ERCOT
The Electric Reliability Council of Texas (ERCOT) is the independent system operator that manages the flow of electric power to roughly 27 million Texas customers on the ERCOT Interconnection, running the wholesale Day-Ahead and Real-Time energy markets, ancillary services, congestion revenue rights, and retail switching for the competitive Texas market. Its home market is the United States (Texas). ERCOT sits at the wholesale/system-operator layer of the energy value chain, upstream of the transmission and distribution utilities (Oncor, CenterPoint, AEP Texas, TNMP) and the retail electric providers that serve end customers. Its API posture is a clean split: market and grid data are genuinely open — ERCOT publishes a real, versioned OpenAPI 3.0 for the Public Data API covering 106 EMIL data-product endpoints (locational marginal prices, settlement point prices, system load, wind and solar production, ancillary services, outage capacity), and the Market Information System still serves public report archives anonymously with no account at all. Consumer energy data is a different story: ERCOT operates no consumer usage API and implements no Green Button / ESPI surface. Texas residential interval data lives in Smart Meter Texas, which is operated by the joint Transmission and Distribution Utilities under PUCT oversight, not by ERCOT. The market-participant SOAP estate (ERCOT Web Services, MarkeTrak, Retail API) is documented publicly on GitHub but reachable only by certified market participants.
ERCOT is tracked in the API Evangelist network. This page is the human-readable profile that sits on top of the machine-readable index we maintain at apis.io.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
ERCOT is in the network as a tracked entity. We haven't yet indexed a public API surface for it — when one is published, the artifacts, score, and agent-readiness read will appear here automatically. The source repository is where that profile is built.
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