# American Electric Power

> American Electric Power (AEP) is one of the largest electric utilities in the United States,
> delivering electricity to more than 5.6 million customers across 11 states through regulated
> subsidiaries including AEP Ohio, AEP Texas, Appalachian Power, Indiana Michigan Power,
> Kentucky Power, Public Service Company of Oklahoma and Southwestern Electric Power Company.
> AEP operates the nation's largest electricity transmission network — over 40,000 miles — and
> roughly 31,000 megawatts of generating capacity.

<!--
generated: 2026-09-02
method: generated
source: apis.yml + live probes of aep.com, developer.aep.com and api.aep.com (2026-09-02)
note: AEP does not publish an llms.txt. https://www.aep.com/llms.txt returns 404. This file is
      written by API Evangelist from the catalog record and from probes we ran ourselves; it is
      NOT a document American Electric Power serves.
-->

## API surface

AEP operates a real API program, but it is not publicly readable.

- [AEP API Management developer portal](https://developer.aep.com/): Azure API Management
  developer portal, branded "AEP API Management" and footed "Powered by AEP Integration COE".
  Backing instance `apim-aep-prod-use2-001` (confirmed at https://developer.aep.com/config.json).
- [APIs list](https://developer.aep.com/apis): the catalog page. The anonymous data call behind
  it, `GET /developer/apis?api-version=2022-04-01-preview`, returns `{"value":[],"nextLink":null}`
  — zero APIs are visible without a portal account.
- [Products list](https://developer.aep.com/products): likewise returns an empty product set
  anonymously, so no plan, quota or price is published.
- [Sign up](https://developer.aep.com/signup) / [Sign in](https://developer.aep.com/signin):
  a developer-portal account is required before any API, operation or specification is shown.
- API gateway host: `https://api.aep.com` — a live Azure API Management gateway (APIM
  `x-ms-request-id` headers behind an F5 WAF). Unauthenticated requests return
  `{ "statusCode": 404, "message": "Resource not found" }`. No route is anonymously reachable.

## What is NOT published

- No OpenAPI, Swagger, GraphQL SDL, AsyncAPI, gRPC/Protobuf or WSDL contract at any public URL.
- No MCP server (hosted or stdio) and no A2A agent card.
- No `/.well-known/` documents on any AEP host: security.txt, api-catalog, openid-configuration,
  oauth-authorization-server, ai-plugin.json, agent-card.json and agent.json all 404 on
  www.aep.com, developer.aep.com, api.aep.com and the operating-company sites.
- No first-party SDK, CLI or client library in npm, PyPI, Maven Central, NuGet, RubyGems,
  crates.io or pkg.go.dev.
- No published rate limits, API changelog, status page, deprecation policy or vulnerability
  disclosure program.

## Customer data access

Customer-authorized energy-usage data at AEP operating companies is shared through Green Button
Connect My Data (the NAESB ESPI profile) rather than through a first-party developer API. That
surface is customer-consent and portal driven; AEP publishes no ESPI contract of its own.

## Company

- [AEP.com](https://www.aep.com/)
- [About AEP](https://www.aep.com/about/)
- [News](https://www.aep.com/news/)
- [Investors](https://www.aep.com/investors/)
- [Contact](https://www.aep.com/contact/)
- [Terms & Conditions](https://www.aep.com/terms/)
- [Privacy Notice](https://www.aep.com/privacy/)
- [LinkedIn](https://www.linkedin.com/company/american-electric-power)