openapi: 3.1.0
info:
  title: Aeo EIA Open Data API V2 API
  description: The U.S. Energy Information Administration (EIA) Open Data API v2 is a fully RESTful implementation of EIA's public energy statistics. Routes are arranged in a logical hierarchy across petroleum, natural gas, coal, electricity, nuclear, renewables, total energy, international, and consumption series.
  version: '2.0'
servers:
- url: https://api.eia.gov/v2
  description: EIA Open Data API v2
security:
- apiKeyQuery: []
tags:
- name: EIA Open Data API V2
paths:
  /:
    get:
      summary: API root
      description: Returns metadata about the available top-level routes.
      operationId: getRoot
      parameters:
      - $ref: '#/components/parameters/ApiKey'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RouteResponse'
      tags:
      - EIA Open Data API V2
components:
  schemas:
    RouteResponse:
      type: object
      additionalProperties: true
      properties:
        response:
          type: object
          additionalProperties: true
        request:
          type: object
          additionalProperties: true
        apiVersion:
          type: string
  parameters:
    ApiKey:
      name: api_key
      in: query
      required: true
      schema:
        type: string
      description: EIA Open Data API key.
  securitySchemes:
    apiKeyQuery:
      type: apiKey
      in: query
      name: api_key
x-generated-from: https://www.eia.gov/opendata/documentation.php
x-generated-by: claude-crawl-2026-05-08