Simply Energy

Simply Energy is the former brand of the Australian electricity and gas retailer that now trades as ENGIE, operated by IPower Pty Ltd (ACN 111 267 228) and IPower 2 Pty Ltd (ABN 24 070 374 293) trading as ENGIE (ABN 67 269 241 237), together with Simply Energy Solutions Pty Ltd. The business carried the Simply Energy name for seventeen years before rebranding to ENGIE in April 2024, and supplies more than 700,000 residential and business accounts across Victoria, South Australia, New South Wales, Queensland and Western Australia. It sits on the retail tier of the National Electricity Market value chain, buying wholesale energy and billing end customers, rather than in generation, transmission or distribution. Its API posture is entirely a product of statutory mandate, and in this case the mandate is genuinely implemented rather than merely claimed. The company is a designated Consumer Data Right energy data holder (data holder provider number DH002028) and is listed on the live CDR Register under the ENGIE brand. Its unauthenticated CDR Generic Plans endpoint, hosted for it by the Australian Energy Regulator's Energy Made Easy service, returns 2,452 real ENGIE tariff plans conforming to the Consumer Data Standards energy schemas, and its own registered public base URI serves the Consumer Data Standards discovery endpoints with correct x-v version negotiation. Everything else is closed. Customer usage, billing, service point and DER data are available only to ACCC accredited data recipients with explicit consumer consent, there is no developer portal, no self-serve API keys, no published OpenID Connect discovery document, and no open grid, market or system data of any kind.

Simply Energy publishes 9 APIs on the APIs.io network, including Data Holder Customers API, Data Holder Operations API, Distributed Energy Resources API, and 6 more. Tagged areas include Energy, Australia, Utilities, Electricity, and Gas.

Simply Energy’s developer surface includes documentation, API reference, engineering blog, authentication, changelog, and 31 more developer resources.

🌐 Visit website 📡 Source on GitHub

48.5/100 developing ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

2 APIs

Energy Australia Utilities Electricity Gas Energy Retail Consumer Data Right CDR Smart Metering Energy Markets

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 48.5/100 · developing

Contract Quality 9.3 / 19

Developer Ergonomics 5.6 / 15

Access Clarity 3.2 / 15

Operational Transparency 7.2 / 10

Contract Governance 1.6 / 9

Discoverability 4.9 / 8

Regulatory Posture 9.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/simply-energy: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Simply Energy Data Holder Customers API

Data Holder Customer endpoints

Simply Energy Data Holder Operations API

Data Holder Operations endpoints

Simply Energy Distributed Energy Resources API

Distributed Energy Resource endpoints

Simply Energy Electricity Service Points API

Electricity Service Point endpoints

Simply Energy Electricity Usage API

Electricity Usage endpoints

Simply Energy Energy Account Balances API

Energy Account Balance endpoints

Simply Energy Energy Account Billing API

Energy Account Billing endpoints

Simply Energy Energy Accounts API

Energy Account endpoints

Simply Energy Energy Plans API

Energy Plan endpoints

Scroll for all 9

Open Collections 2

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

CDR Common API

OPEN COLLECTION

CDR Energy API

OPEN COLLECTION

Rate Limits 1

Documented rate limits and quota policies.

Simply Energy Rate Limits

14 limits

RATE LIMITS

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Simply Energy Authentication

none/oauth2/openIdConnect/mutualTLS · 0 schemes

SECURITY

Simply Energy Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Simply Energy Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Simply Energy Scopes

13 scopes · authorizationCode

13 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Simply Energy Agentic Access

27 operations · 5 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Registry

Registry

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 8

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

AgentSkill

AgentSkill

AgentSkill

AgentSkill

X-MCPServerCandidate

AgenticAccess

WellKnown

LLMsTxt

AgentSkill

Scroll for all 8

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 6

Authentication, authorization, and security posture

DomainSecurity

Authentication

OAuthScopes

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 5

Status, limits, changes, and where to get help

HelpCenter

RateLimits

StatusPage

Deprecation

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 4

The organization behind the API

Website

Website

Website

Website

LinkedIn

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

Overlay

Overlay

Source (apis.yml)

