NGLs Price and Fundamentals

Ethane

In the last 10 years, ethane prices have been mostly determined by natural gas prices. Ethane has the flexibility to either be extracted and sold separately (at Mont Belvieu, TX or Conway, KS) or left within the natural gas stream (commonly called rejection). This flexibility creates a direct link between the two commodities. 

Commentary

August 5: Ethane prices were little changed in July, averaging roughly $0.23/gal as Henry Hub prices remained near June levels. Ethane continues to trade primarily on natural gas and recovery economics, leaving it less exposed than the heavier NGLs to the renewed volatility in crude and global LPG markets.

July 10: Ethane prices strengthened modestly through June, averaging roughly $0.23/gal as firmer natural gas prices improved recovery economics. Unlike the heavier NGLs, ethane remained largely insulated from the decline in crude oil prices following the easing of geopolitical tensions in the Middle East, with pricing continuing to track natural gas fundamentals.

June 4: Ethane prices remained relatively soft through May, averaging near $0.20/gal as weak natural gas prices continued to weigh on recovery economics. Unlike propane and other crude-linked NGLs, ethane remained largely insulated from broader energy market volatility, with pricing continuing to follow natural gas fundamentals. According to EIA data, US ethane exports reached a record high in February, supported by growing petrochemical demand from China. Industry analysts expect export volumes to remain strong in the near term, with March potentially setting another record before shipping constraints moderate growth in subsequent months.

May 7: Ethane prices remained relatively soft through April, averaging near the low-$0.20s/gal as weak natural gas pricing continued to pressure frac spreads. While crude and LPG markets rallied sharply following disruptions in the Middle East, ethane remained largely insulated from broader energy volatility due to its close relationship with natural gas economics and recovery incentives. Production was temporarily impacted by winter-related disruptions and weaker frac spreads earlier in the year, contributing to a modest draw in inventories. Looking ahead, export demand remains constructive as new Chinese petrochemical capacity ramps higher and additional Very Large Ethane Carrier availability gradually supports incremental export growth.

April 2: Ethane prices remained relatively subdued through March, averaging roughly $0.24/gal. Because ethane economics are closely tied to gas, softer Henry Hub pricing has kept recovery incentives elevated, sustaining supply. Near-term pricing continues to be dictated by natural gas rather than broader NGL fundamentals. The Middle East conflict has had limited direct impact on ethane, reinforcing its role as the least crude-sensitive product in the barrel.

August 5: The global ethane trade is currently served by approximately 48 VLECs. Eight new vessels have already been delivered, another 11 are expected by the end of 2026 and 28 additional vessels are scheduled for delivery in 2027. The larger fleet should provide the shipping capacity needed to support continued growth in US ethane exports.

July 10: Energy Transfer announced an expansion of its Nederland export terminal that will add approximately 240 MBbl/d of ethane export capacity and 55 MBbl/d of additional LPG export capacity. The project is expected to enter service in phases beginning in 2028 and should further strengthen the long-term outlook for US ethane exports.

June 23: Analysts expects 11.8 Mt/year of new global ethylene capacity through 3Q26. However, much of the capacity is expected to rely on naphtha, mixed-feed, or refinery-integrated configurations rather than pure ethane cracking. The largest direct driver of US ethane demand is the 2.1 Mt/year Golden Triangle Polymers project, which could consume roughly 110 MBbl/d of ethane.

June 4: Enterprise's Neches River Phase 2 terminal began propane export operations earlier this spring and is expected to remain focused on LPG exports through much of 2026. However, the facility's flexible design is expected to support additional ethane exports (180 MBbl/d) beginning in 2027 as new domestic and international demand sources come online. 

May 7: Enterprise’s Neches River Phase 2 terminal began propane export operations during April, adding additional flexibility for Gulf Coast NGL exports. While the terminal is expected to prioritize propane and butane loadings through 2026, its long-term flexibility could support additional ethane exports beginning in 2027.

