MPLX (MPLX)
Moves and processes crude oil, refined products, natural gas, and NGLs.
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MPLX runs the pipes, processing plants, storage tanks and docks that move oil, fuel and natural gas between producers, refineries and buyers. Marathon Petroleum controls it and anchors much of its business, leaving the dependable old logistics network with a concentration risk. That mature base is funding a push into faster-growing gas routes and Gulf Coast export facilities.
Item facts: FY2025 · year ended Dec 31, 2025, from filings, earnings calls and company pages.
Judgment weights, not filed revenue
The band summarizes business focus and direction. ~ marks estimates.
7 in detail · 16 more below
Crude Oil and Products Logistics
Pipes, tanks, terminals, barges and fuel-delivery links around refineries form MPLX's biggest engine. Across the whole company, customers had $5.8 billion of contracted future payments lined up; refinery slowdowns and contract renewals are the watchpoints.
Competes with Refined Products Pipeline System (ONEOK) · Crude Oil and Refined Products networks (Enterprise Products Partners)
In plain English
The unglamorous backbone that pays for the expansion. MPLX moves crude oil into refineries, carries finished fuels out, stores both along the way and delivers fuel toward wholesale buyers.
It works much like a toll road with reserved lanes. Customers pay for each barrel moved or for capacity kept available. Marathon Petroleum supplied 88% of the money this logistics business brought in, which works out to about 48% of all the money MPLX brought in. Reserved-capacity agreements soften ordinary swings in volumes, but the business still depends heavily on that customer's refineries staying busy and renewing contracts.
Marcellus Operations
MPLX collects and cleans gas from the Marcellus region, then separates out saleable liquids. Harmon Creek III recently added room for 300 million cubic feet a day; limited routes out of the region can still cap growth.
Competes with Northeast G&P (Williams) · Gathering and compression network (Antero Midstream)
In plain English
Gas from a well is not ready for the main pipeline network. It arrives as a mixture, so MPLX gathers it through smaller pipes, cleans it and separates the pieces producers can sell.
Producers pay MPLX for every step because untreated gas cannot move easily toward buyers. The plants keep earning when nearby wells keep flowing and the pipes leaving the region have room. Two unnamed customers are meaningful, but neither supplied as much as fifteen percent of this gas division's revenue.
Utica Operations
This Ohio network performs the same gather-clean-separate job for gas rich in valuable liquids. It processes about one billion cubic feet daily; local drilling and enough room on outbound pipes decide how full it stays.
Competes with Natrium and Berne complexes (Blue Racer Midstream) · Northeast G&P (Williams)
In plain English
Ohio's Utica wells produce gas with plenty of liquids mixed in. MPLX collects that stream, runs it through plants that remove the liquids, then sends the dry gas and separated products toward different buyers.
The producer pays service fees along that path, while MPLX's pipes help keep the material inside its own network for more steps. The business grows when producers drill and complete more wells. If those customers slow down, or the onward pipelines become crowded, there is less material to handle and fewer fees to collect.
Southwest Operations
The Permian system gathers, cleans and processes gas that comes up alongside oil. The $2.4 billion Northwind purchase made sour-gas cleaning a bigger growth engine; drilling, permits and routes to market remain the watchpoints.
Competes with Permian Delaware G&P (Targa Resources) · Delaware Basin gas system (Kinetik)
In plain English
Out in the Permian, oil wells also bring up large amounts of gas, some needing extra cleaning. MPLX gathers that gas and passes it through treating and processing plants so it can enter long-distance pipes and its valuable liquids can be sold.
Northwind added dedicated acreage, pipe and cleaning equipment under customer agreements averaging fifteen years. Producers pay because they need somewhere reliable to send the gas that accompanies their oil. More drilling fills MPLX's plants, but plant permits and enough outbound pipe space must keep pace.
BANGL Pipeline
BANGL carries mixed gas liquids from Permian plants toward Gulf Coast buyers. MPLX now owns all of it and is expanding capacity to 300,000 barrels a day; plant output and room at the far end govern use.
Competes with Grand Prix and Delaware Express (Targa Resources) · Natural Gas Liquids network (Enterprise Products Partners)
In plain English
Picture a trunk road for the liquids separated from natural gas. BANGL gathers that mixed stream from many Permian processing plants and carries it southeast in one large pipe.
