{ "schema_version": 1, "title": "Track 3 facility-level evidence/provenance ledger", "generated_at_utc": "2026-10-25T14:24:34.364843+00:00", "snapshot": { "source_commit": "74a381031b461dae4aa24534ace342bece482241" }, "semantics": { "missing_data": "Null/UNKNOWN means not captured; never evidence of absence.", "confidence": "Evidence strength is not probability.", "independence": "Metadata-derived corroboration does not prove methodological independence.", "conflict_scope": "Only structured retained fields are conflict-checked.", "publication_dates": "Do not substitute dataset update date for source publication date." }, "checklist": [ { "id": "ORIGINAL_RAW_SOURCE", "status": "PARTIAL", "coverage": "Epoch raw publisher fields retained for all facilities; linked external documents referenced, not universally mirrored." }, { "id": "SOURCE_URL", "status": "INGESTED", "coverage": "Canonical dataset, selected external source URLs, and evidence-record source URLs retained." }, { "id": "SOURCE_PUBLICATION_DATE", "status": "PARTIAL", "coverage": "Individual publication dates remain null unless explicitly captured; dataset update/access dates are separate." }, { "id": "CAPTURE_DATE", "status": "INGESTED", "coverage": "Epoch access date plus evidence/footprint capture dates retained where available." }, { "id": "EXACT_SOURCE_FIELD_VALUE", "status": "PARTIAL", "coverage": "Exact field/value captured for retained Epoch raw fields; third-party source excerpts are not archived." }, { "id": "NORMALIZED_VALUE", "status": "INGESTED", "coverage": "Raw publisher values paired with normalized values." }, { "id": "TRANSFORMATION", "status": "INGESTED", "coverage": "Every publisher field documents the conservative transformation applied." }, { "id": "EVIDENCE_TYPE", "status": "INGESTED", "coverage": "Existing evidence types carried through." }, { "id": "EVIDENCE_CONFIDENCE", "status": "INGESTED", "coverage": "Existing confidence labels retained verbatim." }, { "id": "PRIMARY_SECONDARY", "status": "PARTIAL", "coverage": "Conservative metadata classification; unclassified records remain unclassified." }, { "id": "INDEPENDENT_CORROBORATION", "status": "DERIVED_CONSERVATIVE", "coverage": "Distinct retained source URL/name test; not proof of independence." }, { "id": "CONFLICTING_EVIDENCE", "status": "DERIVED_STRUCTURED_ONLY", "coverage": "Only differing structured retained values are flagged." }, { "id": "LAST_VERIFICATION_DATE", "status": "DERIVED", "coverage": "Latest available retained capture/access date per facility." }, { "id": "REVIEWER_AUDIT_TRAIL", "status": "AUTOMATED_ONLY", "coverage": "Automated build events recorded; no human reviewer invented." }, { "id": "IMMUTABLE_HISTORICAL_SNAPSHOTS", "status": "REPOSITORY_GIT_HISTORY", "coverage": "Each build records its Git commit and SHA-256 input hashes in a new snapshot manifest." } ], "summary": { "facility_count": 93, "evidence_record_count": 2929, "field_provenance_items": 1488, "facilities_with_selected_external_sources": 93, "facilities_with_corrob": 93, "facilities_with_structured_conflicts": 0 }, "source_artifacts": [ { "path": "data/external/epoch_ai/registry.json", "sha256": "f8b9276f58fc7e452fb3117ac46e854ad6469bc06f38ca516753c7a8f1eba8e7" }, { "path": "data/track3/evidence_records.json", "sha256": "cf7a68c6394c4e706f4d563b0d25492f4d5f83890ddb3ca09e65832093722470" }, { "path": "data/track3/site_status.json", "sha256": "2f2316371939ee1c0771bef409df3e6254932af25a4f60ecb57054daf1a43863" }, { "path": "data/track3/building_footprints_index.json", "sha256": "ae1064553c49b097789713b3bfb686cf9dda8d71fc13d75c872f9ebc63e65285" }, { "path": "data/track3/time_series_verification.json", "sha256": "540dc34733a2e0d379afef6e490dd7cab1cfead22572d01a8c5fc385c5b5bcaf" } ], "facilities": [ { "facility_id": "EPOCH-c20399471d1c5e4a", "facility_name": "Colossus 2", "location": { "country": "United States", "state_province": "TN", "address": "5420 Tulane Rd, Memphis, TN 38109" }, "canonical_source": { "publisher": "Epoch AI", "dataset": "AI data centers", "dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv", "repository_raw_path": "data/external/epoch_ai/data_centers.csv", "repository_registry_path": "data/external/epoch_ai/registry.json", "source_dataset_update_date": "2026-09-24", "capture_date": "2026-10-11", "publication_date": null, "publication_date_status": "DATASET_UPDATE_DATE_IS_NOT_TREATED_AS_PUBLICATION_DATE", "external_raw_sha256": "f0d800e16f7c7daf410f79333a9f1ac2a90a5b57d45bd0f608ea3aca28cf72e4" }, "field_provenance": [ { "field_id": "name", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Name", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "Colossus 2", "normalized_value": "Colossus 2", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_h100_equivalents", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current H100 equivalents", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "1111672.5618999496", "normalized_value": 1111672.5618999496, "transformation": "Parsed numeric publisher field; unit semantics retained from field name.