Ethane Background

Ethane Rejection Economics:

• Ethane can be "rejected," meaning producers (or the operator of a processing plant) leave ethane in the natural gas stream instead of recovering it, usually when ethane's market value is low relative to that of natural gas.

• When natural gas prices rise relative to ethane, producers prefer ethane rejection, reducing ethane supply and supporting ethane prices. Conversely, lower natural gas prices encourage ethane extraction, increasing supply and pressuring ethane prices downward. This relationship means that if the price ratio between ethane and local natural gas becomes too small or too large, ethane rejection can correct the imbalance.

Extraction Flexibility:

• Ethane recovery is economically viable when the price spread (the "frac spread") between ethane and natural gas is favorable.

• Producers regularly monitor this frac spread. If natural gas prices climb significantly, the relative incentive to extract ethane diminishes, reducing ethane supply and aligning ethane price movements with natural gas trends.

Infrastructure and Market Linkages:

• Many natural gas processing facilities have the option to easily switch between ethane recovery and rejection based on economics.

• This operational flexibility means ethane supply frequently responds to shifts in natural gas pricing, tightening the correlation between their prices.

Market Demand and Export Dynamics:

• US ethane demand heavily depends on petrochemical cracking and export markets. However, these demand factors often adjust slowly compared to changes in natural gas economics, leaving natural gas price dynamics as the primary short-term driver of ethane price direction.

propane

Propane

Propane prices in the US are influenced by crude oil prices, other NGL prices, weather, and propane's own supply, demand, and inventory balance. Unlike ethane, propane cannot be rejected into the natural gas stream in large amounts. Propane's relative value to oil typically strengthens when domestic inventories are low (that is, demand has been relatively high compared to supply) and weakens when the US propane market is well-supplied. Because of this interaction between propane's economics and other market prices, propane's price history is complex. 

Commentary

August 5: Propane prices continued to weaken in July, averaging approximately $0.71/gal compared with $0.75/gal in June. The propane-to-WTI ratio remained near 38%, indicating that propane broadly kept pace with movements in crude even as domestic fundamentals remained heavily supplied.

July 10: Propane prices weakened through June as crude oil prices retreated following the easing of supply concerns in the Middle East. Despite the decline in outright prices, propane strengthened relative to WTI as crude fell more sharply, lifting the propane-to-WTI ratio from roughly 35% in May to 39% in June. Domestic fundamentals remain well supplied, supported by robust associated-gas production and rising inventories, while export demand continues to provide an important outlet for excess supply. Looking ahead, increased LPG availability from the Arabian Gulf and narrower export arbitrage into Asia may limit additional upside for US propane prices even as Gulf Coast export capacity continues to expand.

June 4: Propane prices strengthened through May alongside higher crude oil prices, with propane's value relative to WTI improving modestly compared to April. While geopolitical disruptions in the Middle East supported global LPG markets, domestic fundamentals remain characterized by strong NGL production and growing export demand. Despite improving export economics, inventories remain relatively comfortable, limiting the extent to which propane has participated in the broader crude rally.

May 7: Propane prices were relatively stable through April even as crude oil markets rallied sharply on escalating geopolitical tensions in the Middle East. On a percentage-of-WTI basis, propane weakened compared to March as elevated inventories and continued associated gas growth limited upside participation. Domestic fundamentals remain well supplied, with inventories still materially above seasonal norms despite stronger export economics. Near-term pricing direction will likely remain dependent on whether export growth can materially reduce the ongoing inventory overhang.

April 2: Propane prices strengthened in March alongside higher crude, as Middle East disruptions tightened global LPG balances. However, elevated US inventories and continued growth in associated gas supply limited the move. In March, propane fell below average February levels on a percentage-of-WTI basis, reflecting a still well-supplied domestic market despite improved export economics. Near-term direction will depend on the balance between crude-driven support and persistent inventory overhangs.

August 5: Enterprise’s Neches River Phase 2 terminal is expected to remain focused primarily on propane during the second half of 2026 before transitioning toward ethane service in 2027. The temporary propane capacity should provide an additional outlet while US inventories remain elevated.

