| Operator of storage facility | Crude oil | Petroleum products | Natural gas | Term of custody agreement |
|---|---|---|---|---|
| HEXUM Tank Storage Plc. | 480 tcm | 440 tcm | – | Permanent custody agreement |
| Product Storage Plc. | – | 486 tcm | – | 31/12/2026 |
| HEXUM Natural Gas Plc. | – | – | 12,723,644 MWh | Permanent custody agreement |
| MOL Hungarian Oil and Gas Plc. | – | 14,200 tons | – | 31/12/2031 |
| MOL Hungarian Oil and Gas Plc. | 150,570 tons | 150 tcm | – | 31/12/2026 |
| MOLTRADE-Mineralimpex Co. Ltd. | 48,000 tons | – | – | 31/12/2032 |
Custody agreements can be viewed at the headquarters of the Hungarian Hydrocarbon Stockpiling Association by prior appointment.