Supply Explorer
Fuels refinery

Cenovus Superior Refinery

Superior Refining Company LLC · Cenovus Energy Inc. · Superior, WI

Operating PADD2 asphalt
Aerial view of the site Imagery: USDA, USGS The National Map (public domain)
bpd crude capacity · EIA 2026
49,547
pipelines it injects into
1
delivery points reachable
34
terminals on those points
49
events on record
4

Capability

Crude distillation 49,547 bpd operable, 49,547 operating (EIA-820, as of 2026-01-01). Downstream units below, barrels per calendar day.

Conversion — makes gasoline and diesel from heavier oil

Catalytic cracking (FCC) 10,050

Upgrading

Catalytic reforming — low pressure 7,450
Vacuum distillation 29,100 sd

Treating — meets sulfur specs

Hydrotreating — diesel 7,500 sd
Hydrotreating — kerosene & jet 8,000 sd
Hydrotreating — gasoline 12,500 sd
Hydrotreating — naphtha / reformer feed 12,500 sd

Production capacity

Alkylates · 1,700 Aromatics · 6,100 Asphalt road oil · 20,000 Sulfur short tons day · 37

Crude slate

Not independently detailed in sources found this session.

Crude in & products out

From refinery research; each row links its source.
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DirectionModeRoutePoint / originProductsSource
crude in pipeline Enbridge Mainline (Lakehead System)
Superior, WI is a well-documented major terminus/hub of Enbridge's Lakehead Mainline System; this is treated as supported on strong general industry knowledge (also corroborated across the other Great Lakes-region refineries reviewed in this batch), though a dedicated citation specific to this refinery's current intake was not retrieved within the search budget.		 Superior, WI Enbridge terminal (Lakehead System origin) crude inferred
products out other unspecified
Cenovus's SEC filing describes its U.S. Manufacturing segment (which includes Superior) as refining crude oil to produce gasoline, diesel, jet fuel, asphalt and other products, but does not name specific outbound pipelines for Superior individually.		 gasoline diesel jet fuel asphalt source

Pipeline reach

Where this refinery’s product can go by published tariff route from the points it injects at — what an outage here would touch.
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PipelineInjects atDelivery pointsTerminalsLowest ¢/bblMedian ¢/bbl
Magellan Midstream
Superior, WI
34 49 121.87 407.64

Substitutes

Other refineries injecting into the same pipelines — the supply that could backfill an outage here.

Magellan Midstream

Events

Outages, fires, turnarounds, sales and closures — newest first.
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  1. 2025-09 outage

    Wisconsin DNR alleges more than two dozen violations of state air-pollution-control laws at the refinery; a regulatory enforcement matter, not a physical production outage. source

  2. 2023-06 turnaround

    Refinery reached full operations after a five-year, $1.2 billion rebuild following the 2018 explosion. source

  3. 2023-03 turnaround

    Restart of the rebuilt refinery began, ramping to about half capacity by late April 2023. source

  4. 2018-04-26 fire

    Major explosion and fire during a maintenance shutdown; an asphalt storage tank breach spilled approximately 17,000 barrels which caught fire; about three dozen workers injured and roughly 2,500 residents evacuated over hydrofluoric-acid leak fears; refinery shut down for a multi-year rebuild. source

Rates are pipeline line-haul transcribed from published FERC tariffs; every figure cites its tariff and item. Cost to serve (netback) adds origin spot price and destination fees. "Confirmed" links match a tariff delivery point to the facility; "same city" means the point is in the facility's city — plausible, not proof; "per research" means the facility's research profile names the pipeline as an outlet.