July 10: Energy Transfer announced an expansion of its Nederland export terminal that will add approximately 55 MBbl/d of LPG export capacity alongside a larger ethane expansion. The project, expected to begin service in phases starting in 2028, should provide additional flexibility for US propane exports as domestic production continues to grow.

June 4: Export infrastructure remains a key focus for propane markets. Enterprise's Neches River Phase 2 facility has added incremental LPG loading flexibility along the Gulf Coast, while additional export projects are expected to come online through late 2026. Enterprise will complete a 300 MMBbl/d LPG expansion at its Enterprise Houston Terminal by the end of 2026. Tyler Cott, SVP for Hydrocarbon Marketing, said ”We expect (Neches River Terminal) to do a good amount of propane in the balance of this year; that will transition to ethane as our (Enterprise Hydrocarbons Terminal) capacity comes online late this year.”

May 7: Enterprise’s Neches River Phase 2 expansion is increasingly viewed as an important variable for the US propane balance heading into winter 2026-27. Early propane export service is expected to begin during May, with the project adding incremental Gulf Coast loading flexibility at a time when the domestic market remains heavily supplied.

Propane Background

Reasons why propane prices follow crude oil prices:

Petrochemical Demand:

• Propane serves as a feedstock in petrochemical plants, particularly in propane dehydrogenation plants (PDH) and in steam crackers, which can switch feedstocks based on price competitiveness between propane and other feedstocks (usually ethane and butane in the US).
• Rising crude prices often lift naphtha prices, making propane a more attractive feedstock for petrochemical plants (globally) and thus supporting propane prices.

Heating Dynamics:

• Propane demand is seasonal, because it is a heating fuel in winter. Because of the concentration of demand in winter months, propane prices also follow the seasonal pattern of higher prices in winter and lower prices in summer.
• Propane is consumed from on-site tanks at end-user facilities (home, business, industrial location), rather than delivered directly from a pipeline. Therefore, demand statistics from the US EIA often appear after the fact, when the retail distribution network refills from primary storage at the fractionator sites.

Export and Global Pricing Influences:

• The US exports significant volumes of propane, linking domestic prices to international LPG (Liquefied Petroleum Gas) markets, which are heavily influenced by global crude benchmarks.
• When crude prices increase internationally, overseas propane benchmarks like the Saudi Aramco contract price typically rise, encouraging maximum exports from the US. 

Infrastructure and Storage Dynamics:

• US propane storage and export infrastructure allows propane markets to rapidly respond to global crude-driven market signals.
• Robust export capacity connects domestic propane pricing closely to crude-driven global LPG demand.

Influence of Propane’s Own Supply-Demand Balance

• • While propane pricing largely tracks crude oil, propane’s own domestic supply-demand fundamentals independently affect its relative pricing and market value.

  • When US propane inventories are low, typically due to strong domestic or export demand, propane’s price premium relative to crude tends to increase.

  • Conversely, if propane supply exceeds domestic and export demand, resulting in higher inventories, propane’s value relative to crude often weakens, even if crude prices remain stable or strong.

Butane

Butane, specifically normal butane (n-butane), is a natural gas liquid (NGL) produced primarily during natural gas processing and petroleum refining. It's distinct from propane and ethane due to its heavier molecular structure and distinct market uses. Like propane, butane closely tracks crude oil due to its end-uses in transportation and petrochemicals.

Commentary

August 5: Normal butane strengthened relative to crude during July, with its value rising to approximately 53% of WTI from 50% in June. Outright prices increased by only about $0.01/gal, but crude weakened more sharply, allowing butane to outperform on a relative basis. The butane-to-propane spread widened as Middle East supply and shipping disruptions increased demand for barrels sourced outside the region. The resulting record export activity has limited the seasonal build in normal butane inventories. 

