{
  "claim_id": "SE-BESS-SODIUM-001.SUPPLY_COOPERATION_AGREEMENT",
  "case_id": "SE-BESS-SODIUM-001",
  "version": "v0.1",
  "statement": "A sodium-ion energy-storage supply cooperation agreement is publicly evidenced.",
  "case_title": "Sodium-Ion BESS Commercialization State",
  "state": "SUPPORTED",
  "as_of": "2026-09-24",
  "scope": "Stationary battery energy storage systems only; vehicle, starter-battery, and solid-state battery claims are excluded.",
  "supports": [
    "Two counterparties publicly described a three-year 60 GWh sodium-ion energy-storage cooperation agreement."
  ],
  "does_not_support": [
    "Shipment, customer acceptance, commissioning, grid connection, or operating performance."
  ],
  "unknowns": [
    "production_readiness: VERIFICATION_REQUIRED",
    "customer_batch_delivery: NOT_ESTABLISHED",
    "named_commissioned_site: NOT_ESTABLISHED",
    "independent_field_performance: NOT_ESTABLISHED",
    "long_operating_history: UNKNOWN",
    "lifecycle_cost_advantage_over_lfp: NOT_ESTABLISHED",
    "universal_lfp_replacement: NOT_ESTABLISHED"
  ],
  "counter_evidence": [],
  "next_observable": "Named customer shipment and acceptance record; Named site commissioning or grid-connection record; Dated operating history tied to that system; Independent performance or safety validation; Repeat procurement or multi-operator replication",
  "provenance": [
    {
      "source_ref": "cases/sodium-ion-bess/state-v0.1.json",
      "source_role": "PRIMARY_PUBLIC_EVIDENCE_STATE"
    },
    {
      "source_ref": "cases/sodium-ion-bess/stop-v0.1.html",
      "source_role": "HUMAN_CITATION_BOUNDARY"
    },
    {
      "source_ref": "cases/sodium-ion-bess/publication-control-v0.1.json",
      "source_role": "PUBLICATION_AUTHORITY"
    },
    {
      "source_ref": "cases/sodium-ion-bess/decision-memory-v0.1.json",
      "source_role": "DECISION_STRUCTURE"
    }
  ],
  "canonical_url": "https://structurevidence.org/claims/SE-BESS-SODIUM-001.SUPPLY_COOPERATION_AGREEMENT.json",
  "state_url": "https://structurevidence.org/cases/sodium-ion-bess/state-v0.1.json",
  "stop_point_url": "https://structurevidence.org/cases/sodium-ion-bess/stop-v0.1.html",
  "method_contract": "https://structurevidence.org/method-contract.json",
  "citation_requirements": {
    "must_preserve_state": true,
    "must_preserve_as_of": true,
    "must_include_boundary_when_material": true
  },
  "aliases": [
    "sodium-ion",
    "sodium ion",
    "BESS",
    "stationary storage",
    "sodium-ion cooperation agreement",
    "60 GWh agreement"
  ],
  "keywords": [
    "sodium-ion",
    "bess",
    "supply",
    "cooperation",
    "agreement"
  ]
}