E.ON Next
E.ON Next Energy Limited is the United Kingdom retail supply arm of the E.ON Group, formed after E.ON's 2019 acquisition of npower and serving roughly five million British households and small businesses with electricity, gas, smart meters, solar, home batteries, heat pumps and EV charging tariffs. It sits at the retail end of the GB energy value chain — buying wholesale, settling through Elexon, reading SMETS2 smart meters over the licensed Smart DCC network, and billing the customer — and it runs its entire operation on Kraken, the API-first, GraphQL-based energy operating system licensed from Kraken Technologies (Octopus Energy Group), onto which 5.8 million customers were migrated between June 2020 and June 2022. Its API posture is the exact opposite of its platform's reputation: the Kraken architecture underneath is API-first, but nothing is published outward. There is no developer portal, no API documentation, no OpenAPI, and no third-party route to a customer's usage or billing data; developer.eonnext.com and docs.eonnext.com do not resolve, and api.eonnext.com answers every path with an unauthenticated AWS API Gateway 403 "Missing Authentication Token". Britain mandated the metering infrastructure, not the data right — E.ON Next is bound by the Smart Energy Code and the DCC, which is live and implemented, but no consumer data-portability mandate equivalent to Australia's CDR or Ontario's Green Button applies to it, and none of the open GB market data (NESO Carbon Intensity, Elexon BSC, DNO open-data portals) originates here. Consumer data is closed, market data is published by other parties, and this profile is identity-only by evidence.
E.ON Next is tracked in the API Evangelist network. This page is the human-readable profile that sits on top of the machine-readable index we maintain at apis.io.
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. The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
E.ON Next is in the network as a tracked entity. We haven't yet indexed a public API surface for it — when one is published, the artifacts, score, and agent-readiness read will appear here automatically. The source repository is where that profile is built.
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