July 10: Normal butane prices weakened through June as export demand slowed following record shipments earlier in the spring. While lower crude oil prices weighed on the broader NGL complex, butane underperformed relative to propane as the butane-to-propane spread narrowed from May's elevated levels. Seasonal gasoline blending demand also continued to fade under summer Reid Vapor Pressure (RVP) specifications, reducing domestic consumption. Looking ahead, export demand will remain the primary source of support for butane prices, though softer Asian pricing and narrower export arbitrage may continue to pressure the market.

June 4: Normal butane prices strengthened materially through May, outperforming propane on a relative basis as crude oil prices moved higher and export demand remained robust. Although seasonal gasoline blending demand typically begins to fade heading into the summer months, temporary relief for summer gasoline vapor pressure requirements has provided some additional support to domestic demand. At the same time, strong export activity and tighter global LPG balances have helped offset the impact of growing domestic supply.

May 7: Normal butane prices weakened relative to crude through April as seasonal gasoline blending demand declined ahead of summer RVP specifications. While outright prices remained supported by stronger crude and export demand, the seasonal loss of blending demand pressured butane’s value relative to WTI. Elevated inventories and strong NGL production continue to weigh on domestic fundamentals, though global LPG tightness and improved export economics have helped prevent a steeper decline. The butane-to-propane spread widened materially during April, reflecting propane weakness tied to high inventories while butane maintained support from export demand and crude-linked pricing.

April 2: Butane prices increased alongside crude during March, though relative strength versus oil remains limited due to elevated inventories and ample supply. Seasonal gasoline blending provided some support, but the market continues to face structural oversupply. Global dynamics have tightened somewhat as Middle East disruptions reduced LPG availability, but domestic fundamentals remain the dominant factor. Export capacity constraints and high inventory levels are expected to limit sustained upside despite stronger crude pricing.

August 5: The EPA has continued to renew a nationwide fuel waiver allowing a common 10-psi gasoline pool through August 8. The waiver provides refiners with some additional blending flexibility, although summer vapor-pressure restrictions still sharply limit the amount of normal butane that can enter the gasoline pool.

Butane Background

US Butane Market Overview

Key Uses:

• Gasoline blending (primary, seasonal)

• Petrochemicals (producing isobutane, butadiene, alkylate)

• Heating fuel (minor, compared to propane)

• Exports (primarily Asia, Latin America, Europe)

Supply Sources

• Natural Gas Processing: Primary source, separating butane along with other NGLs (propane, ethane, pentanes).

• Refineries: Secondary source from crude oil processing.

Infrastructure & Storage

• Primarily stored in Gulf Coast salt dome caverns (Mont Belvieu, TX).

• Transported domestically via pipelines, rail, and trucks.

Domestic Demand

• Peak in winter (Oct-Mar): Increased use in gasoline blending due to higher vapor pressure requirements.

• Reduced in summer (Apr-Sep): Regulatory limits lower blending demand.

• Consistent year-round petrochemical demand.

Seasonal Pricing Patterns

• Winter: High blending demand elevates prices relative to crude oil, peaking around Jan-Feb.

• Summer: Reduced blending leads to excess supply, softening prices; excess typically exported or stored.

Exports

• Growing due to rising US production.

• Key markets: Asia (Japan, South Korea), Latin America, Europe.

Pricing Dynamics

• Quoted at major NGL hubs (primary benchmark: Mont Belvieu).

• Influenced by:

  • Crude Oil Prices: Close correlation due to shared end-markets.

  • Gasoline Market Dynamics: Competition with natural gasoline, ethanol, and refining margins.

  • Natural Gas/NGL Production: Higher production can depress prices if demand lags.

  • Export Conditions: Increased exports support domestic pricing.

  • Inventory Levels: High inventories pressure prices; low inventories support pricing.

General Market Principles

• Butane pricing closely tracks crude oil due to similar applications.

• Seasonal inventory cycles: builds in summer/fall, draws in winter, monitored closely by the market.

• Mont Belvieu prices serve as key benchmarks for domestic and international contracts.