Shippers pay to move each barrel. MPLX bought the part it did not already own, so it now keeps the whole result and controls expansion. The pipeline also becomes the supply route for MPLX's planned Gulf Coast separation towers. Its earnings rise when upstream plants recover more liquids and downstream facilities have space to accept them.
Long-Haul Pipeline Growth Projects
Jointly owned long-distance lines carry dry gas left after processing toward coastal buyers. They can add fee income without MPLX footing every bill, but permits, partner spending and customer projects decide when cash arrives.
Competes with Gulf Coast Express (Kinder Morgan) · Hugh Brinson (Energy Transfer)
In plain English
Once valuable liquids are removed, the remaining natural gas still needs a highway out of the Permian. MPLX owns pieces of several very large pipelines aimed at coastal power and export customers.
Other owners share the construction bill, and MPLX receives its portion of profits and cash after a line opens. NextDecade, the customer behind the Rio Grande gas-export project, supports Bay Runner Twin; Devon has reserved room on Solitude. Those commitments matter because an unfinished destination or delayed permit can leave a completed route waiting for traffic.
Gulf Coast NGL Value Chain
Two new towers will separate mixed gas liquids, while a jointly owned dock will load the finished products for export. MPLX plans to invest about $2.5 billion; construction, marine permits and overseas demand come first.
Competes with NGL Transportation & Services (Targa Resources) · Nederland NGL export expansion (Energy Transfer)
In plain English
This is the missing last step in MPLX's Permian chain. BANGL will deliver a mixed stream of liquids removed from natural gas to the Gulf Coast, where tall vessels separate it into products buyers can use. A nearby dock will then load ships.
Marathon Petroleum is set to take output from the separation plants. ONEOK, MPLX's partner in the dock, will market half of its loading space. Each handoff can produce a fee, but none begins until the facilities are built, permitted and connected, and ships arrive wanting the products.
Crude Oil and Products LogisticsPipes, tanks, terminals, barges and fuel-delivery links around refineries form MPLX's biggest engine. Across the whole company, customers had $5.8 billion of contracted future payments lined up; refinery slowdowns and contract renewals are the watchpoints.Pipes, tanks, terminals, barges and fuel-delivery links around refineries form MPLX's biggest engine. Across the whole company, customers had $5.8 billion of contracted future payments lined up; refinery slowdowns and contract renewals are the watchpoints.
In plain English
The unglamorous backbone that pays for the expansion. MPLX moves crude oil into refineries, carries finished fuels out, stores both along the way and delivers fuel toward wholesale buyers.
It works much like a toll road with reserved lanes. Customers pay for each barrel moved or for capacity kept available. Marathon Petroleum supplied 88% of the money this logistics business brought in, which works out to about 48% of all the money MPLX brought in. Reserved-capacity agreements soften ordinary swings in volumes, but the business still depends heavily on that customer's refineries staying busy and renewing contracts.
Competes with Refined Products Pipeline System (ONEOK) · Crude Oil and Refined Products networks (Enterprise Products Partners)
Marcellus OperationsMPLX collects and cleans gas from the Marcellus region, then separates out saleable liquids. Harmon Creek III recently added room for 300 million cubic feet a day; limited routes out of the region can still cap growth.MPLX collects and cleans gas from the Marcellus region, then separates out saleable liquids. Harmon Creek III recently added room for 300 million cubic feet a day; limited routes out of the region can still cap growth.
In plain English
Gas from a well is not ready for the main pipeline network. It arrives as a mixture, so MPLX gathers it through smaller pipes, cleans it and separates the pieces producers can sell.
Producers pay MPLX for every step because untreated gas cannot move easily toward buyers. The plants keep earning when nearby wells keep flowing and the pipes leaving the region have room. Two unnamed customers are meaningful, but neither supplied as much as fifteen percent of this gas division's revenue.
Competes with Northeast G&P (Williams) · Gathering and compression network (Antero Midstream)
Utica OperationsThis Ohio network performs the same gather-clean-separate job for gas rich in valuable liquids. It processes about one billion cubic feet daily; local drilling and enough room on outbound pipes decide how full it stays.This Ohio network performs the same gather-clean-separate job for gas rich in valuable liquids. It processes about one billion cubic feet daily; local drilling and enough room on outbound pipes decide how full it stays.
In plain English
Ohio's Utica wells produce gas with plenty of liquids mixed in. MPLX collects that stream, runs it through plants that remove the liquids, then sends the dry gas and separated products toward different buyers.
