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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Simply Energy the way a machine reads it — 17 machine-readable artifacts across 2 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
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. From those artifacts we compute the Kin Score — Simply Energy scores 48.5/100 (developing), with a separate agent-readiness read of 26/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Simply Energy
Each block below is one kind of artifact we hold for Simply Energy. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 9
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 9 ·
Open Collections 2
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
CDR Common API
OPEN COLLECTIONCDR Energy API
OPEN COLLECTIONRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Simply Energy Rate Limits
RATE LIMITSSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Simply Energy — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 8
MCP servers, agent skills, and machine-readable catalogs
Scroll within the panel for all 8 ·
Design & Contract 5
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/simply-energy · machine-readable index on apis.io
This is an independent, third-party profile of Simply Energy, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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