Isobutane

Isobutane is produced at gas processing plants, refineries, and through isomerization units that convert normal butane into isobutane. Its value is tied closely to octane markets because it is primarily used as alkylation feedstock for high-octane gasoline. Demand is steadier than normal butane and less seasonal, but the market is thinner, so prices can move quickly when refinery runs or isomerization economics shift. Isobutane typically trades at a premium to normal butane, though this spread narrows when octane values soften or normal butane prices rise sharply.

Commentary

August 5: Isobutane fundamentals remain relatively well supplied, with steady refinery and alkylation demand continuing to offset strong production. US supply held near 480 MBbl/d in May, while inventories remained around 14.2 MMBbl and above the five-year average. The elevated inventory position should limit sustained price upside, although isobutane remains a relatively thin market and can respond sharply to refinery outages, changes in alkylation demand or stronger octane values.

July 10: Isobutane prices softened through June alongside the broader C4 complex as lower crude oil prices weighed on NGL values. Unlike normal butane, however, demand remained supported by relatively steady refinery and alkylation activity, helping limit downside despite ample supply growth. As refinery utilization remains healthy, isobutane pricing is expected to continue tracking gasoline blending economics and octane demand more closely than broader export markets.

June 4: Isobutane prices remained relatively firm through May, supported by stronger crude prices and steady refinery demand. Like normal butane, isobutane benefited from broader strength across C4 markets, though pricing continued to be influenced primarily by refinery economics and alkylation demand rather than direct exposure to geopolitical events. Rising NGL production has kept overall supply ample, but consistent refinery utilization has helped prevent significant inventory pressure.

May 7: Isobutane prices remained relatively stable through April as refinery and alkylation demand continued to offset broader supply growth from rising NGL production. The premium to normal butane narrowed as seasonal gasoline blending increased demand for broader C4 streams. While stronger crude prices have generally supported the market, isobutane continues to trade more closely with refinery economics and octane demand than broader geopolitical developments. Ample supply conditions are expected to limit significant upside absent stronger refinery utilization or tighter octane balances.

April 2: Isobutane prices remain relatively stable, with steady refinery demand offsetting broader supply pressure from rising NGL production. The spread to normal butane narrowed as seasonal blending increased demand for C4 streams. While crude-driven strength has supported the complex, isobutane continues to trade primarily on refinery economics and octane demand, with limited direct exposure to geopolitical disruptions.

Coming soon

Isobutane Background

US Isobutane Market Overview

Key Uses:

• Alkylation feedstock for producing high-octane gasoline components

• Petrochemical feedstock for specialty chemicals

• Refinery blending and octane enhancement

• Occasional exports, typically when domestic supply outpaces refinery demand

Supply Sources

• Natural Gas Processing: Baseline production of isobutane alongside other NGLs

• Refineries: Additional volumes produced through crude oil fractionation

• Isomerization Units: Convert normal butane into isobutane to meet refinery alkylation needs

Infrastructure & Storage

• Stored primarily in Gulf Coast salt dome caverns, often alongside other butane streams

• Moved by pipeline, rail, and truck to refineries and petrochemical plants

• Limited storage relative to propane and normal butane due to smaller market size

Domestic Demand

• Demand is steady year-round because alkylation units operate continuously
• Less seasonal than normal butane since its primary use is octane production, not vapor-pressure blending

• Sensitive to refinery utilization and octane economics

Pricing Dynamics

• Prices are quoted at major NGL hubs such as Mont Belvieu

• Influenced by:

  • Octane values and gasoline-blend economics

  • Normal butane prices, due to isomerization flexibility

  • Crude oil trends as broader energy benchmarks

  • Refinery runs and alkylation margins

• Typically trades at a premium to normal butane, with the spread narrowing when:

  • Normal butane strengthens sharply, or

  • Octane values soften

General Market Principles

• Isobutane is a thinner market, so prices can move quickly when refinery demand shifts

• The ability to convert normal butane into isobutane via isomerization helps balance supply

• Pricing tends to follow octane markets more closely than crude

• Inventory levels can fluctuate rapidly due to the smaller market size and refined-product linkages

Natural Gasoline

Natural gasoline (C5+) is produced mainly at gas processing plants and closely tracks light crude and naphtha because it competes directly in gasoline blending and export markets. Demand is anchored by its role as a blendstock and as diluent for heavy crude, providing steady baseline pull. Prices typically follow WTI, and the natural-gasoline-to-crude ratio weakens when domestic supply outpaces blending or diluent needs.

