Destination storage, the buffer before offtake.
Tankage at the destination, ammonia refrigerated, methanol ambient, sized to buffer between ship arrivals and downstream draw. The molecule sits here whether it goes to a cracker or to direct offtake.
Where the molecule waits.
Once ashore, the molecule needs somewhere to sit until it is drawn down. Destination storage is that tankage: refrigerated tanks for ammonia, which must be kept cold, and ambient tanks for methanol, which need no refrigeration. The buffer is sized to roughly two weeks of throughput, enough to decouple ship arrivals from whatever consumes the fuel downstream.
This node is offtake-agnostic, and that is the point. The molecule sits in the same tank whether the next step is an ammonia cracker producing hydrogen, a bunkering operation fuelling ships, or a feedstock contract. The storage node does not commit to an end use; it just holds inventory. That neutrality is what lets the cracker and consumption nodes downstream stay open while this node is fully modelled.
What drives the node.
| Parameter | Value | Basis |
|---|---|---|
| Buffer duration | 14 days | Throughput buffer, ship-cadence logic D |
| Ammonia tankage | 8,461 m³ | 14 days at 150 kT/yr, refrigerated D |
| Methanol tankage | 24,276 m³ | 14 days at 500 kT/yr, ambient D |
| Ammonia tank cost | $900/m³ | Refrigerated, ~2.25× ambient E |
| Methanol tank cost | $400/m³ | Ambient atmospheric storage E |
| Storage boil-off | ~0 % | Negligible for both at this scale P |
What the node produces.
| CAPEX line | Basis | Amount |
|---|---|---|
| Ammonia tank (refrigerated) | 8,461 m³ × $900/m³ | $7.61M |
| Methanol tank (ambient) | 24,276 m³ × $400/m³ | $9.71M |
| Destination storage node CAPEX | $17.33M |
Ammonia costs more to hold.
The two molecules diverge most sharply at storage. Methanol sits in ambient atmospheric tanks; ammonia must be kept refrigerated, which carries roughly 2.25 times the cost per cubic metre. Even though ammonia is the smaller volume here, its tankage is a comparable share of the node's cost.
The refrigeration premium on ammonia is a real design cost, not a rounding detail. It means a corridor's storage economics depend heavily on the molecule mix, an ammonia-heavy corridor carries a larger refrigerated-tankage burden than a methanol-heavy one of the same tonnage. A storage developer taking this node prices refrigeration explicitly, and the buffer duration is the main lever: a shorter buffer cuts CAPEX but tightens the margin against late ships.
Where the numbers come from.
Tank costs ($900/m³ refrigerated ammonia, $400/m³ ambient methanol): screening-stage ratios. The 2.25× ammonia premium reflects insulation and refrigeration plant. Both pending vendor quotation.
Buffer (14 days): sized to decouple ship arrivals from downstream draw. Tank volumes derived at 0.68 t/m³ ammonia and 0.79 t/m³ methanol liquid density.
Boil-off (~0%): ammonia and methanol storage boil-off is negligible at this scale, consistent with the transport-leg figures rounding to zero over short holds.
Traces to the Corridor Module (Sim 4). Tank costs are estimates pending quotation. Screening-stage, modelled.
How this node stands alone.
The node holds landed tonnes and releases them on demand. It connects to delivery upstream and to whatever draws the fuel downstream, and it commits to neither molecule's end use.