The Panama Canal Bottleneck: What Tanker Traffic Tells Us About Oil Flows
Drought-driven transit restrictions at the Panama Canal have quietly reshaped Pacific-Atlantic crude and product arbitrage. Here's what the numbers actually say.
The Panama Canal has spent most of the last three years operating below its nominal capacity of 36 transits per day. Low lake levels at Gatún forced the Canal Authority to cap daily slots — at times as low as 22 — and auction the surplus at prices that reached $4 million for a single transit during the 2024 drought peak.
Why this matters for oil
The canal is not a major crude route — most Pacific-bound US crude goes via the Cape of Good Hope or transits Suez. But it is a material route for refined products: diesel and gasoline moving from US Gulf Coast refineries to Pacific Latin America (Chile, Peru, Ecuador), and LPG moving to Asia. When slots tighten, product cargoes either pay the auction premium or reroute via Cape Horn, adding 12–15 days to voyage times.
The current state
Transits have recovered to roughly 32–34 per day as reservoir levels normalised into late 2025. But the canal remains the single most weather-sensitive chokepoint in the Americas supply chain, and climate projections suggest the 2023–2024 drought pattern will recur. Bunker fuel premiums at Balboa and Cristóbal remain structurally elevated versus Houston — a clean signal that shippers are pricing in ongoing uncertainty.
What to watch
Daily transit numbers published by the Canal Authority, Gatún Lake levels, and the spot differential between US Gulf Coast diesel and West Coast South America diesel. A persistent diesel premium on the Pacific side is the clearest market signal that the canal is constraining flows.
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Written by AmericasOilWatch editorial. For corrections or story tips, email jon@americasoilwatch.com.