Superior Refinery

A 49,000 barrels per calendar day petroleum refinery in Wisconsin, US, operated by Cenovus Energy.

Record

Rated capacity

49,000 bpd (atmospheric crude distillation, calendar day)

Status

Operating

Operator

Cenovus Energy

Supplier graph

bomforge.com/companies/cenovus-energy

Coordinates

37.4377, -96.9723

What coverage reports

403 days since one was reported

Agency that investigated the Superior refinery explosion faces elimination under Trump
2025-07-14 · 1 publisher filed it

0 reported in 12 months

2024-092026-08

stories filed per month · red = a disruption

These are counts of what publishers filed about this plant, not an operating status. A quiet month means nobody named this facility that month, which is a fact about coverage and not about the plant. Where this site states how a refinery is running it says so in the facts table above, from the curated dataset, and cites it there.

Wire

1. 4 Jun 2026 General Critical
   Superior refinery shuts down unit that removes harmful emissions
   WPR · matched superior
2. 5 Jan 2026 General Low
   Celebrating 75 years of the Superior Refinery
   cenovus.com · matched superior
3. 29 Sep 2025 General Low
   Superior refinery accused of dozens of air pollution violations
   superiortelegram.com · matched superior
4. 14 Jul 2025 Incident Critical
   Agency that investigated the Superior refinery explosion faces elimination under Trump
   WPR · matched superior
5. 3 Jul 2025 Incident Critical
   Bygones: Superior refinery explosion injured 3 in 1975
   Duluth News Tribune · matched superior
6. 24 Mar 2025 General Low
   Curlers raise money to feed hungry kids at the 2025 Cenovus Energy
   WDIO News · matched superior
7. 5 Mar 2024 Incident High
   Superior Refinery update, nearly six years after the fire that closed them down
   wdio.com · matched superior
8. 9 Nov 2023 Incident Critical
   Chemical Safety Board Shares Video of Superior Refinery Explosion
   Powder & Bulk Solids · matched superior
9. 27 Oct 2023 General Low
   Northwood Tech Celebrates New Mobile Welding Lab Generator Purchased With Donations From Cenovus Superior Refinery And Enbridge Energy
   DrydenWire.com · matched superior
10. 24 Aug 2023 Incident High
    Superior Fire responds to fuel oil release at Cenovus Superior Refinery
    WDIO News · matched superior
11. 23 Aug 2023 Incident Critical
    Propane leak at Superior refinery, site of a 2018 explosion, sets off emergency response
    Star Tribune · matched superior
12. 31 Jul 2023 Operations Low
    Superior refinery still hasn’t resumed full operations
    WPR · matched superior
13. 12 Jun 2023 Incident Critical
    Safety video on Husky Superior Refinery explosion released by US Chemical Safety Board
    HazardEx · matched superior
14. 10 Jun 2023 Incident Critical
    Federal agency releases new video detailing Superior refinery explosion, fire
    Duluth News Tribune · matched superior
15. 9 Jun 2023 Incident Critical
    Transient Hazards: Explosion at the Husky Superior Refinery - Safety Videos
    csb.gov + 2 other outlets · matched superior
16. 26 Apr 2023 Incident Critical
    5 years after explosion and fire, Superior refinery restarts
    Duluth News Tribune · matched superior
17. 16 Jan 2023 Incident Critical
    CSB identifies six key safety issues that led to 2018 Superior refinery explosion
    The Chemical Engineer · matched superior
18. 6 Jan 2023 Incident Critical
    Final report into 2018 Husky Superior Refinery explosion released
    HazardEx · matched superior
19. 5 Jan 2023 Incident Critical
    Superior refinery explosion caused by lack of safeguards, feds say
    kare11.com · matched superior
20. 4 Jan 2023 Incident Critical
    'This accident could have been avoided': Years later, federal agency releases findings on Superior refinery explosion
    WPR · matched superior
21. 4 Jan 2023 Incident Critical
    Lack of safeguards led to Superior refinery explosion, U.S. regulators say
    CBC + 1 other outlet · matched superior
22. 29 Dec 2022 Incident Critical
    Federal agency releases final report on Superior refinery explosion, over 4 years later
    Duluth News Tribune · matched superior
23. 29 Dec 2022 Incident Critical
    'Could have been prevented' Husky Superior Refinery explosion report released
    Northern News Now · matched superior
24. 8 Nov 2022 General Low
    Investing where we live, work and play at the Cenovus Superior Refinery
    Cenovus Energy · matched superior
25. 28 Apr 2022 General Low
    Labor, supply chain issues drive Superior refinery rebuild to $1.2 billion
    Duluth News Tribune · matched superior
26. 30 Nov 2021 Incident Critical
    Superior Refinery Explosion $1.05M Class Action Settlement
    Top Class Actions · matched superior
27. 29 Oct 2021 Incident Low