The producer pays service fees along that path, while MPLX's pipes help keep the material inside its own network for more steps. The business grows when producers drill and complete more wells. If those customers slow down, or the onward pipelines become crowded, there is less material to handle and fewer fees to collect.
Competes with Natrium and Berne complexes (Blue Racer Midstream) · Northeast G&P (Williams)
Southwest OperationsThe Permian system gathers, cleans and processes gas that comes up alongside oil. The $2.4 billion Northwind purchase made sour-gas cleaning a bigger growth engine; drilling, permits and routes to market remain the watchpoints.The Permian system gathers, cleans and processes gas that comes up alongside oil. The $2.4 billion Northwind purchase made sour-gas cleaning a bigger growth engine; drilling, permits and routes to market remain the watchpoints.
In plain English
Out in the Permian, oil wells also bring up large amounts of gas, some needing extra cleaning. MPLX gathers that gas and passes it through treating and processing plants so it can enter long-distance pipes and its valuable liquids can be sold.
Northwind added dedicated acreage, pipe and cleaning equipment under customer agreements averaging fifteen years. Producers pay because they need somewhere reliable to send the gas that accompanies their oil. More drilling fills MPLX's plants, but plant permits and enough outbound pipe space must keep pace.
Competes with Permian Delaware G&P (Targa Resources) · Delaware Basin gas system (Kinetik)
BANGL PipelineBANGL carries mixed gas liquids from Permian plants toward Gulf Coast buyers. MPLX now owns all of it and is expanding capacity to 300,000 barrels a day; plant output and room at the far end govern use.BANGL carries mixed gas liquids from Permian plants toward Gulf Coast buyers. MPLX now owns all of it and is expanding capacity to 300,000 barrels a day; plant output and room at the far end govern use.
In plain English
Picture a trunk road for the liquids separated from natural gas. BANGL gathers that mixed stream from many Permian processing plants and carries it southeast in one large pipe.
Shippers pay to move each barrel. MPLX bought the part it did not already own, so it now keeps the whole result and controls expansion. The pipeline also becomes the supply route for MPLX's planned Gulf Coast separation towers. Its earnings rise when upstream plants recover more liquids and downstream facilities have space to accept them.
Competes with Grand Prix and Delaware Express (Targa Resources) · Natural Gas Liquids network (Enterprise Products Partners)
Long-Haul Pipeline Growth ProjectsJointly owned long-distance lines carry dry gas left after processing toward coastal buyers. They can add fee income without MPLX footing every bill, but permits, partner spending and customer projects decide when cash arrives.Jointly owned long-distance lines carry dry gas left after processing toward coastal buyers. They can add fee income without MPLX footing every bill, but permits, partner spending and customer projects decide when cash arrives.
In plain English
Once valuable liquids are removed, the remaining natural gas still needs a highway out of the Permian. MPLX owns pieces of several very large pipelines aimed at coastal power and export customers.
Other owners share the construction bill, and MPLX receives its portion of profits and cash after a line opens. NextDecade, the customer behind the Rio Grande gas-export project, supports Bay Runner Twin; Devon has reserved room on Solitude. Those commitments matter because an unfinished destination or delayed permit can leave a completed route waiting for traffic.
Competes with Gulf Coast Express (Kinder Morgan) · Hugh Brinson (Energy Transfer)
Gulf Coast NGL Value ChainTwo new towers will separate mixed gas liquids, while a jointly owned dock will load the finished products for export. MPLX plans to invest about $2.5 billion; construction, marine permits and overseas demand come first.Two new towers will separate mixed gas liquids, while a jointly owned dock will load the finished products for export. MPLX plans to invest about $2.5 billion; construction, marine permits and overseas demand come first.
In plain English
This is the missing last step in MPLX's Permian chain. BANGL will deliver a mixed stream of liquids removed from natural gas to the Gulf Coast, where tall vessels separate it into products buyers can use. A nearby dock will then load ships.
Marathon Petroleum is set to take output from the separation plants. ONEOK, MPLX's partner in the dock, will market half of its loading space. Each handoff can produce a fee, but none begins until the facilities are built, permitted and connected, and ships arrive wanting the products.
Competes with NGL Transportation & Services (Targa Resources) · Nederland NGL export expansion (Energy Transfer)
Named in filings, launches and programs
- Harmon Creek IIIService · RampingNew Marcellus processing and liquid-removal plant that began operating in August 2026.
