aid: vistra-energy
url: https://raw.githubusercontent.com/api-evangelist/vistra-energy/refs/heads/main/apis.yml
name: Vistra Corp
kind: company
description: >-
  Vistra Corp (NYSE: VST) is an Irving, Texas integrated retail electricity and
  power generation company and the largest competitive power generator in the
  United States, operating roughly 41,000-44,000 MW of natural gas, nuclear,
  coal, solar and battery storage capacity alongside a retail business serving
  nearly 5 million residential, commercial and industrial customers across 16
  states and the District of Columbia through TXU Energy, Dynegy, Ambit Energy,
  Energy Harbor, Homefield Energy and U.S. Gas & Electric. Its home market is the
  United States, where it sits on both sides of the competitive value chain, a
  merchant generator selling into ERCOT, PJM, ISO-NE, NYISO, MISO and CAISO, and
  a retail electricity provider (REP) reselling that power to end customers. Its
  API posture is honestly none. No developer portal, no API subdomain and no
  machine-readable contract of any kind was found: developer., developers.,
  docs., api. and data. on vistracorp.com do not resolve; /developers, /api,
  /docs, /data, /openapi.json, /swagger.json and
  /.well-known/openid-configuration all return 404; and TXU Energy's 758-URL
  sitemap contains no developer or API page. The United States has no consumer
  energy data mandate. Green Button is an NAESB/NIST ESPI standard adopted
  voluntarily, and TXU Energy appears on the US Department of Energy's list of
  "Utilities Committed to Implementing Green Button", a 2012-era commitment list
  and not evidence of a live endpoint. The only customer-data surface found is
  Download-My-Data-style export behind the TXU Energy MyAccount login, whose
  interval readings are themselves sourced from Smart Meter Texas, the shared
  ERCOT meter-data platform operated by the transmission and distribution
  utilities (Oncor, CenterPoint, AEP Texas, TNMP) rather than by Vistra. Because
  Vistra is a retailer and generator and not a wires company, the third-party
  interval-data API in its home Texas market belongs to Smart Meter Texas and not
  to Vistra. Vistra likewise publishes no open market or grid data of its own;
  ERCOT, the other ISOs/RTOs and the EIA publish the market data about Vistra's
  fleet. Both sides are therefore closed at the company boundary. Not to be
  confused with Vistra Limited (vistra.com), the unrelated corporate-services and
  fund-administration firm that does run a real API developer portal at
  devportal.vistra.com.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
  - Energy
  - United States
  - Utilities
  - Electricity
  - Natural Gas
  - Power Generation
  - Retail Energy
  - Smart Metering
  - Green Button
  - Energy Markets
  - Nuclear
  - Solar
  - Battery Storage
  - Texas
  - ERCOT
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
apis: []
common:
  - type: DomainSecurity
    url: security/vistra-energy-domain-security.yml
  - type: Conformance
    name: Standards checked against Vistra Corp, all not found
    url: conformance/vistra-energy-conformance.yml
  - type: LLMsTxt
    name: Generated by API Evangelist, not published by Vistra
    url: llms/vistra-energy-llms.txt
  - type: DiscoveryProbe
    name: Well-known and discovery paths probed, zero documents found
    url: well-known/vistra-energy-well-known.yml
  - type: Website
    url: https://www.vistracorp.com/
  - type: About
    url: https://vistracorp.com/about/
  - type: Retail
    url: https://vistracorp.com/retail/
  - type: Sustainability
    url: https://vistracorp.com/sustainability/
  - type: InvestorRelations
    url: https://investor.vistracorp.com/
  - type: Blog
    url: https://vistracorp.com/blog/
  - type: BlogRSS
    url: https://vistracorp.com/feed/
  - type: PrivacyPolicy
    url: https://vistracorp.com/privacy-policy/
  - type: TermsOfService
    url: https://vistracorp.com/terms-of-use/
  - type: CodeOfConduct
    url: https://vistracorp.com/code-of-conduct/
  - type: CorporateGovernance
    url: https://vistracorp.com/corporate-governance/
  - type: Reporting
    name: Sustainability reporting
    url: https://vistracorp.com/sustainability/reporting/
  - type: Careers
    url: https://vistracorp.com/careers/
  - type: LinkedIn
    url: https://www.linkedin.com/company/vistra-energy
  - type: LegislativeHub
    url: https://hub.vistracorp.com/our-companies/
  - type: RetailBrand
    name: TXU Energy
    url: https://www.txu.com/
  - type: RetailBrand
    name: Dynegy
    url: https://www.dynegy.com/
  - type: RetailBrand
    name: Ambit Energy
    url: https://www.ambitenergy.com/
  - type: RetailBrand
    name: Homefield Energy
    url: https://www.homefieldenergy.com/
  - type: RetailBrand
    name: TriEagle Energy
    url: https://www.trieagleenergy.com/
  - type: CustomerPortal
    name: TXU Energy MyAccount
    url: https://services.txu.com/
  - type: HelpCenter
    name: TXU Energy Help Center, retail customer support and not a developer channel
    url: https://www.txu.com/help
  - type: Documentation
    name: TXU Energy MyEnergy Dashboard usage help
    url: https://www.txu.com/help/manage-usage/my-energy-dashboard
  - type: Documentation
    name: TXU Energy Smart Meters usage help
    url: https://www.txu.com/help/manage-usage/smart-meters
  - type: Standard
    name: Green Button, US DOE commitment list naming TXU Energy
    url: https://www.energy.gov/data/green-button
  - type: ThirdPartyDataPlatform
    name: Smart Meter Texas, ERCOT meter data operated by the TDUs and not by Vistra
    url: https://smartmetertexas.com/
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com