027 would take this back out.
• A lower tax rate added roughly 7 cents. Income tax expense fell to $125 million from $139 million even though pre-tax income rose. The effective rate dropped to 9.5% from 12.4%; at last year's rate the quarter's tax bill would have been about $39 million higher, or roughly $0.07 a share. The filing ties the change to more production tax credits at the corporate level, higher AFUDC-equity flow-through benefits and lower state taxes.
• AFUDC is non-cash income. The "allowance for equity funds used during construction" — a utility accounting credit that books a return on plants still being built — rose to $81 million from $59 million. It is allowed by regulators, but it is earnings that arrive as cash only once the plant enters rates.
• GAAP vs operating EPS. The 7-cent gap between GAAP basic EPS ($2.18) and operating EPS ($2.23) is two items AEP strips out: $22 million of SWEPCo wholesale-customer credits and a $14 million mark-to-market loss on commodity hedges, together $29 million after tax. Both are reasonable to exclude for a quarter, but the wholesale credits have now recurred all year ($45 million year to date), and year-to-date GAAP EPS also carries a $31 million Pirkey Plant disallowance and a $22 million Texas UTM disallowance — regulators declining to let AEP recover costs it had already spent. Those are excluded from operating EPS, but they are a recurring feature of how 2026 has gone.
• Cash conversion is fine; funding is the strain. Year-to-date operating cash flow of $5.77 billion is double net income of $2.87 billion, as usual for a utility with large depreciation. The issue is capital spending: $9.1 billion of construction plus $2.4 billion of plant acquisitions against $5.77 billion of operating cash and $1.56 billion of dividends. AEP borrowed a net $5.2 billion of long-term debt and holds forward contracts to sell about 48 million more shares (expected proceeds about $5.4 billion, settling December 2026 to July 2028). That is roughly 9% more shares than today's 546 million, so per-share growth from here has to outrun dilution. Its contractually defined debt-to-capital ratio was 56.0% against a 67.5% covenant ceiling.
• Share count is rising, not falling. Diluted shares were 2.3% higher than a year ago; there were no buybacks. EPS grew in spite of the share count, not because of it.
• Receivables absorbed more cash. Accounts receivable consumed $528 million of cash in nine months against $212 million a year ago, while revenue rose 10.5% year to date. With revenue up 13.7% in the quarter that is not alarming, but it is worth watching.

On balance the quarter is flattered: of the $200 million increase in pre-tax income, about $118 million of revenue came from a hotter summer, and a lower tax rate added roughly 7 cents of EPS; even if only part of that weather revenue was profit, underlying pre-tax growth from new rates and data-center sales sits somewhere between about 7% (all of it profit) and the 18% reported, not at the 19% EPS headline.

Did last time's read hold up?

Our Q2 2026 report said the raised 2026 guidance needed about $3.39 of operating EPS in the second half at the $6.40 midpoint, against $3.01 in the first half, and that it hinged on PSO's Oklahoma rate order and no new disallowance surprises. The third quarter alone delivered $2.23, which is why AEP now points to the top of the range (year-to-date operating EPS is $5.24, so Q4 needs about $1.31 to reach $6.55). The Oklahoma order did not arrive in Q3 as we flagged: a hearing was held and an order is now expected in the fourth quarter, with interim rates at a 9.375% return already being collected subject to refund. The Texas UTM calculation was completed in Q3 with no additional charge booked in the quarter. West Virginia's $2.7 billion securitization is still planned for Q4 2026. We also said the most likely path was the low end of a 7–9% long-term growth rate; AEP has instead raised the target to 9–11%, which raises the stakes on the rate cases rather than settling them.

Guidance and outlook

Management's guidance, from the earnings release:

• 2026: operating EPS "at or above the high end" of $6.25–$6.55 (estimated GAAP EPS $6.11–$6.41).
• 2027: operating EPS $6.75–$7.05. 2028: $7.40–$7.70.
• 2027–2031: operating EPS growth of 9–11% a year (previously 7–9% through 2030), and a compound rate above 10% through 2031 measured from the original 2026 midpoint of $6.30.
• Capital plan: $100 billion over 2027–2031 (the prior plan was $78 billion), including about $37 billion for transmission, $36 billion for generation and $22 billion for distribution, for rate base (the asset value regulators let AEP earn a return on) growth above 13% a year to $162 billion by 2031.
• Demand: 15 GW of new load commitments signed in the quarter, taking contracted incremental load to 84 GW by 2031. AEP counts only projects with fully executed service agreements or letters of agreement.

Our read. The demand is the strongest part of the case and it is now visible in billed kilowatt-hours: commercial sales up 15–18% is not a weather effect. The weaker part is the price AEP is allowed to charge for the capital it is raising. In 2026 the settlements have come in well under the asks — 9.375% in Oklahoma against 10.5% requested, 9.53% for SWEPCo in Texas against 10.75%, with only partial recovery of the retired Pirkey plant — and the Texas data-center queue that underpins 49 GW of AEP Texas letters of agreement is paused while the state audits Batch Zero loads. A 13% rate-base growth rate with about 9% more shares coming and rising interest costs can still produce 9–11% EPS growth, but only if allowed returns stop drifting down. The 2027 range implies about 3–8% growth from a 2026 result near $6.55, so the step-up to the new target is back-loaded.

What to watch

• PSO Oklahoma rate order (Q4 2026): whether the commission accepts the 9.375% settlement and how it treats the contested large-load tariff.
• SWEPCo Texas settlement order (Q4 2026): a 9.53% return and a $48 million increase, retroactive to March.
• ERCOT Batch Zero verification: ERCOT "will not authorize large loads to energize until verification is complete"; how long that takes affects when AEP Texas's contracted load turns into revenue.
• December 2026 forward share settlements (about 21 million shares) and the West Virginia securitization, both scheduled for Q4.
• Q4 2026 operating EPS of about $1.31 or more, the figure that confirms the top of the 2026 range.