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.

Natron Energy is profiled on the APIs.io network. Tagged areas include Energy Storage, Batteries, Sodium-Ion Batteries, Prussian Blue Analog, and PBA Chemistry.

🌐 Visit website 📡 Source on GitHub

3.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Energy Storage BatteriesSodium-Ion BatteriesPrussian Blue AnalogPBA ChemistryData Center UPSCritical PowerIndustrial BackupPeak ShavingEV Charging SupportHardware CleantechU.S. ManufacturingDefunct

Kin Score

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

Composite quality — 3.3/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 1.2 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/natron: 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 →

Security Posture 1

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

Natron Domain Security

DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 3

The organization behind the API

Website

Website

LinkedIn

Crunchbase

Crunchbase

Other 9

Properties that don't map to a standard resource type

Company

USManufacturing

Products

BlueTray4000

BlueRack250

DataCenters

BlueRack250Datasheet

BlueRack250Datasheet

WARNNotice

WARNNotice

Wikipedia

Wikipedia

Scroll for all 9

Source (apis.yml)

aid: natron
name: Natron Energy
description: 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.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Producing
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/natron.png
tags:
- Energy Storage
- Batteries
- Sodium-Ion Batteries
- Prussian Blue Analog
- PBA Chemistry
- Data Center UPS
- Critical Power
- Industrial Backup
- Peak Shaving
- EV Charging Support
- Hardware
- Cleantech
- U.S. Manufacturing
- Defunct
url: https://raw.githubusercontent.com/api-evangelist/natron/refs/heads/main/apis.yml
created: '2026-05-24'
modified: '2026-05-24'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/natron-domain-security.yml
- type: Website
  url: https://natron.energy
- type: Company
  url: https://natron.energy/company
- type: USManufacturing
  url: https://natron.energy/company/u-s-manufacturing
- type: Products
  url: https://natron.energy/products
- type: BlueTray4000
  url: https://natron.energy/products/bluetray-4000
- type: BlueRack250
  url: https://natron.energy/products/bluerack-250-battery-cabinet
- type: DataCenters
  url: https://natron.energy/industries/data-centers-critical-power
- type: BlueRack250Datasheet
  url: https://natron.energy/files/br250_industrial_datasheet_rev2.5_061324-1.pdf
- type: WARNNotice
  url: https://www.michigan.gov/leo/-/media/Project/Websites/leo/Documents/WD-DATA_PUBLIC_WARN_NOTICES4/2025/2025-08-29_WARN-Notice_Natron-Energy-Inc.pdf
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/Natron_Energy
- type: LinkedIn
  url: https://www.linkedin.com/company/natron-energy
- type: Crunchbase
  url: https://www.crunchbase.com/organization/natron-energy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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