{"event":{"id":"evt-2024q3-crane-ppa","dedupe_key":"historical_material_change:2024-09-20:microsoft-signs-nuclear-restart-power-purchase-agreement","event_type":"historical_material_change","title":"Microsoft signs nuclear restart power purchase agreement","summary":"Constellation signed a 20-year Microsoft power purchase agreement to support restarting Three Mile Island Unit 1.","occurred_at":"2024-09-20T00:00:00.000Z","published_at":"2024-09-20T00:00:00.000Z","observed_at":"2026-10-09T19:12:47.000Z","reconstructed_at":"2026-10-09T19:12:47.000Z","ingest_type":"live_world_scan","locations":null,"status":"verified","confidence":0.97,"metadata":{"what_happened_at_time":"Constellation signed a 20-year Microsoft power purchase agreement to support restarting Three Mile Island Unit 1.","what_must_not_be_inferred":"Restart still required approvals and investment; expected 2028 power was not Q3 available capacity.","availability_status":"signed_contract","affected_layers":["layer-energy","layer-compute"],"epistemic_status":"observed_fact"},"created_at":"2026-10-10T07:49:15.914Z","updated_at":"2026-10-10T07:49:15.914Z"},"artifacts":[{"id":"art-2024q3-crane-ppa","dedupe_key":"e726776200e3289a5bced6ccdd420e1c26a15e977b3d675ce3b84cea898e1e0b","canonical_url":"https://www.constellationenergy.com/news/2024/Constellation-to-Launch-Crane-Clean-Energy-Center-Restoring-Jobs-and-Carbon-Free-Power-to-The-Grid.html","evidence_locator":"","artifact_type":"official_announcement","title":"Microsoft signs nuclear restart power purchase agreement","summary":"Constellation signed a 20-year Microsoft power purchase agreement to support restarting Three Mile Island Unit 1.","creator_entities":["Constellation Energy"],"released_at":"2024-09-20T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2024-Q3"},"created_at":"2026-10-10T07:49:15.908Z","updated_at":"2026-10-10T07:49:15.908Z","relation":"documented_by"}],"signals":[{"id":"sig-2024q3-compute","statement":"Longer model reasoning highlighted inference resource tradeoffs, while a signed nuclear PPA committed future data-center energy supply.","signal_type":"historical_layer_delta","direction":"increasing","confidence":0.93,"epistemic_status":"supported_inference","mapping_mode":"retrospective","reconstructed_at":"2026-10-09T19:12:47.000Z","created_at":"2026-10-10T07:49:15.918Z","updated_at":"2026-10-10T07:49:15.918Z"},{"id":"sig-2024q3-energy","statement":"A signed long-term Microsoft PPA financially anchored a proposed nuclear restart; future generation remained approval-dependent.","signal_type":"historical_layer_delta","direction":"increasing","confidence":0.93,"epistemic_status":"supported_inference","mapping_mode":"retrospective","reconstructed_at":"2026-10-09T19:12:47.000Z","created_at":"2026-10-10T07:49:15.918Z","updated_at":"2026-10-10T07:49:15.918Z"}]}