US Pipeline Builds Surge Again-but Resistance Grows
- 01. Current major US pipeline expansion projects
- 02. Why pipeline capacity is expanding now
- 03. Key pipeline corridors and regions
- 04. Notable active pipeline projects
- 05. Selected pipeline projects at a glance
- 06. Near-term capacity buildout pipeline
- 07. Opposition and local pushback patterns
- 08. Environmental and regulatory factors
- 09. Case study: Bridger Pipeline expansion
- 10. Technology and design trends shaping expansions
- 11. Investment and economic implications
Current major US pipeline expansion projects
At least 12 major natural gas pipeline expansions are under construction or nearing completion in 2026, representing the largest US pipeline buildout since the 2008 shale boom, with combined new capacity approaching 18 billion cubic feet per day (Bcf/d). These projects cluster in the South Central region, especially along the Gulf Coast, where rapidly growing liquefied natural gas (LNG) exports, data-center power demand, and Permian Basin gas production are driving record infrastructure investment.
Why pipeline capacity is expanding now
US gas demand growth has re-accelerated since 2021, driven by LNG plants on the Gulf of Mexico, industrial hydrogen projects, and a surge in data-center electricity use, all of which rely heavily on natural gas-fired power. Analysts at Morningstar DBRS estimate that LNG and gas-intensive industries could require up to 12% more pipeline capacity by 2027 compared with 2023 levels, pushing operators to expand both intrastate gathering lines and interstate transmission corridors.
In parallel, the Trump administration has streamlined the federal permitting process for energy infrastructure projects, shortening timelines for key approvals and making it easier for companies to secure rights-of-way across federal lands and waterways. This policy backdrop, combined with long-term shipper contracts to LNG exporters and industrial users, has turned previously stalled proposals-such as portions of the Mountain Valley and Southeast expansions-into shovel-ready projects.
Key pipeline corridors and regions
The heaviest pipeline expansion activity stretches from West Texas into Louisiana and beyond, where multiple Permian-to-Gulf pipelines are adding compression and lateral loops to boost take-away capacity. For example, Gulf South, Texas Eastern, and other FERC-jurisdictional systems have pending projects that would add roughly 1.8-2.3 Bcf/d of additional capacity to serve Gulf Coast LNG terminals by 2027.
Elsewhere, the Haynesville shale footprint in northern Louisiana and eastern Texas is seeing a cluster of intrastate systems, including Louisiana Energy Gateway and New Generation Gas Gathering, which together added 3.5 Bcf/d of capacity in 2025. These gathering lines move gas from the Haynesville sweet spots into hubs such as Gillis, where interstate pipelines can then deliver it to markets in the Southeast and beyond.
Notable active pipeline projects
In the Permian Basin, Gulf Coast Express Pipeline is upgrading its system with the GCX Expansion Project, which will increase firm deliveries of natural gas by about 570 million cubic feet per day (MMcf/d) from West Texas to South Texas markets by late 2026. Kinder Morgan's Trident Intrastate Pipeline-a 219-mile, 2 Bcf/d corridor from Katy, Texas, to the Port Arthur industrial complex-has been under construction since 2025 and is expected to be fully operational by mid-2027.
On the interstate side, Texas Eastern Transmission's Appalachia to Market III Project will add 2 Bcf/d of capacity from Marcellus/Utica supply basins into Mid-Atlantic load centers, with work scheduled to conclude in 2027. Meanwhile, Sabine Crossing, LLC's Sabine Crossing Pipeline Project will create a 270-mile connection between Texas and Louisiana, adding 55.6 Bcf/d of annual takeaway capacity and directly feeding LNG export facilities on the Gulf Coast.
Selected pipeline projects at a glance
| Project name | Operator | Region | Addition (Bcf/d or MMcf/d) | Target in-service date |
|---|---|---|---|---|
| GCX Expansion Project | Gulf Coast Express Pipeline LLC | West Texas to South Texas | 570 MMcf/d | Q4 2026 |
| Trident Intrastate Pipeline | Kinder Morgan | Katy, TX to Port Arthur, TX | 2 Bcf/d | Q2 2027 |
| Appalachia to Market III | Texas Eastern Transmission, LP | PA/DE corridor | 2 Bcf/d | 2027 |
| Sabine Crossing Pipeline Project | Sabine Crossing, LLC | TX-LA | 55.6 Bcf/yr | 2027 |
| Louisiana Energy Gateway | Intrastate operator (Haynesville) | North LA to Gillis Hub | 1.8 Bcf/d | Q4 2025 |
These figures illustrate how the industry is concentrating new capacity in regions with the strongest demand growth, particularly around LNG export hubs and industrial load centers. Each project also typically includes additional compression stations, pipeline loops, and metering stations, which collectively raise the system's effective capacity and reliability.
Near-term capacity buildout pipeline
- By the end of 2026, analysts expect the US to add roughly 6.3 Bcf/d of new natural gas pipeline capacity, most of it in the South Central region, including Texas, Louisiana, and Oklahoma.
- At least eight major projects now listed on the FERC "pending" tracker will add between 1.5 and 3 Bcf/d of capacity, with in-service dates ranging from 2026 to 2027.
- The largest intrastate buildouts are concentrated in the Haynesville and Delaware Basin play areas, where new gathering lines reduce pipeline bottlenecks and lower local gas prices.
- LNG-directed expansions-such as the Evangeline Pass and East Lateral Xpress upgrades-will add about 1.4 Bcf/d of capacity feeding Plaquemines and other Gulf Coast terminals by 2027.
- Several proposed offshore and deepwater subsea pipeline projects are in early permitting stages, chiefly to connect new offshore gas fields to onshore processing and LNG liquefaction facilities.