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_power_mw_", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current power (MW)", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "946", "normalized_value": 946, "transformation": "Parsed numeric publisher field; unit semantics retained from field name.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_total_capital_cost_2025_usd_billions_", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current total capital cost (2025 USD billions)", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "35.836372", "normalized_value": 35.836372, "transformation": "Parsed numeric publisher field; unit semantics retained from field name.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "owner", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Owner", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "SpaceXAI #confident", "normalized_value": "SpaceXAI #confident", "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "users", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Users", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "Anthropic #confident, Cursor #confident, SpaceXAI #confident", "normalized_value": "Anthropic #confident, Cursor #confident, SpaceXAI #confident", "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "selected_sources", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Selected Sources", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "- [WSJ profile of the Colossus data centers](https://www.wsj.com/tech/elon-musk-xai-memphis-tennessee-power-dec4c70d) \n- [Final GPU count reported by Elon Musk](https://x.com/elonmusk/status/1947701807389515912)\n- [MLGW update mentioning power requests for Colossus 2](https://www.mlgw.com/images/content/files/pdf/new/5-5-25%20xAI%20Update.pdf#page=4)\n- [SpaceX-Cursor partnership to use Colossus](https://x.com/SpaceX/status/2046713419978453374)\n- [Anthropic to use Colossus 2 from June 2026](https://x.com/nottombrown/status/2057194829986300375)\n- [SpaceX S-1 filing, mentioning exact compute and power for Colossus 2](https://www.sec.gov/Archives/edgar/data/1181412/000162828026036936/spaceexplorationtechnologi.htm)\n", "normalized_value": null, "transformation": "Markdown link extraction only; original raw source-list text remains retained.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "calculations_sheet", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Calculations sheet", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "https://docs.google.com/spreadsheets/d/1oZpZ9nTTV6wW0xjc1pPOQmKS7NCyDzuG2HiycC1GqFs/edit?usp=sharing", "normalized_value": "https://docs.google.com/spreadsheets/d/1oZpZ9nTTV6wW0xjc1pPOQmKS7NCyDzuG2HiycC1GqFs/edit?usp=sharing", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "project", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Project", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "", "normalized_value": "Colossus 2", "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_chip_types", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current chip types", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "B200,B300", "normalized_value": null, "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "all_chip_types", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "All chip types", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "B200,B300", "normalized_value": null, "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "investors", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Investors", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "", "normalized_value": "", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "construction_companies", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Construction companies", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "", "normalized_value": "Darana Hybrid", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "energy_companies", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Energy companies", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "", "normalized_value": "Tennessee Valley Authority", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "country", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Country", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "United States", "normalized_value": "United States", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "address", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Address", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "5420 Tulane Rd, Memphis, TN 38109", "normalized_value": "5420 Tulane Rd, Memphis, TN 38109", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." } ], "selected_external_sources": [ { "original_raw_source_url": "https://www.wsj.com/tech/elon-musk-xai-memphis-tennessee-power-dec4c70d", "source_publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "capture_date": "2026-10-11", "evidence_type": "selected_external_source_reference", "confidence": "not_assessed", "primary_secondary": "unclassified", "transformation": "URL extracted from retained Epoch Selected Sources field; 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This establishes a site-specific TVA power relationship/request, not a queue ID.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "medium", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "secondary", "origin_basis": "Source metadata indicates reporting/registry/public-source material.", "site_specific": false, "review_state": "PUBLISHED_RECORD" }, { "evidence_id": "EVID-REMOTE-0ec479f55f65519eee69", "domain": "remote_sensing", "evidence_type": "optical", "status": "INGESTED_DERIVED", "source": { "name": "Sentinel-2 MSI L2A", "kind": "public satellite STAC + raw COG processing", "urls": [ "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items/S2A_MSIL2A_20260526T164711_R126_T16SBD_20260527T042512" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": "S2A_MSIL2A_20260526T164711_R126_T16SBD_20260527T042512" }, "capture_date": "2026-05-26", "observed_on": "2026-05-26", "exact_source_field": null, "exact_source_value": null, "retained_basis": "Compact metrics computed from a raw COG window around the geocoded public site address.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "derived_measurement", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "unclassified", "origin_basis": "Current repository metadata does not establish primary/secondary status.", "site_specific": true, "review_state": "AUTOMATED_PUBLIC_SOURCE_PROCESSING" }, { "evidence_id": "EVID-REMOTE-54a4157e796884b12a4a", "domain": "remote_sensing", "evidence_type": "optical", "status": "INGESTED_DERIVED", "source": { "name": "Sentinel-2 MSI L2A", "kind": "public satellite STAC + raw COG processing", "urls": [ "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items/S2C_MSIL2A_20260603T163841_R126_T16SBD_20260603T213615" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": "S2C_MSIL2A_20260603T163841_R126_T16SBD_20260603T213615" }, "capture_date": "2026-06-03", "observed_on": "2026-06-03", "exact_source_field": null, "exact_source_value": null, "retained_basis": "Compact metrics computed from a raw COG window around the geocoded public site address.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "derived_measurement", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "unclassified", "origin_basis": "Current repository metadata does not establish primary/secondary status.", "site_specific": true, "review_state": "AUTOMATED_PUBLIC_SOURCE_PROCESSING" }, { "evidence_id": "EVID-REMOTE-bc30c61946b7bd32a342", "domain": "remote_sensing", "evidence_type": "optical", "status": "INGESTED_DERIVED", "source": { "name": "Sentinel-2 MSI L2A", "kind": "public satellite STAC + raw COG processing", "urls": [ "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items/S2B_MSIL2A_20260608T163859_R126_T16SBD_20260608T203321" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": "S2B_MSIL2A_20260608T163859_R126_T16SBD_20260608T203321" }, "capture_date": "2026-06-08", "observed_on": "2026-06-08", "exact_source_field": null, "exact_source_value": null, "retained_basis": "Compact metrics computed from a raw COG window around the geocoded public site address.", "transformation": "Existing repository evidence record retained; 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builder adds provenance metadata only.", "confidence": "public_source_capture", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "unclassified", "origin_basis": "Current repository metadata does not establish primary/secondary status.", "site_specific": true, "review_state": "MANUAL_PUBLIC_WEB_CAPTURE" } ], "independent_corroboration": { "status": "CORROBORATION_PRESENT", "distinct_source_url_count": 30, "distinct_source_name_count": 7, "method": "Distinct retained source URL/name metadata; this does not prove methodological independence." }, "conflicting_evidence": { "status": "NO_STRUCTURED_CONFLICT_OBSERVED", "conflicts": [], "scope": "Structured retained fields only." }, "verification": { "last_verification_date": "2026-10-22", "reviewer_audit_trail": [ { "event": "AUTOMATED_PROVENANCE_BUILD", "actor_type": "automated_builder", "actor": "build_facility_provenance.py", "human_reviewer": null, "repository_commit": "74a381031b461dae4aa24534ace342bece482241", "review_state": "AUTOMATED" } ], "manual_review_status": "NO_HUMAN_REVIEWER_RECORDED" }, "immutable_snapshot": { "snapshot_commit": "74a381031b461dae4aa24534ace342bece482241", "retention": "Git history plus content-addressed repository blobs; external source documents are not universally archived." } }, { "facility_id": "EPOCH-8838deed95ffb554", "facility_name": "Meta Prometheus", "location": { "country": "United States", "state_province": "OH", "address": "1 Community Cir, New Albany, OH 43054" }, "canonical_source": { "publisher": "Epoch AI", "dataset": "AI data centers", "dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv", "repository_raw_path": "data/external/epoch_ai/data_centers.csv", "repository_registry_path": "data/external/epoch_ai/registry.json", "source_dataset_update_date": "2026-09-24", "capture_date": "2026-10-11", "publication_date": null, "publication_date_status": "DATASET_UPDATE_DATE_IS_NOT_TREATED_AS_PUBLICATION_DATE", "external_raw_sha256": "f0d800e16f7c7daf410f79333a9f1ac2a90a5b57d45bd0f608ea3aca28cf72e4" }, "field_provenance": [ { "field_id": "name", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Name", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "Meta Prometheus", "normalized_value": "Meta Prometheus", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_h100_equivalents", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current H100 equivalents", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "536343.0015159171", "normalized_value": 536343.0015159171, "transformation": "Parsed numeric publisher field; unit semantics retained from field name.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_power_mw_", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current power (MW)", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "471", "normalized_value": 471, "transformation": "Parsed numeric publisher field; unit semantics retained from field name.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_total_capital_cost_2025_usd_billions_", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current total capital cost (2025 USD billions)", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "17.842422", "normalized_value": 17.842422, "transformation": "Parsed numeric publisher field; unit semantics retained from field name.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "owner", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Owner", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "Meta #confident", "normalized_value": "Meta #confident", "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "users", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Users", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "Meta #confident", "normalized_value": "Meta #confident", "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "selected_sources", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Selected Sources", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "- [Meta blog post with details on Prometheus](https://engineering.fb.com/2025/09/29/data-infrastructure/metas-infrastructure-evolution-and-the-advent-of-ai/)\n- [New Albany Business Park land use map](https://drive.google.com/file/d/1Wb_BBVOnhu5UCQ8Q5d6iRIG9K_vigD8A/view?usp=sharing)\n- [Letter on Socrates South Power Generation Project](https://drive.google.com/file/d/1OMbFbdNGPmfSkwVWqOAK-5pOufiKQBu1/view?usp=sharing)\n", "normalized_value": null, "transformation": "Markdown link extraction only; original raw source-list text remains retained.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "calculations_sheet", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Calculations sheet", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "https://docs.google.com/spreadsheets/d/1LOiioZUG696TC3nOAXROvhJBhhN7to-r6KR05Hd0qCk/edit?usp=sharing", "normalized_value": "https://docs.google.com/spreadsheets/d/1LOiioZUG696TC3nOAXROvhJBhhN7to-r6KR05Hd0qCk/edit?usp=sharing", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "project", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Project", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "Prometheus #confident", "normalized_value": "Prometheus #confident", "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "current_chip_types", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Current chip types", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "B300", "normalized_value": null, "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "all_chip_types", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "All chip types", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "B300", "normalized_value": null, "transformation": "Whitespace trimming only; publisher confidence suffixes remain in raw value.