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Do not assume substitution solves it. Medium-sulfur coke is harder to graphitize and raises impurity risk, so it only partially replaces low-sulfur feed. The practical hedge is blending capability plus long-term contracts, not switching grades outright.
Anode makers and anode producers are quietly bidding for the same low-sulfur tons, so a buyer's real risk is not price level but allocation. Locking multi-year supply with a refinery beats spot purchasing once the anode ramp accelerates.
The sulfur split is the whole story. High-sulfur cargo is abundant and cheap, but it cannot be graphitized easily, so it never reaches the battery chain. Watch vanadium and trace metals, not just sulfur number, when qualifying a low-sulfur parcel for anode use.