Helion Energy
Helion Energy is an Everett, Washington fusion power company building commercial fusion electricity generators using a pulsed, magneto-inertial field-reversed configuration (FRC) approach burning deuterium and helium-3. Helion forms two FRC plasmas at opposite ends of its machine, accelerates them toward each other, merges them, and uses pulsed magnetic compression to drive them to fusion conditions; the expanding plasma pushes against the confining magnetic field and induces current directly back into the machine's capacitor bank via Faraday's Law, recapturing electricity without a steam cycle. Founded in 2013 by David Kirtley, John Slough, Chris Pihl, and George Votroubek, Helion is chaired by Sam Altman and has progressed through seven generations of prototypes (IPA, Venti, Trenta, and most recently Polaris) on its way to commercial generators. Polaris, brought online in late 2024, is the company's seventh-generation machine and the first privately developed fusion device to demonstrate measurable deuterium-tritium fusion, reaching 150 million degrees Celsius in February 2026. In May 2023, Helion signed the world's first commercial fusion power purchase agreement, committing to deliver 50 MWe to Microsoft starting in 2028, with the Orion plant planned for the Malaga, Washington area; a subsequent agreement with Nucor targets a 500-MWe facility. Helion is funded by Sam Altman, SoftBank Vision Fund 2, Nucor, Lightspeed Venture Partners, and others, with a reported $5.4B valuation as of early 2025. The company's revenue model is fusion electricity sales under long-term PPAs; Helion has no public developer API, SDK, or open-source software product, and its public GitHub organization (Helion-Energy) contains only forks of plasma-physics simulation tools (WarpX, FerroX, pyamrex, maestrowf).
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
API Evangelist profiles Helion Energy the way a machine reads it — 1 machine-readable artifact, 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 — Helion Energy scores 4.5/100 (minimal), with a separate agent-readiness read of 0/100 (human only). 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
Put this on your own site. The badge is drawn live from Helion Energy's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/helion/"
title="Helion Energy on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/helion.svg"
alt="Helion Energy Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/helion/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/helion/"
title="Helion Energy on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/helion/card.svg"
alt="Helion Energy Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Helion Energy
Each block below is one kind of artifact we hold for Helion 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.
Security Posture 1
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.
Resources
Every other property we hold for Helion 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.
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 2
Status, limits, changes, and where to get help
Company 8
The organization behind the API
Scroll within the panel for all 8 ·
Other 6
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/helion · machine-readable index on apis.io
This is an independent, third-party profile of Helion 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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