Natron Energy
Natron Energy was a Santa Clara, California sodium-ion battery company spun out of Stanford University in 2012 by Colin Wessells, building cells based on a Prussian blue analog (PBA) chemistry that promised long cycle life, fast charge and discharge, non-flammability, and a domestic supply chain free of lithium, cobalt, and nickel. Natron's product line was aimed at critical power and industrial backup applications, including the BlueTray 4000 — a 48 VDC, 4 kW (6 kW peak), 50 V rack-mounted sodium-ion battery tray — and the BlueRack 250 / 500 kW battery cabinets targeted at data center UPS, peak shaving, and EV fast-charging support. The company stood up the first U.S. sodium-ion mass-production line in Holland, Michigan in 2024 (a converted Clarios facility, ~600 MW/yr nameplate) and announced a planned $1.4 billion factory in Kingsboro (Rocky Mount), North Carolina that was expected to create more than 1,000 jobs. Investors included Khosla Ventures, Chevron Technology Ventures, United Airlines Ventures, Aramco Ventures, and Sherwood Partners. After ~$373M raised, on August 27, 2025 Natron's board determined that ongoing fundraising and order-pipeline efforts were unsuccessful; the company filed a WARN notice and permanently ceased operations on September 3, 2025, terminating staff at both the Holland, MI and Santa Clara, CA sites and cancelling the North Carolina factory. Sherwood Partners, the largest shareholder, took over wind-down and asset disposition. Natron was a battery hardware OEM with no public developer API, SDK, GitHub organization, or programmable cloud surface.
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 Natron 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 — Natron Energy scores 6.8/100 (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.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Natron Energy
Each block below is one kind of artifact we hold for Natron 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 Natron 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.
Access & Security 1
Authentication, authorization, and security posture
Company 3
The organization behind the API
Other 9
Properties that don't map to a standard resource type
Scroll within the panel for all 9 ·
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