Commentary

August 5: Natural gasoline strengthened sharply relative to crude during July, rising to approximately 95% of WTI from 84% in June. The move was driven largely by stronger Asian naphtha prices, which increased the value of US natural gasoline as a substitute feedstock. With Asian naphtha rising faster than crude during the month, natural gasoline strengthened relative to WTI.

July 10: Natural gasoline prices weakened through June as crude oil and Asian naphtha markets retreated following the easing of supply concerns in the Middle East. On a percentage-of-WTI basis, natural gasoline declined from roughly 90% in May to 84% in June as softer international naphtha values reduced export netbacks. While domestic production continues to increase alongside broader NGL supply growth, pricing remains driven primarily by global crude and naphtha markets rather than US supply-demand fundamentals. 

June 4: Natural gasoline prices strengthened sharply through May, supported by higher crude oil prices and tightening global naphtha markets. Unlike propane, natural gasoline has participated more directly in the recent rally because of its close relationship with crude-derived products and international naphtha pricing. Export economics remain favorable as supply disruptions in the Middle East continue to support global light-end markets, while strong demand for blending and petrochemical feedstocks has helped sustain pricing strength. 

May 7: Natural gasoline prices strengthened during April in absolute terms as crude oil and global naphtha markets rallied amid Middle East supply disruptions. However, prices lagged the pace of the crude rally on a percentage-of-WTI basis. Tightening global naphtha balances and elevated Asian pricing continue to support export economics for US natural gasoline, particularly into petrochemical and blending markets. Unlike propane and butane, natural gasoline has benefited more directly from crude-linked strength due to its close relationship with global naphtha markets and refinery feedstock demand.

April 2: Natural gasoline prices strengthened in March, closely tracking the rise in crude oil and global naphtha markets. The Middle East conflict has tightened global light-end balances, supporting pricing through stronger export netbacks. However, domestic fundamentals remain relatively loose due to continued growth in NGL supply. As a result, natural gasoline continues to trade largely as a crude-linked product, with price direction driven more by global oil markets than US supply-demand shifts.

Natural Gasoline Background

Natural gasoline is an NGL on the heavier end of the hydrocarbon spectrum, typically designated as pentanes plus (C5+). It resembles a very light crude or condensate. In the industry, it’s often simply called “natural gasoline” or “plant condensate.”

Key Uses

• Gasoline blending (raising octane and vapor pressure)

• Diluent for heavy crude oil (especially in Canada’s oil sands, to create “dilbit”)

• Feedstock for petrochemical processes

• Occasionally sold as a standalone fuel component or exported

Production Sources

Natural gasoline is produced mainly from:

• Natural gas processing plants (the heaviest portion of the NGL barrel)

• Stabilization of field condensate during crude oil production (less common in marketed NGL reporting)

The US shale boom has notably increased production, especially from the Permian Basin and Eagle Ford Basin.

Infrastructure & Storage

Natural gasoline is stored in:

• Salt dome caverns and tanks in Gulf Coast hubs (Mont Belvieu is the primary location)

• Field-level tankage in producing regions

• Railcar or pipeline storage during transit to blending or export locations

Pipelines move volumes from production regions to refineries, blenders, or export docks. Rail transport is also common, particularly to Western Canada.

Domestic Demand

The main domestic uses are:

• Blending into finished gasoline to meet vapor pressure and octane specs

• Diluent blending with heavy crude oil from Canada and North Dakota

• Smaller volume into petrochemical production

Diluent demand is especially important: Canadian oil sands operations rely heavily on US natural gasoline to move bitumen by pipeline.