    Superior refinery investigation release expected in next year
    Duluth News Tribune · matched superior
28. 8 Jul 2021 Incident Critical
    Parties agree on $1 million settlement in Superior refinery explosion class-action lawsuit
    Duluth News Tribune · matched superior
29. 28 Oct 2020 Expansion Low
    Superior refinery rebuild continues amid Husky merger
    Star Tribune · matched superior
30. 3 Aug 2020 Incident Critical
    Workers’ Lawsuit Over Superior Refinery Explosion Moves Forward
    WPR · matched superior
31. 24 Mar 2020 General Critical
    Husky suspends work on Superior refinery, cites COVID-19 concerns
    Duluth News Tribune · matched superior
32. 24 Mar 2020 General Critical
    Husky Energy halts $750 million project to rebuild Superior refinery
    Star Tribune · matched superior
33. 1 Mar 2020 General Low
    Superior refinery rebuild costs nearly double
    Superior Telegram · matched superior
34. 21 Feb 2020 General High
    Superior Refinery Evacuated Over Concerns Of Tower Collapse
    WPR · matched superior
35. 20 Feb 2020 General High
    Superior refinery evacuated amid concerns that tower might fall
    MPR News · matched superior
36. 30 Sep 2019 General Low
    Husky Given Green Light To Rebuild Superior Refinery
    WPR · matched superior
37. 30 Sep 2019 General Low
    Husky receives approval to begin Superior refinery rebuild
    WXOW · matched superior
38. 30 Aug 2019 General Low
    Husky says Superior refinery rebuild to begin in 2019 fall
    BOE Report · matched superior
39. 3 Apr 2019 General Low
    Husky Energy Says It Will Keep Using Hydrogen Fluoride At Superior Refinery
    WPR · matched superior
40. 3 Apr 2019 General Low
    Husky Energy to spend more than $400M to rebuild Superior refinery
    The Daily Reporter · matched superior
41. 26 Feb 2019 General Low
    Water Sampling Shows Low Levels Of Petroleum, Firefighting Foam In And Around Superior Refinery
    WPR · matched superior
42. 12 Dec 2018 Incident Critical
    Hole in valve determined as cause for Superior refinery explosion
    fox9.com + 1 other outlet · matched superior
43. 3 Oct 2018 Incident Critical
    OSHA issues fine in Superior refinery explosion, fire
    The Daily Reporter · matched superior
44. 8 Sep 2018 Incident Critical
    Contract workers sue over Superior refinery explosion
    WQOW · matched superior
45. 2 Aug 2018 Incident Critical
    CSB issues video, factual update of Husky Superior refinery explosion
    C&EN · matched superior
46. 2 Aug 2018 Incident Critical
    Chemical Safety Board Suspects Faulty Valve Led To Superior Refinery Explosion
    WPR · matched superior
47. 2 Aug 2018 Incident Critical
    Agency: Superior refinery fire caused by blast debris hitting tank
    FOX6 News Milwaukee · matched superior
48. 5 Jun 2018 Incident High
    5 Lessons Of Loss And Resilience After Superior Refinery Fire
    WPR · matched superior
49. 4 Jun 2018 Incident High
    Five lessons of loss and resilience after Superior refinery fire
    MPR News · matched superior
50. 11 May 2018 Incident High
    In Worst-Case Scenario, Chemical Release At Superior Refinery Would Double Evacuation Area
    WPR · matched superior
51. 6 May 2018 Incident High
    Superior refinery fire is reminder of toxic hydrogen fluoride risk in Twin Cities
    Star Tribune · matched superior
52. 1 May 2018 Incident Critical
    Superior refinery explosion leads officials to weigh switch to safer chemical
    Pioneer Press · matched superior
53. 1 May 2018 Incident Critical
    Safety Board: Superior Refinery Explosion Happened In Fluid Catalytic Cracking Unit
    WPR · matched superior
54. 1 May 2018 Incident Critical
    Feds to probe metal strength in Superior refinery blast
    MPR News · matched superior
55. 30 Apr 2018 General Low
    Air, Water Monitoring Continue After Superior Refinery Blasts
    WPR · matched superior
56. 29 Apr 2018 Incident Critical
    Chemical raises concerns in wake of Superior refinery explosion, fire
    MPR News · matched superior
57. 29 Apr 2018 General High
    Gov. Scott Walker to tour Superior refinery on Monday in wake of explosions and fires
    Milwaukee Journal Sentinel · matched superior
58. 28 Apr 2018 Incident High
    Officials: 13 people injured in Superior refinery fire
    kare11.com · matched superior
59. 27 Apr 2018 Incident Critical
    Smoke from Superior refinery explosion poses health risk
    MPR News · matched superior
60. 27 Apr 2018 General High
    No oil or asphalt from Superior refinery overflowed to waterways in wake of explosions and fires
    Milwaukee Journal Sentinel · matched superior

8 older records held in the corpus. Every item names this facility by city or plant name in its headline or summary. Operator-only mentions never attribute. Headlines and links belong to the publishers named.