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "investors", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Investors", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "", "normalized_value": "", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "construction_companies", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Construction companies", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "", "normalized_value": "Williams Companies", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "energy_companies", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Energy companies", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "Williams,American Electric Power", "normalized_value": "Williams,American Electric Power", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "country", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Country", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "United States", "normalized_value": "United States", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." }, { "field_id": "address", "raw_source": { "repository_path": "data/external/epoch_ai/data_centers.csv", "field_name": "Address", "external_dataset_url": "https://epoch.ai/data/data_centers/data_centers.csv" }, "source_publication_date": null, "capture_date": "2026-10-11", "raw_value": "1 Community Cir, New Albany, OH 43054", "normalized_value": "1 Community Cir, New Albany, OH 43054", "transformation": "Whitespace normalization only; no semantic inference.", "evidence_type": "publisher_dataset_field", "confidence": "source-published", "confidence_semantics": "Source-field provenance, not probability." } ], "selected_external_sources": [ { "original_raw_source_url": "https://engineering.fb.com/2025/09/29/data-infrastructure/metas-infrastructure-evolution-and-the-advent-of-ai/", "source_publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "capture_date": "2026-10-11", "evidence_type": "selected_external_source_reference", "confidence": "not_assessed", "primary_secondary": "unclassified", "transformation": "URL extracted from retained Epoch Selected Sources field; target document not mirrored." }, { "original_raw_source_url": "https://drive.google.com/file/d/1Wb_BBVOnhu5UCQ8Q5d6iRIG9K_vigD8A/view?usp=sharing", "source_publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "capture_date": "2026-10-11", "evidence_type": "selected_external_source_reference", "confidence": "not_assessed", "primary_secondary": "unclassified", "transformation": "URL extracted from retained Epoch Selected Sources field; target document not mirrored." }, { "original_raw_source_url": "https://drive.google.com/file/d/1OMbFbdNGPmfSkwVWqOAK-5pOufiKQBu1/view?usp=sharing", "source_publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "capture_date": "2026-10-11", "evidence_type": "selected_external_source_reference", "confidence": "not_assessed", "primary_secondary": "unclassified", "transformation": "URL extracted from retained Epoch Selected Sources field; target document not mirrored." } ], "evidence_records": [ { "evidence_id": "EVID-e1d376b08bccc351deeb", "domain": "grid_connection", "evidence_type": "site_specific_utility_capacity_record", "status": "SITE_LEVEL_EVIDENCE", "source": { "name": "AEP Ohio", "kind": "public-record facility index", "urls": [ "https://www.datacenter.fyi/utility/american-electric-power" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": null }, "capture_date": "2026-09-27", "observed_on": null, "exact_source_field": null, "exact_source_value": null, "retained_basis": "The AEP public-record index lists Meta Prometheus in Ohio and associates it with AEP; a reported 695 MW facility capacity is retained as source-specific facility data, not equated with queue capacity or measured load.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "medium", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "unclassified", "origin_basis": "Current repository metadata does not establish primary/secondary status.", "site_specific": false, "review_state": "PUBLISHED_RECORD" }, { "evidence_id": "EVID-a1c8ef4800c9e7c94d68", "domain": "grid_connection", "evidence_type": "site_specific_utility_relationship", "status": "SITE_LEVEL_EVIDENCE", "source": { "name": "AEP Ohio", "kind": "secondary sourced facility registry", "urls": [ "https://registry.deploy.report/datacenters/facilities/meta-ohio-new-albany" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": null }, "capture_date": "2026-09-27", "observed_on": null, "exact_source_field": null, "exact_source_value": null, "retained_basis": "The facility record identifies AEP Ohio as the grid-interconnection utility for the Meta New Albany campus. The record is retained as corroborating utility evidence.