Exports

Exports are focused mainly on:

• Canada (as diluent)

• Some volumes into Latin America and occasional Asian buyers for blending

Canadian diluent demand is the single biggest structural driver of export flows.

Pricing

Natural gasoline prices are typically quoted at:

• Mont Belvieu (primary benchmark)

• Conway, Kansas (Midcontinent benchmark)

Key Pricing Drivers

• Crude Oil Prices
  Natural gasoline tracks very closely with WTI because of its similarity to light naphtha or condensate.

• Gasoline Blendstock Demand
  Seasonal blending patterns influence pricing.

• Canadian Diluent Demand
  Steady, structural demand from Western Canada supports a large baseline consumption.

• Natural Gas/NGL Production
  Higher shale output increases supply, affecting balances and pricing.

• Inventory Levels
  Market participants watch stocks to gauge oversupply or tightness.

• Export Economics
  Pipeline and rail transportation costs into Canada set price floors.

Seasonality

Natural gasoline shows less pronounced seasonality than propane or normal butane but still has patterns:

• Summer Driving Season (April–September): Higher demand for gasoline blending raises prices relative to crude.

• Winter: Decreased recoveries at processing plants, because natural gasoline more readily condenses as part of the crude oil stream. 

• Spring and Fall Refinery Maintenance: May cause temporary softening in blending demand.

Overall, seasonal swings are tempered by consistent diluent demand, which anchors baseline consumption levels.

General Market Principles

Strong Crude Oil Correlation
Prices often move in tandem with WTI and condensate markets.

Blending and Diluent Dynamics
Demand comes from gasoline spec requirements and Canadian bitumen transport needs.

Infrastructure Constraints
Pipeline and rail capacity to Canada can cause basis volatility.

Export/Import Economics
Netbacks from Canadian oil sands influence pricing spreads.

Inventory Cycles
Builds occur in lower demand periods, with draws during blending peaks or pipeline restocking.

LPG

Exports of LPG from the US are critical to allowing for the growing amounts of NGLs from shale. The future of propane and butane prices hinge on the ability for those purity products to reach the water and fulfill overseas demand. If terminal or dock capacity is tight, inventories in the Lower 48 could swell, depending on production growth levels. As mentioned above, higher levels of US inventories typically result in lower prices. Below are planned and existing export terminal additions that will help clear excess propane and butane from the US.

Commentary

August 5: Global LPG markets strengthened during July as renewed Middle East tensions supported crude and increased the value of supply originating outside the Arabian Gulf. However, the US propane market remains weighed down by high inventories, limiting the pass-through from stronger international pricing into Mont Belvieu. Houston-to-Chiba VLGC freight rates declined during July but remained historically elevated. Longer voyages, including rerouting around the Cape of Good Hope, and stronger tonne-mile demand from Asia and India continue to absorb available shipping capacity.

July 10: US LPG markets softened through June as lower crude oil prices and the normalization of Strait of Hormuz trade flows narrowed export arbitrage into Asia. The unwinding of the geopolitical risk premium weighed on international LPG prices, while elevated VLGC freight costs and rising domestic propane inventories further pressured export economics. Despite these near-term headwinds, Gulf Coast export infrastructure continues to expand, positioning the US to accommodate growing propane and butane production over the coming years. While increased Arabian Gulf competition may limit incremental export growth, overseas demand remains the primary outlet for balancing the expanding US NGL barrel.

June 4: LPG markets remained supported through May by stronger crude oil prices and continued disruptions to global trade flows. While international propane and butane markets have benefited from tighter global balances, domestic fundamentals remain influenced by strong NGL production and elevated inventories. Export demand continues to serve as the primary outlet for balancing growing US propane and butane supply, with Gulf Coast terminals operating at high utilization rates. 

