MPC · 8-K · 20260804PR000060
MPLX Natural Gas NGL Expansion
Marathon Petroleum Corp · 2026-08-04 · Importance 31 · Surprise 42 · In source text
MPLX plans to direct more than 90% of organic growth capital toward natural-gas and NGL infrastructure needs in the Permian and Marcellus basins. Secretariat I, a 200 MMcf/d Delaware Basin gas-processing plant, entered service in April 2026. Harmon Creek III is scheduled to begin operations in August 2026 with 300 MMcf/d of gas-processing capacity and a 40 thousand-barrel-per-day de-ethanizer. The Gulf Coast Fractionators project includes two 150 thousand-barrel-per-day facilities, and the Gulf Coast LPG Export Terminal JV includes a 400 thousand-barrel-per-day terminal with MPLX owning 50%.
Key facts
- MPLX is increasing its 2026 growth capital spending outlook by $500 million, to $2.9 billion source
- Harmon Creek III: 300 MMcf/d gas processing plant and 40 mbpd de-ethanizer in the Marcellus, 100% MPLX ownership, beginning operations in August 2026 source
- Bay Runner and Bay Runner Twin Pipelines: up to 5.3 Bcf/d natural gas transport capacity between Agua Dulce and Brownsville, Texas, 30% MPLX ownership; Bay Runner in-service 3Q26, Bay Runner Twin in-service 2029 source
- Titan Complex increasing sour gas treating capacity from 150 MMcf/d to over 400 MMcf/d in the Delaware Basin, 100% MPLX ownership, expected in-service 4Q26 source
- BANGL Pipeline expanding NGL pipeline from 250 mbpd to 300 mbpd, 100% MPLX ownership, expected in-service 4Q26 source
- Blackcomb Pipeline: 2.5 Bcf/d pipeline connecting Permian supply to Agua Dulce, Texas, 34% MPLX ownership, expected in-service 4Q26; began commissioning July 2026 source
- Traverse Pipeline: 2.5 Bcf/d pipeline designed to transport natural gas between Agua Dulce and Katy, Texas, 34% MPLX ownership, expected in-service 2H27 source
- Two Gulf Coast Fractionators: two 150 mbpd fractionation facilities near MPC’s Galveston Bay refinery, 100% MPLX ownership; Frac I expected 2028, Frac II expected 2029 source
Impact estimates
| metric | direction | stage | expected | basis |
|---|---|---|---|---|
| assets | positive | committed | — | MPLX is increasing its 2026 growth capital spending outlook by $500 million, to $2.9 billion |
| cash | negative | committed | — | MPLX is increasing its 2026 growth capital spending outlook by $500 million, to $2.9 billion |
| revenue | positive | probable | — | Harmon Creek III: 300 MMcf/d gas processing plant and 40 mbpd de-ethanizer in the Marcellus, 100% MPLX ownership, beginning operations in… |
| revenue | positive | probable | — | Bay Runner and Bay Runner Twin Pipelines: up to 5.3 Bcf/d natural gas transport capacity between Agua Dulce and Brownsville, Texas, 30%… |
| revenue | positive | probable | — | Bay Runner and Bay Runner Twin Pipelines: up to 5.3 Bcf/d natural gas transport capacity between Agua Dulce and Brownsville, Texas, 30%… |
| revenue | positive | probable | — | Titan Complex increasing sour gas treating capacity from 150 MMcf/d to over 400 MMcf/d in the Delaware Basin, 100% MPLX ownership,… |
| revenue | positive | probable | — | BANGL Pipeline expanding NGL pipeline from 250 mbpd to 300 mbpd, 100% MPLX ownership, expected in-service 4Q26 |
| revenue | positive | probable | — | Blackcomb Pipeline: 2.5 Bcf/d pipeline connecting Permian supply to Agua Dulce, Texas, 34% MPLX ownership, expected in-service 4Q26; began… |
| revenue | positive | probable | — | Traverse Pipeline: 2.5 Bcf/d pipeline designed to transport natural gas between Agua Dulce and Katy, Texas, 34% MPLX ownership, expected… |
| revenue | positive | probable | — | Two Gulf Coast Fractionators: two 150 mbpd fractionation facilities near MPC’s Galveston Bay refinery, 100% MPLX ownership; Frac I… |
| revenue | positive | probable | — | Two Gulf Coast Fractionators: two 150 mbpd fractionation facilities near MPC’s Galveston Bay refinery, 100% MPLX ownership; Frac I… |
| revenue | positive | probable | — | Gulf Coast LPG Export Terminal JV: 400 mbpd LPG export terminal in the Port of Texas City, Texas, 50% MPLX ownership, expected in-service… |