Opposition and local pushback patterns
Despite the macroeconomic rationale, many pipeline expansion projects face increasingly organized opposition from local communities, environmental groups, and some state governments. In states such as Louisiana and Virginia, residents have raised concerns about potential water contamination, increased flaring, and the risk of leaks along densely populated corridors leading to LNG export terminals.
Recent polling by an energy-policy think tank suggests that over 55% of residents living within one mile of a proposed pipeline corridor express "significant concern" about safety and property-value impacts, up from about 38% in 2020. This has led operators to invest more in community outreach, enhanced monitoring technologies, and voluntary setbacks from schools and drinking-water wells, which now appear routinely in project filings with FERC and state agencies.
Environmental and regulatory factors
Federal and state regulators are attempting to balance the need for energy infrastructure capacity with tightened environmental safeguards, especially in flood-prone and ecologically sensitive areas. For example, several Gulf Coast pipeline projects now must include detailed wetlands mitigation plans and real-time leak-detection systems that automatically shut down segments if pressure anomalies exceed preset thresholds.
The Biden EPA's 2023 rule on methane emissions at compressor stations has pushed operators to adopt low-bleed pneumatics and periodic infrared surveys, which can reduce fugitive emissions by up to 30% along expanded corridors. At the same time, innovations in carbon-capture ready design-such as预留 tie-in points for future CO₂ pipelines-have begun to appear in new expansion schematics, anticipating eventual integration with industrial-scale capture hubs.
Case study: Bridger Pipeline expansion
One high-profile example of cross-border pipeline expansion activity is the Bridger Pipeline Expansion, which is designed to move up to 550,000 barrels of oil per day from the Canadian border with Montana through eastern Montana and Wyoming to tie-ins with existing US systems. The 650-mile, 3-foot-diameter line is projected to carry about two-thirds of the capacity of the Keystone XL pipeline it effectively replaces, with the first phase of construction targeted to begin in fall 2027 and reach full service by late 2028.
Environmental groups argue that the project would increase climate emissions from expanded oil sands extraction, while proponents highlight potential job creation-roughly 1,200 construction-phase jobs and 150 permanent positions-and improved safety relative to rail transport. The project must still secure additional air-quality and wetlands permits from both states and federal agencies, which industry sources say could delay final investments by six to twelve months.
Technology and design trends shaping expansions
- Modern pipeline expansions increasingly use advanced materials such as higher-yield-strength steel and fusion-bonded epoxy coatings, which reduce corrosion risk and allow thinner walls at higher operating pressures.
- Many new projects incorporate distributed fiber-optic sensing along the right-of-way, enabling operators to detect ground movement, third-party interference, or temperature changes within minutes instead of hours.
- Compression stations on key corridors are being upgraded with variable-speed drives and digital control systems, which can cut fuel consumption per unit of gas moved by 12-15%.
- Operators are also installing more remote-monitoring hubs linked to weather and seismic data feeds, allowing them to preemptively reduce pressure or shut down segments ahead of storms or earthquakes.
Investment and economic implications
Between 2023 and 2026, US pipeline operators have announced roughly $35-40 billion in capital expenditures dedicated to pipeline expansion efforts, with the bulk allocated to Gulf-oriented gas corridors and Permian-linked projects. A 2025 industry report estimates that these investments will support more than 70,000 direct and indirect jobs over the construction period, with an average annual payroll impact of about $4.2 billion in the affected states.
For local economies, the primary benefit is not only employment but also increased local tax revenues from pipeline property assessments and right-of-way fees, which some counties in Texas and Louisiana have seen rise by 15-25% over the past three years. However, a portion of residents report perceived negatives such as noise from compressor stations, temporary traffic disruptions, and anxiety over long-term liability if leaks occur, underscoring the need for ongoing community engagement.
Everything you need to know about Us Pipeline Builds Surge Again But Resistance Grows
Which US regions are seeing the most pipeline expansions?
The South Central US-especially Texas, Louisiana, and Oklahoma-is the epicenter of current pipeline expansion, with roughly 85% of new gas capacity in 2025 located in this region. Additional activity is concentrated along the Appalachian corridor (Pennsylvania, West Virginia, and Ohio) and the Permian Basin, where new gathering and interstate pipelines are easing longstanding bottleneck constraints.
How much new pipeline capacity is under construction in 2026?
Industry analysts estimate that the US is adding roughly 18 Bcf/d of new natural gas pipeline capacity through 2026, the largest buildout since 2008. Roughly 6.3 Bcf/d of that capacity came online in 2025 alone, with the remainder scheduled to enter service between 2026 and 2027.
What are the main drivers of current pipeline expansions?
The primary drivers are surging LNG export volumes, rising industrial and data-center demand for gas-fired power, and sustained production growth in the Permian and Haynesville basins. Policy changes that expedite permitting and long-term contracts from LNG exporters have further reduced financial risk for pipeline companies, making expansions more attractive.
Are there health and safety concerns tied to these projects?
Communities near pipeline corridors frequently cite concerns about explosion risk, air quality, and potential impacts on drinking-water sources, especially where pipelines cross under rivers or aquifers. Operators and regulators have responded by tightening setback requirements, mandating more frequent integrity inspections, and installing automatic shutdown systems, though critics argue that enforcement varies by state.
What role does FERC play in pipeline expansions?
The Federal Energy Regulatory Commission (FERC) reviews and certifies most major interstate pipeline projects, assessing need, environmental impact, and rate design under the Natural Gas Act. FERC also maintains the "approved and pending" pipeline project database, which utilities and investors use to track timelines and capacities for key corridors.