- Secretariat I and Secretariat IIService · RampingOne Delaware gas plant opened in April 2026; its larger companion is planned for the second half of 2028.
- Titan ComplexService · RampingExpanding its Delaware gas-cleaning capacity to more than 400 million cubic feet a day.
- Northwind Delaware HoldingsBrandGas gathering and cleaning network bought in August 2025 to deepen the Permian business.
- Bay Runner and Bay Runner Twin PipelinesCustomer program · AnnouncedPlanned gas routes from Agua Dulce to Brownsville; Twin is backed by NextDecade's Rio Grande gas-export project.
- Blackcomb PipelineEcosystem · RampingPermian-to-Agua Dulce gas line that began commissioning in July 2026 and targets service late in the year.
- Traverse PipelineEcosystem · AnnouncedPlanned two-way gas route between Agua Dulce and Katy, targeted for the second half of 2027.
- Eiger Express PipelineEcosystem · AnnouncedPlanned Permian-to-Katy gas route targeted for the middle of 2028.
- Solitude Pipeline SystemEcosystem · AnnouncedTwo-stage Permian-to-Katy system backed by reserved Devon capacity, with first service planned for late 2029.
- MARA Integrated Power Generation and Data Center CampusesCustomer program · AnnouncedEarly-stage West Texas plan for MPLX gas supply and power service; firm contracts and approvals are still missing.
- Whiptail MidstreamBrandSan Juan and Four Corners oil-and-gas gathering assets acquired in March 2025.
- Inland MarineServiceBarges and towboats move mostly Marathon Petroleum crude and fuel under fixed payments for reserved space.
- Fuels DistributionServiceMarathon Petroleum-anchored wholesale fuel delivery with a large annual minimum volume commitment.
- Bakken OperationsServiceSmaller gathering and processing systems, plus interests in crude-oil pipelines.
- Southern Appalachia OperationsServiceSmaller natural-gas gathering and processing systems serving Southern Appalachia.
- MarEn Bakken Company / Bakken Pipeline SystemEcosystemJointly owned route that gives MPLX a small stake in the Dakota Access and Bakken system.
Harmon Creek IIIService · Ramping
New Marcellus processing and liquid-removal plant that began operating in August 2026.
Secretariat I and Secretariat IIService · Ramping
One Delaware gas plant opened in April 2026; its larger companion is planned for the second half of 2028.
Titan ComplexService · Ramping
Expanding its Delaware gas-cleaning capacity to more than 400 million cubic feet a day.
Northwind Delaware HoldingsBrand
Gas gathering and cleaning network bought in August 2025 to deepen the Permian business.
Bay Runner and Bay Runner Twin PipelinesCustomer program · Announced
Planned gas routes from Agua Dulce to Brownsville; Twin is backed by NextDecade's Rio Grande gas-export project.
Blackcomb PipelineEcosystem · Ramping
Permian-to-Agua Dulce gas line that began commissioning in July 2026 and targets service late in the year.
Traverse PipelineEcosystem · Announced
Planned two-way gas route between Agua Dulce and Katy, targeted for the second half of 2027.
Eiger Express PipelineEcosystem · Announced
Planned Permian-to-Katy gas route targeted for the middle of 2028.
Solitude Pipeline SystemEcosystem · Announced
Two-stage Permian-to-Katy system backed by reserved Devon capacity, with first service planned for late 2029.
MARA Integrated Power Generation and Data Center CampusesCustomer program · Announced
Early-stage West Texas plan for MPLX gas supply and power service; firm contracts and approvals are still missing.
Whiptail MidstreamBrand
San Juan and Four Corners oil-and-gas gathering assets acquired in March 2025.
Inland MarineService
Barges and towboats move mostly Marathon Petroleum crude and fuel under fixed payments for reserved space.
Fuels DistributionService
Marathon Petroleum-anchored wholesale fuel delivery with a large annual minimum volume commitment.
Bakken OperationsService
Smaller gathering and processing systems, plus interests in crude-oil pipelines.
Southern Appalachia OperationsService
Smaller natural-gas gathering and processing systems serving Southern Appalachia.
MarEn Bakken Company / Bakken Pipeline SystemEcosystem
Jointly owned route that gives MPLX a small stake in the Dakota Access and Bakken system.