{
  "contract": {
    "agency_name": "CSIRO",
    "amendment_count": 6,
    "category_code": "83101800",
    "contract_end_date": "2026-06-30",
    "contract_id": "CN3518711",
    "contract_start_date": "2018-07-01",
    "currency": "AUD",
    "current_reported_value": "31079358.05",
    "description": "Electricity Supply",
    "events": [
      {
        "absolute_change": "8713142.80",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-dd52575501a319421019d21cd7505cb0-32542737f4d6377d982aef6b704ddfd3",
        "after_source_hash": "d689867d25da0441cc0162f6ceb15335dd2dbb2440b62a6b23dca8fcef041617",
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        "contract_id": "CN3518711",
        "detected_at": "2025-07-25T00:37:26Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "bc11b988dd73aa207194d8d1a893f634e5938a002cc116b5273e0d688c8e554b",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "12891211.00",
        "notice_id": "CN3518711-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/d0aad6ae-f35f-4856-9c04-7d2dbd5826fe",
        "old_value": "4178068.20",
        "percentage_change": "208.54",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "summary": "Reported contract value increased by $8,713,142.80 (+208.54%)."
      },
      {
        "absolute_change": "-10103937.00",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-dd52575501a319421019d21cd7505cb0-7ec6b5d0b3253f88b6cb8cf861fc6357",
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        "contract_id": "CN3518711",
        "detected_at": "2025-07-25T00:37:26Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "8bbf5e4246bdcd19b4592a3c7d5dcf8484774f69461c9aa10443cf41ac572cc0",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "2787274.00",
        "notice_id": "CN3518711-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/554e2d73-9059-4a12-b470-555040330da5",
        "old_value": "12891211.00",
        "percentage_change": "-78.38",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "summary": "Reported contract value decreased by $10,103,937.00 (-78.38%)."
      },
      {
        "absolute_change": "12891211.00",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-dd52575501a319421019d21cd7505cb0-bf9170979c6137f78c76fea99bf8d95c",
        "after_source_hash": "8086a2b9316e391942bd9da75fbced47744f180b81cd2f5b980a8dc14be15650",
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        "before_source_hash": "e158b3701e18d8c5aac84263cf24b72a171a71eb829319307a50b555bb3fe5d7",
        "contract_id": "CN3518711",
        "detected_at": "2025-07-25T00:37:26Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "6a0453d9b7dfb45ecc062f94b1147b480b8d46cac3937918556ec82116640401",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "15678485.00",
        "notice_id": "CN3518711-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/bf391904-c9ad-4fdf-aab7-9228acddf4aa",
        "old_value": "2787274.00",
        "percentage_change": "462.50",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "summary": "Reported contract value increased by $12,891,211.00 (+462.50%)."
      },
      {
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-dd52575501a319421019d21cd7505cb0-cfecd49073193df6b2e0cbb083dad798",
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        "detected_at": "2025-07-25T00:37:26Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "66515bbeca42e75e8783c5472c0f7a5a86f5298b75ae64bc2f2d97d0f790ec12",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "17529358.05",
        "notice_id": "CN3518711-A4",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/4e811a59-fdbb-4b67-889c-b3529c58dabd",
        "old_value": "15678485.00",
        "percentage_change": "11.81",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "summary": "Reported contract value increased by $1,850,873.05 (+11.81%)."
      },
      {
        "absolute_change": "6300000.00",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-dd52575501a319421019d21cd7505cb0-8af2b1431c87303f9452302ffa4712ba",
        "after_source_hash": "f8b07eb01d02ec8b48ffb76f2b77d88a2a251aed23a36ea878283f6d3d50d85a",
        "before_release_id": "prod-dd52575501a319421019d21cd7505cb0-cfecd49073193df6b2e0cbb083dad798",
        "before_source_hash": "cb3ccd43e492a901300d395b5b85e3729725cb47bb7b4ab55079e3b687ab8544",
        "contract_id": "CN3518711",
        "detected_at": "2025-07-25T00:37:26Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "466b9ee2cee4bb2a066211a602dab76970e0f6f4479a8f218d4531cea926c661",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "23829358.05",
        "notice_id": "CN3518711-A5",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/e060803f-1752-4084-83ea-bf4fd7fb5d5c",
        "old_value": "17529358.05",
        "percentage_change": "35.94",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "summary": "Reported contract value increased by $6,300,000.00 (+35.94%)."
      },
      {
        "absolute_change": "7250000.00",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-dd52575501a319421019d21cd7505cb0-ec608711fc873980a413f5e43c4a6464",
        "after_source_hash": "a7560f16be6711f4880226d0088122872cbd1a354fa358f23af59f514579cea1",
        "before_release_id": "prod-dd52575501a319421019d21cd7505cb0-8af2b1431c87303f9452302ffa4712ba",
        "before_source_hash": "f8b07eb01d02ec8b48ffb76f2b77d88a2a251aed23a36ea878283f6d3d50d85a",
        "contract_id": "CN3518711",
        "detected_at": "2025-07-25T00:37:26Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "cca5fdb1496a79627cc105d01678d3dd1af066a26f529dd3f766e230341a2657",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "31079358.05",
        "notice_id": "CN3518711-A6",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/7713a9a6-0286-48d6-93fd-bf28814c50f5",
        "old_value": "23829358.05",
        "percentage_change": "30.42",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "summary": "Reported contract value increased by $7,250,000.00 (+30.42%)."
      }
    ],
    "evidence_path": "evidence/CN3518711.json",
    "latest_modified_at": "2025-07-25T00:37:26Z",
    "notice_id": "CN3518711-A6",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/7713a9a6-0286-48d6-93fd-bf28814c50f5",
    "original_reported_value": "4178068.20",
    "procurement_method": "Limited tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
    "supplier_name": "Perth Energy",
    "title": null,
    "value_change": "26901289.85",
    "value_change_percentage": "643.87",
    "versions": [
      {
        "agency_name": "CSIRO",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "supplier_name": "Perth Energy",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
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      {
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "supplier_name": "Perth Energy",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "supplier_name": "Perth Energy",
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      {
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "supplier_name": "Perth Energy",
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      },
      {
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3518711",
        "supplier_name": "Perth Energy",
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    ]
  },
  "disclaimer": "ContractDelta identifies changes in publicly reported procurement records. A change is not evidence of misconduct. Contract amendments can result from legitimate changes in scope, timing, pricing, reporting, or data correction.",
  "generated_at": "2026-07-17T05:22:06Z",
  "schema_version": "1.0",
  "source": {
    "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
    "coverage": {
      "amended_contracts_discovered": 851,
      "amended_contracts_selected": 20,
      "amended_contracts_skipped": 831,
      "max_amended_contracts": 20,
      "mode": "bounded_amendments",
      "query_end": "2026-07-20T23:59:59.999999Z",
      "query_start": "2026-07-12T00:00:00Z",
      "selection_method": "Explicit amendment contracts were ranked by current reported value, then source modification time and contract ID. Only the highest-ranked bounded set was processed."
    },
    "license": "https://creativecommons.org/licenses/by/3.0/au/",
    "name": "AusTender OCDS API",
    "publisher": "Australian Government Department of Finance"
  }
}