May 7: LPG prices remained supported in April by higher crude prices and tighter global trade flows tied to the Middle East conflict, but the US market still did not fully capture the strength in international LPG pricing. Elevated domestic propane inventories, high terminal utilization, and rising freight costs continued to limit the pass-through from stronger overseas demand into Mont Belvieu pricing. Asia remains a key outlet for US LPG, but the sharp increase in Houston-to-Asia VLGC freight rates has narrowed the arbitrage window and made delivered economics more challenging for buyers. Export growth should still provide support through the summer as Gulf Coast capacity expands and Neches River Phase 2 adds temporary propane loading flexibility, though infrastructure and shipping constraints remain important limits on upside.

April 2: LPG prices moved higher through March, supported by the rally in crude and tightening global balances tied to Middle East disruptions. Reduced availability of regional barrels lifted international pricing and improved export economics for US cargoes. However, domestic fundamentals remain loose, with elevated inventories and export capacity constraints limiting the upside relative to crude. As a result, LPG prices have strengthened outright but remain capped on a percentage-of-WTI basis.

Recent market-related events

July 10: Energy Transfer announced an expansion of its Nederland export terminal that will add approximately 240 MBbl/d of ethane export capacity and 55 MBbl/d of additional LPG export capacity beginning in 2028. The expansion reflects continued expectations for long-term growth in US NGL production and export demand.

June 23: Phillips 66 has quietly expanded fractionation capacity at its Sweeny Complex by 125 MBbl/d, increasing total capacity to 675 MBbl/d from 550 MBbl/d. The company is also advancing its proposed 100 MBbl/d Coastal Bend fractionator, which is expected to enter service in 1Q28. Combined, the projects would add 225 MBbl/d of Gulf Coast fractionation capacity, positioning Phillips 66 to accommodate growing NGL production from the Permian and Eagle Ford basins.

June 4: Targa recently started up a new fractionator at Mont Belvieu and remains on track to expand both NGL takeaway and LPG export capacity through 2027. Enterprise is likewise expanding gas processing, fractionation, pipeline, and export infrastructure, including commissioning Phase 2 of its Neches River Terminal, which can load propane or ethane depending on market conditions. Collectively, these projects reflect expectations that associated gas and NGL production will continue growing even if Permian crude oil production remains relatively flat.

May 7: Targa’s Galena Park LPG terminal resumed export operations in April after mechanical issues disrupted propane and butane flows in March. The restart should help normalize Gulf Coast loadings, though spot export flexibility remains limited as major terminals continue to run at high utilization.

April 2: Targa declared force majeure at its Galena Park export terminal in mid-March following mechanical issues on a key propane handling unit, reducing loading capacity at one of the largest US LPG export facilities. With the terminal accounting for roughly 20% of US LPG exports, the disruption comes at a time when Middle East supply is already constrained, further tightening global balances.

Background on US LPG Exports

The United States has become the world’s leading LPG exporter over the past decade, largely because of the shale boom that dramatically increased natural gas liquids (NGL) production. When natural gas and crude oil are produced, significant volumes of NGLs, especially propane and butane, are extracted along with them.

Domestic demand for propane (e.g., heating, agriculture, petrochemicals) and butane (e.g., blending, refining, petrochemicals) has limits and is seasonal. As shale output surged, US producers faced the risk of oversupply and low domestic prices. LPG exports emerged as the critical pressure valve to balance the market.

The Gulf Coast, with major fractionation hubs (like Mont Belvieu) and deepwater export terminals, became the launch point for large-scale shipments to Asia, Latin America, and Europe. These exports have grown to over 2.5 MMBbl/d (waterborne and land exports) in recent years, making them essential for:

• Clearing surplus production of propane and butane that the US market cannot absorb year-round.

• Supporting domestic NGL values relative to crude oil by tapping higher-value overseas demand, particularly from Asian petrochemical and heating markets.

• Creating price linkages between US hubs and international benchmarks (like FEI in Asia).

In effect, LPG exports are no longer optional—they are fundamental to balancing US propane and butane supply. Without strong export flows, inventories could quickly swell, pressuring prices and reducing NGL recovery incentives across the upstream and midstream sectors.

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