aid: simply-energy
url: https://raw.githubusercontent.com/api-evangelist/simply-energy/refs/heads/main/apis.yml
name: Simply Energy
kind: company
description: Simply Energy is the former brand of the Australian electricity and gas retailer that now trades as ENGIE, operated
  by IPower Pty Ltd (ACN 111 267 228) and IPower 2 Pty Ltd (ABN 24 070 374 293) trading as ENGIE (ABN 67 269 241 237), together
  with Simply Energy Solutions Pty Ltd. The business carried the Simply Energy name for seventeen years before rebranding
  to ENGIE in April 2024, and supplies more than 700,000 residential and business accounts across Victoria, South Australia,
  New South Wales, Queensland and Western Australia. It sits on the retail tier of the National Electricity Market value chain,
  buying wholesale energy and billing end customers, rather than in generation, transmission or distribution. Its API posture
  is entirely a product of statutory mandate, and in this case the mandate is genuinely implemented rather than merely claimed.
  The company is a designated Consumer Data Right energy data holder (data holder provider number DH002028) and is listed
  on the live CDR Register under the ENGIE brand. Its unauthenticated CDR Generic Plans endpoint, hosted for it by the Australian
  Energy Regulator's Energy Made Easy service, returns 2,452 real ENGIE tariff plans conforming to the Consumer Data Standards
  energy schemas, and its own registered public base URI serves the Consumer Data Standards discovery endpoints with correct
  x-v version negotiation. Everything else is closed. Customer usage, billing, service point and DER data are available only
  to ACCC accredited data recipients with explicit consumer consent, there is no developer portal, no self-serve API keys,
  no published OpenID Connect discovery document, and no open grid, market or system data of any kind.
imageNote: The `image` property was removed on 2026-08-26. It had been copied verbatim out of a bootstrap template and pointed
  at an icon belonging to groq, not to this company. That asset returns HTTP 200, so the record rendered another company's
  brand rather than a broken image, which is why it went unreported (roadmap#153). No correct icon has been sourced yet. Shipping
  the wrong company's mark is worse than shipping none; re-run the icon backfill once a real asset exists.
tags:
- Energy
- Australia
- Utilities
- Electricity
- Gas
- Energy Retail
- Consumer Data Right
- CDR
- Smart Metering
- Energy Markets
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
apis:
- aid: simply-energy:simply-energy-data-holder-customers-api
  name: Simply Energy Data Holder Customers API
  description: Data Holder Customer endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Data Holder Customers
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-data-holder-customers-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-data-holder-operations-api
  name: Simply Energy Data Holder Operations API
  description: Data Holder Operations endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Data Holder Operations
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-data-holder-operations-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-distributed-energy-resources-api
  name: Simply Energy Distributed Energy Resources API
  description: Distributed Energy Resource endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Distributed Energy Resources
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-distributed-energy-resources-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-electricity-service-points-api
  name: Simply Energy Electricity Service Points API
  description: Electricity Service Point endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Electricity Service Points
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-electricity-service-points-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-electricity-usage-api
  name: Simply Energy Electricity Usage API
  description: Electricity Usage endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Electricity Usage
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-electricity-usage-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-energy-account-balances-api
  name: Simply Energy Energy Account Balances API
  description: Energy Account Balance endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Energy Account Balances
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-energy-account-balances-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-energy-account-billing-api
  name: Simply Energy Energy Account Billing API
  description: Energy Account Billing endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Energy Account Billing
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-energy-account-billing-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-energy-accounts-api
  name: Simply Energy Energy Accounts API
  description: Energy Account endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Energy Accounts
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-energy-accounts-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
- aid: simply-energy:simply-energy-energy-plans-api
  name: Simply Energy Energy Plans API
  description: Energy Plan endpoints
  humanURL: https://engie.com.au/help-centre/cdr-policy
  baseURL: https://cdr.energymadeeasy.gov.au/engie/cds-au/v1
  tags:
  - Energy Plans
  properties:
  - type: OpenAPI
    url: openapi/simply-energy-energy-plans-api-openapi.yml
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
  - type: Documentation
    url: https://engie.com.au/help-centre/cdr-policy
  - type: APIReference
    url: https://consumerdatastandardsaustralia.github.io/standards/#common-apis
  - type: StatusPage
    url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
  - type: OAuthScopes
    url: scopes/simply-energy-scopes.yml
common:
- type: Overlay
  url: overlays/simply-energy-cds-energy-overlay.yaml
- type: AgentSkill
  url: skills/simply-energy-compare-energy-plans.md
- type: Overlay
  url: overlays/simply-energy-cds-common-overlay.yaml
- type: AgentSkill
  url: skills/simply-energy-check-data-holder-health.md
- type: AgentSkill
  url: skills/simply-energy-retrieve-consumer-energy-data.md
- type: X-MCPServerCandidate
  url: mcp/simply-energy-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: DomainSecurity
  url: security/simply-energy-domain-security.yml
- type: AgenticAccess
  url: agentic-access/simply-energy-agentic-access.yml
- type: Website
  url: https://www.simplyenergy.com.au/
- type: Website
  url: https://engie.com.au/
- type: Documentation
  url: https://engie.com.au/help-centre/cdr-policy
- type: APIReference
  url: https://consumerdatastandardsaustralia.github.io/standards/#energy-apis
- type: Registry
  url: https://api.cdr.gov.au/cdr-register/v1/energy/data-holders/brands/summary
- type: LinkedIn
  url: https://www.linkedin.com/company/engie-australia-new-zealand/
- type: HelpCenter
  url: https://engie.com.au/help-centre
- type: Blog
  url: https://engie.com.au/media-news
- type: PrivacyPolicy
  url: https://engie.com.au/help-centre/policies-and-commitments/privacy-policy
- type: TermsOfService
  url: https://engie.com.au/help-centre/policies-and-commitments/terms-of-use
- type: Authentication
  url: authentication/simply-energy-authentication.yml
- type: OAuthScopes
  url: scopes/simply-energy-scopes.yml
- type: Conventions
  url: conventions/simply-energy-conventions.yml
- type: ErrorCatalog
  url: errors/simply-energy-problem-types.yml
- type: RateLimits
  url: rate-limits/simply-energy-rate-limits.yml
- type: Lifecycle
  url: lifecycle/simply-energy-lifecycle.yml
- type: StatusPage
  url: https://public.cdr.engie.com.au/cds-au/v1/discovery/status
- type: Deprecation
  url: https://consumerdatastandardsaustralia.github.io/standards/#endpoint-version-schedule
- type: ChangeLog
  url: changelog/simply-energy-changelog.yml
- type: Conformance
  url: conformance/simply-energy-conformance.yml
- type: DataModel
  url: data-model/simply-energy-data-model.yml
- type: Packages
  url: packages/simply-energy-packages.yml
- type: WellKnown
  url: well-known/simply-energy-well-known.yml
- type: SecurityTxt
  url: well-known/simply-energy-engie-group-security.txt
- type: VulnerabilityDisclosure
  url: security/simply-energy-vulnerability-disclosure.yml
- type: Security
  url: https://www.engie.com/en/cert/
- type: LLMsTxt
  url: llms/simply-energy-llms.txt
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Work with this as data

Every provider 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 providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
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 provider

curl "https://apis.io/api/v1/providers/simply-energy"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/simply-energy/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/simply-energy/evidence"

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.