Direct Answer
American Electric Power reports revenue across 4 product and service lines in its fiscal 2025 Form 10-K. Electricity is the largest, with $12.6 billion of revenue (57% of the total), followed by Transmission and Distribution Utilities Revenues at $6.1 billion (28%).
How Does American Electric Power Make Money?
No single line supplies a majority of revenue: the largest, Electricity, is 57%, which spreads American Electric Power's exposure across several demand drivers. Between fiscal 2024 and 2025, Generation and Marketing Revenues grew fastest (+38.7%) and Transmission and Distribution Utilities Revenues slowest (+3.7%), so the revenue mix tilts toward Generation and Marketing Revenues while that gap lasts.
| Product or service | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Electricity | $12.6 billion | $11.4 billion | 57.4% | 10.0% |
| Transmission and Distribution Utilities Revenues | $6.1 billion | $5.9 billion | 27.9% | 3.7% |
| Generation and Marketing Revenues | $2.7 billion | $1.9 billion | 12.3% | 38.7% |
| Product and Service Other | $526 million | $482 million | 2.4% | 9.1% |
What the Segment Figures Do Not Show
The rows above add up to 100% of American Electric Power's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.
Where These Numbers Come From
Every figure on this page is a value American Electric Power reported in the segment note and revenue disclosures of its Form 10-K filed February 12, 2026 (accession 0000004904-26-000013), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.
Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.
Frequently Asked Questions
What are American Electric Power's main products and services?
In its fiscal 2025 Form 10-K, American Electric Power reports revenue for Electricity, Transmission and Distribution Utilities Revenues, Generation and Marketing Revenues and Product and Service Other.
Which part of American Electric Power brings in the most revenue?
Electricity, with $12.6 billion of revenue in fiscal 2025, or 57% of the total.
Where does American Electric Power report its segment results?
In the segment note to the financial statements in its Form 10-K, most recently filed February 12, 2026, alongside management's discussion of each segment's results.