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "medium", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "secondary", "origin_basis": "Source metadata explicitly describes a secondary source.", "site_specific": false, "review_state": "PUBLISHED_RECORD" }, { "evidence_id": "EVID-POWER-POWER-META-NEW-ALBANY-2023", "domain": "power_telemetry", "evidence_type": "annual_electricity_consumption", "status": "INGESTED_SNAPSHOT", "source": { "name": "Meta 2024 Responsible Business Practices Report — Data Index", "kind": "company sustainability report", "urls": [ "https://sustainability.atmeta.com/wp-content/uploads/2024/08/Meta-2024-Responsible-Business-Practices-Report-Index.pdf" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": null }, "capture_date": "2026-09-26", "observed_on": "2023", "exact_source_field": null, "exact_source_value": null, "retained_basis": "Meta's report lists New Albany (OH) at 793,063 MWh of electricity consumption for 2023. The Epoch AI record used here is Meta Prometheus in New Albany, Ohio; this is an annual facility consumption figure, not an interval demand series.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "medium", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "unclassified", "origin_basis": "Current repository metadata does not establish primary/secondary status.", "site_specific": true, "review_state": "PUBLISHED_RECORD" }, { "evidence_id": "EVID-REMOTE-51f50d68f1c4216fa85f", "domain": "remote_sensing", "evidence_type": "optical", "status": "INGESTED_DERIVED", "source": { "name": "Sentinel-2 MSI L2A", "kind": "public satellite STAC + raw COG processing", "urls": [ "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items/S2B_MSIL2A_20260103T162559_R040_T17TLE_20260103T200626" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": "S2B_MSIL2A_20260103T162559_R040_T17TLE_20260103T200626" }, "capture_date": "2026-01-03", "observed_on": "2026-01-03", "exact_source_field": null, "exact_source_value": null, "retained_basis": "Compact metrics computed from a raw COG window around the geocoded public site address.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "derived_measurement", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "unclassified", "origin_basis": "Current repository metadata does not establish primary/secondary status.", "site_specific": true, "review_state": "AUTOMATED_PUBLIC_SOURCE_PROCESSING" }, { "evidence_id": "EVID-REMOTE-27e9b6d403d7f6d162fb", "domain": "remote_sensing", "evidence_type": "optical", "status": "INGESTED_DERIVED", "source": { "name": "Sentinel-2 MSI L2A", "kind": "public satellite STAC + raw COG processing", "urls": [ "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items/S2C_MSIL2A_20260108T162651_R040_T17TLE_20260108T200411" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": "S2C_MSIL2A_20260108T162651_R040_T17TLE_20260108T200411" }, "capture_date": "2026-01-08", "observed_on": "2026-01-08", "exact_source_field": null, "exact_source_value": null, "retained_basis": "Compact metrics computed from a raw COG window around the geocoded public site address.", "transformation": "Existing repository evidence record retained; builder adds provenance metadata only.", "confidence": "derived_measurement", "confidence_semantics": "Published evidence confidence label, not probability.", "evidence_origin": "unclassified", "origin_basis": "Current repository metadata does not establish primary/secondary status.", "site_specific": true, "review_state": "AUTOMATED_PUBLIC_SOURCE_PROCESSING" }, { "evidence_id": "EVID-REMOTE-07f2522087e5e5565e95", "domain": "remote_sensing", "evidence_type": "optical", "status": "INGESTED_DERIVED", "source": { "name": "Sentinel-2 MSI L2A", "kind": "public satellite STAC + raw COG processing", "urls": [ "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items/S2B_MSIL2A_20260123T162459_R040_T17TLE_20260123T195809" ], "publication_date": null, "publication_date_status": "NOT_CAPTURED_IN_CURRENT_REPOSITORY", "record_locator": "S2B_MSIL2A_20260123T162459_R040_T17TLE_20260123T195809" }, "capture_date": "2026-01-23", "observed_on": "2026-01-23", "exact_source_field": null, "exact_source_value": null, "retained_basis": "Compact metrics computed from a raw COG window around the geocoded public site address.", "transformation": "Existing repository evidence record retained; 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