Viva Energy Poised to Capture Refining Margin Surge as Global Capacity Collapses on Geopolitical Disruption

The scale of the current supply disruption is historic. Global refinery throughput is forecast to drop by 4.3 million barrels per day in March 2026, marking the largest monthly decline in recorded history. This represents a reduction of roughly 5.1% of total global refining capacity, creating a severe imbalance that will require significant inventory drawdowns to offset.

The drivers are a potent mix of geopolitical action and targeted infrastructure attacks. OPEC+ production cuts, combined with sanctions on Russian oil exports, have been primary contributors to the global supply squeeze. The impact is concentrated in the Middle East, where approximately 4.0 million b/d of regional crude processing capacity faces either complete shutdown or operational restrictions. This concentration is critical, as many of these facilities are export-oriented with minimal storage, forcing immediate output reductions when logistics are disrupted.

The catalyst for the latest surge in refining pressure is the intensifying conflict in the Middle East. This has directly impacted shipping routes, leading to a sharp uplift in regional refining margins. As noted by UBS, this has driven a sharp uplift in Asian margins for converting crude into refined fuels, with gains most evident in jet fuel and diesel. The bank argues this conflict is supporting stronger oil refining margins, a dynamic that could flow through to improved earnings for refiners like Viva Energy if sustained.

The bottom line is a global refining network under unprecedented strain. The sheer volume of the capacity reduction-over 4 million barrels per day-is a direct result of coordinated policy actions and physical attacks on infrastructure. This isn't a minor hiccup; it's a fundamental shock to the system that is forcing a rapid recalibration of global product flows and pricing.

Regional Margins and the Crack Spread Reality

The global supply squeeze is translating directly into powerful regional profit signals. UBS has raised its forecast for European refining margins, now seeing European composite refining margins at $4.2 per barrel for fiscal year 2026, a 13% increase from prior estimates. This reflects the persistent strength in middle distillates, particularly diesel, where European cracks have hit multi-year highs. The bank notes that the region's troubles are structural, with the recent closure of the Benicia refinery and potential shutdown of the Lindsey plant compounding a long-term deficit.

In the United States, the benchmark 3-2-1 crack spread-a key measure of overall profitability from refining crude into gasoline, diesel, and heating oil-has held near record territory. As of late November, it hovered at $32.13 a barrel, close to an earlier high and the highest level since March 2024. This sustained strength shows the margin rally is not a fleeting event but a durable feature of the current market.

The underlying cause is a widening supply deficit. UBS now expects a 0.7 million barrels per day deficit in 2026, with the gap growing faster than demand revisions. While the bank has modestly raised its demand growth forecast for 2026 to 0.6 million barrels per day, the supply side is tightening more sharply due to project delays and announced refinery closures. This imbalance is the fundamental driver behind the elevated crack spreads and composite margin forecasts.

The bottom line is that refiners are reaping a windfall from a constrained system. Margins are high and forecasts are being raised, but this profitability is built on a foundation of shrinking refining capacity and rising demand. The question for investors is whether this setup can persist long enough to justify capital expenditure on new projects, a prospect the market currently views as unlikely.

Structural Shifts vs. Cyclical Relief

The current margin strength is not a temporary blip but a new equilibrium driven by permanent changes in refining capacity. The supply deficit is being cemented by two key factors: a minor delay in new capacity and the announced closure of several large refineries. UBS now anticipates a deficit of 0.7 million barrels per day in 2026, a gap that is growing faster than demand revisions. This is due to a minor delay for India's 180,000 barrels per day Barmer plant to early 2026 and the announced closure of the 170,000 barrels per day Benicia refinery in early 2026, with the potential shutdown of the approximately 110,000 barrels per day Lindsey refinery in the UK compounding the problem. These are not minor outages; they are permanent reductions to the global refining network.

The primary near-term risk to this thesis is cyclical relief. The conflict in the Middle East is the immediate catalyst for elevated regional margins, but UBS notes that the bank does not expect an outright physical shortage... provided shipping through the Strait of Hormuz normalises within 1 month. If flows through this critical chokepoint return to normal, the acute regional supply pressures that are driving the margin rally could ease quickly. This is a key vulnerability: the current profit surge is heavily dependent on a geopolitical situation that could resolve.

For the high-margin environment to persist beyond a few months, the market must see a structural shift in investment. The longer-term catalyst is the pace of new refinery construction. As one analyst noted, "the growing differentials between the crude prices and product prices are unlikely to see any relief for the time being... unless new plants are built in western economies - a very unlikely event." Without significant new investment, the supply deficit and the resulting high margins could endure for years. The current setup is a classic case of a shrinking supply base meeting steady demand, a dynamic that favors refiners but creates a fundamental imbalance that only massive capital expenditure can solve.

Financial Impact and Forward Catalysts

The financial implications of this supply shock are now crystallizing for refiners. For a company like Viva Energy, a sustained high-margin environment could add roughly $20 million to its gross refining earnings across the March quarter. This projection hinges on UBS's estimate that its Geelong refinery margin could lift to around $10.70 per barrel in March, a level about 14% above current market consensus. This windfall is a direct translation of the global imbalance into corporate P&L, turning a structural deficit into a tangible profit boost.

Yet the rally's longevity is not guaranteed. Two primary catalysts will determine whether this profit surge persists or fades. The first is the pace of new refinery construction. As one analyst noted, the current "growing differentials between the crude prices and product prices are unlikely to see any relief for the time being... unless new plants are built in western economies - a very unlikely event." Without significant new investment, the supply deficit and resulting high margins could endure for years. The second, more immediate catalyst is geopolitical resolution. UBS has stated that the bank does not expect an outright physical shortage... provided shipping through the Strait of Hormuz normalises within 1 month. If this occurs, the acute regional supply pressures driving the margin rally could ease quickly, particularly for refiners exposed to Asian trade flows.

A domestic policy development also looms. The outcome of the federal government's review of refining subsidy payments, which is due to be finalised this month, could influence investor sentiment toward local refining economics. A favorable decision might bolster the case for domestic investment, while uncertainty or cuts could dampen the outlook for regional profitability.

The bottom line is that refiners are capturing a historic windfall, but the setup is precarious. The financial impact is real and substantial, as seen in Viva Energy's potential $20 million quarterly boost. However, the rally's endurance depends on a geopolitical calm that may not last and a structural investment cycle that shows little sign of accelerating. For now, the margin environment is supported by a shrinking supply base, but the path to normalization runs through either a political settlement or a long-overdue wave of refinery building.