{"gap":{"gap_id":"OEG-BESS-001","case_id":"SE-BESS-SODIUM-001","case_title":"Sodium-Ion BESS Commercialization","case_url":"https://structurevidence.org/cases/sodium-ion-bess/","claim_id":"SE-BESS-SODIUM-001.NAMED_COMMISSIONED_SITE","claim_text":"A named customer sodium-ion stationary BESS site has been commissioned.","current_state":"NOT_ESTABLISHED","current_scope":"Stationary sodium-ion BESS only; vehicle, starter-battery, and solid-state battery claims are excluded.","evidence_cutoff":"2026-09-24","what_is_established":["A stationary sodium-ion BESS product launch","A public supply cooperation agreement","Future delivery milestones stated by manufacturers"],"what_is_not_established":["Completed customer delivery","Named-site commissioning or grid connection","Customer acceptance"],"what_would_change_this":"A public, attributable record identifying the customer or operator, site, sodium-ion stationary system, commissioning or grid-connection date, and operational status.","acceptable_source_examples":["Customer acceptance record","Named-site commissioning notice","Grid-connection or regulator record tied to the system"],"non_qualifying_examples":["Product launch","Framework agreement","Future delivery target","Unnamed pilot or showcase"],"last_reviewed":"2026-10-05","challenge_url":"https://structevidence.com/gaps/OEG-BESS-001/"},"change_log":[{"change_id":"OEG-CHANGE-003","gap_id":"OEG-BESS-001","challenge_id":null,"change_type":"GAP_OPENED","summary":"Initial open evidence gap published under Open Evidence Gap Protocol v0.1.","attribution":"StructEvidence","previous_state":null,"new_state":"NOT_ESTABLISHED","changed_at":"2026-10-05","append_only":true}],"no_auto_state_change":true}