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FileContentsSource
wcsb_balance_monthly.csvMonthly S&D balance: supply, diluent, Alberta use, removals, maintenance offline, implied storage change.AER ST3/ST39/ST53 via the model
wcsb_grades_monthly.csvMonthly supply by grade: SCO, marketable bitumen (dilbit), sent for further processing, grade total.Model grade layer
wcsb_project_leaves_monthly.csvMonthly production by project leaf (ST53 schemes, ST39 plants and upgraders).AER ST53/ST39 via the model
wcsb_maintenance_calendar.csvForward maintenance calendar, Oct 2026 to Sep 2027: confirmed vs pattern-indicated, kb/d impacts.annotations/maintenance_forward.yaml (compiled 2026-09-22)
venezuela_imports_weekly.csvWeekly US imports of Venezuelan crude, kb/d.EIA WPSR Table 8 (EIA API v2)
us_crude_exports_weekly.csvWeekly US crude exports, kb/d.EIA Weekly Petroleum Status Report (EIA API v2)
us_crude_exports_monthly.csvMonthly US crude exports, kb/d.EIA Petroleum Supply Monthly (EIA API v2)
venezuela_production_monthly.csvVenezuelan crude production: OPEC secondary sources vs direct communication, kb/d.OPEC Monthly Oil Market Report
merey_pricing.csvReported Merey outright prices and Brent differentials.Reported assessments (see Sources)
venezuela_freight_rates.csvAframax Jose-to-USGC lump sums and $/bbl equivalents.Reported fixtures (see Sources)

AER ST3/ST53 actuals through 2026-07 (ST39 through 2026-05), pulled 2026-09-22; Aug-Sep 2026 nowcast estimated, built 2026-09-23; forecast built 2026-09-22. Months run 2025-08 to 2027-09; band is act (AER actuals), nc (model nowcast), or fc (model forecast). Blank cells are unpublished months, not zeros.

Sources

Sources
PublisherDatasetURLPublishedVintage / coverageRetrieved
Alberta Energy RegulatorST3: Alberta Energy Resource Industries Monthly Statisticshttps://www.aer.ca/data-and-performance/data-and-publications/statistical-reports/st3MonthlyActuals through 2026-07 (latest file vintage 2026-08-27)2026-09-22
Alberta Energy RegulatorST53: In-situ project data (BITUMEN sheet)https://www.aer.ca/data-and-performance/data-and-publications/statistical-reports/st53MonthlyActuals through 2026-072026-09-22
Alberta Energy RegulatorST39: Mine and upgrader facility dataURL not recorded in repoMonthlyActuals through 2026-052026-09-22
Canada Energy RegulatorPipeline throughput, capacity and apportionment (open data)https://www.cer-rec.gc.ca/open/energy/throughput-capacity/Monthly, ~3-month lagJan 2018 to Jun 20262026-09-22
Company disclosuresQuarterlies, budget releases, investor presentations, earnings callsURLs per record in annotations/maintenance_forward.yamlAs publishedForward maintenance calendar window 2026-10-01 to 2027-09-30, compiled 2026-09-222026-09-22
Heavy Reading modelWCSB S&D dashboard build (21 granular leaves, grade layer, maintenance math)No public URL (repo build)Per buildForecast built 2026-09-22; Aug-Sep 2026 nowcast built 2026-09-232026-09-23

Every number on this page traces to a row above. Anything missing its own source line is flagged in place; nothing ships with an unsourced number.

Heavy Reading · the WCSB supply letter.
Public information only: AER ST3/ST39/ST53 and company disclosures via the WCSB S&D model. Nothing here is licensed data, so this page renders the same with or without ?public=1.