Two major natural gas infrastructure projects in Texas are moving forward as part of a multi-billion-dollar capital program aimed at expanding processing and fractionation capacity tied to rising production from the Permian Basin. The developments include the Zeus Gas Plant in West Texas and a new fractionator in Robstown on the Gulf Coast, both expected to enter service in 2028.
Phillips 66 is advancing the projects as part of its broader midstream strategy to expand system capacity across the Permian-to-Gulf Coast value chain.
The projects, announced Monday, May 18, 2026 include the Zeus Gas Plant in the Permian Basin and a third fractionator at the company’s Coastal Bend complex in Robstown, Texas. Both developments are expected to enter service in 2028.
The Zeus project will add a 300 million cubic feet per day (MMcf/d) gas processing facility designed to handle rising associated gas volumes from Permian oil production. The development also includes the new Midland Express Pipeline, a roughly 45-mile, 20-inch pipeline that will connect Phillips 66’s existing Permian gathering systems.
According to the company, the pipeline will initially transport up to 230 MMcf/d of wellhead gas while also providing future bi-directional flexibility between multiple processing facilities in the basin.
Meanwhile, the company’s third Coastal Bend Fractionator in Robstown will add 100,000 barrels per day of natural gas liquids fractionation capacity. The project also includes expansions to NGL purity pipelines and new water treatment infrastructure supporting operations at the site.
The projects form part of Phillips 66’s broader effort to expand its integrated “wellhead-to-market” midstream network as production in the Permian Basin continues to grow. Additionally, by increasing processing and fractionation capacity, the company aims to move larger volumes of natural gas and NGLs from West Texas production areas to Gulf Coast market hubs and export infrastructure.
Texas midstream investment rises with Permian output
The expansion comes as midstream operators across Texas continue investing in gas handling and NGL infrastructure to accommodate rising Permian output, particularly associated gas generated from oil-focused drilling.
Phillips 66 said the projects are already included within its existing capital spending program. Which ranges between $2 billion and $2.5 billion annually. The company also said the investments align with its broader financial goals, including reducing debt to $17 billion by the end of 2027 while continuing shareholder returns.
Company executives also said the new facilities are intended to improve system connectivity across Phillips 66’s midstream network and support growing customer production volumes tied to dedicated acreage positions in the Permian Basin.
Additionally, the Texas midstream expansion comes amid a broader wave of infrastructure development tied to rising energy and power demand across the United States. In Idaho, CalEthos and TerraVolt are also advancing a large-scale AI data center campus backed by firm natural gas supply for an onsite power plant supporting a 200–240MW buildout, highlighting how gas and power infrastructure is increasingly underpinning both industrial and digital growth projects.
Factsheet: Zeus Gas Plant & Coastal Bend Fractionator
- Developer: Phillips 66
- Announcement Date: May 18, 2026
- Projects: Zeus Gas Plant and Third Coastal Bend Fractionator
- Sector: Midstream Energy Infrastructure
Zeus Gas Plant
- Location: Permian Basin, Texas
- Type: Natural gas processing facility
- Processing Capacity: 300 MMcf/d
- Associated Infrastructure: Midland Express (MEX) Pipeline
- Pipeline Length: Approximately 45 miles
- Pipeline Size: 20-inch diameter
- Pipeline Capacity: Up to 230 MMcf/d
- Purpose: Connect Phillips 66 Permian gathering systems and move wellhead gas between processing facilities
Third Coastal Bend Fractionator
- Location: Robstown, Texas
- Type: Natural gas liquids (NGL) fractionator
- Fractionation Capacity: 100,000 barrels per day (100 MBD)
- Additional Infrastructure:
- NGL purity pipeline expansion
- Water treatment facilities
Timeline
- Expected Online Date: 2028
Strategic Focus
- Expand Permian gas processing capacity
- Increase Gulf Coast NGL fractionation capability
- Support rising Permian production volumes
- Strengthen integrated “wellhead-to-market” midstream network
Capital Program
- Included within Phillips 66’s annual capital spending range of $2.0 billion to $2.5 billion
- Supports company target to reduce debt to $17 billion by year-end 2027
