CMS Energy

Consumers Energy Green Button Connect My Data API

The Consumers Energy Green Button Connect My Data API exposes customer-authorized electric and natural-gas usage data to registered third parties using the NAESB ESPI / Green Button standard. Authorization uses OAuth 2.0 with single sign-on or test-account scopes; data is delivered as Green Button XML or JSON via UtilityAPI's standardized endpoints (Meters, Bills, Intervals, Billing Summaries). Third parties register with Consumers Energy, are issued a client_id, and start in sandbox mode before being approved for live data.

GitHub

Documentation

📖
Documentation
https://utilityapi.com/docs/utilities/consumersenergy

Other Resources

🔗
Portal
https://utilityapi.com/
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/cms-energy/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/consumers-green-button-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: cms-energy:consumers-green-button-api
name: Consumers Energy Green Button Connect My Data API
tags:
- Energy Usage
- Green Button
- Authentication
- Smart Meter
- Utility
tags_raw:
- Energy Usage
- Green Button
- OAuth2
- Smart Meter
- Utility
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://utilityapi.com/docs/utilities/consumersenergy
properties:
- url: https://utilityapi.com/docs/utilities/consumersenergy
  type: Documentation
- url: https://utilityapi.com/
  type: Portal
description: The Consumers Energy Green Button Connect My Data API exposes customer-authorized electric
  and natural-gas usage data to registered third parties using the NAESB ESPI / Green Button standard.
  Authorization uses OAuth 2.0 with single sign-on or test-account scopes; data is delivered as Green
  Button XML or JSON via UtilityAPI's standardized endpoints (Meters, Bills, Intervals, Billing Summaries).
  Third parties register with Consumers Energy, are issued a client_id, and start in sandbox mode before
  being approved for live data.
x-features:
- name: Green Button Standard
  description: NAESB ESPI / Green Button XML for usage point and interval data.
- name: Meters Endpoint
  description: Retrieve individual meter information for an authorized customer.
- name: Bills Endpoint
  description: Retrieve bill history and charges.
- name: Intervals Endpoint
  description: Retrieve granular interval-usage time series.
- name: Billing Summaries
  description: Retrieve account-level summary data.
- name: OAuth 2.0
  description: Customer authorization via OAuth 2.0 with SSO or test scopes.
- name: Sandbox Test Accounts
  description: Built-in test residential and commercial scenarios for development.
x-useCases:
- name: Energy Efficiency
  description: Pull usage data into energy efficiency and benchmarking apps.
- name: Demand Response
  description: Power demand-response and load-management programs.
- name: Solar and EV
  description: Inform solar sizing and EV-charging optimization with real usage.
- name: Sustainability Reporting
  description: Aggregate usage into Scope 2 emissions and ESG reporting.
baseURL: https://utilityapi.com/api/v2