Facts & figures
| Member (associations) | Country | Storage capacity (1000 M3) | Number terminals | Member companies |
| Assocostieri | Italy | 4.560 | 32 | 12 |
| Asterquigas | Spain | 8.595 | 49 | 6 |
| BATO | Belgium | 3.423 | 12 | 12 |
| TSA | United Kingdom | 5.200 | 44 | 10 |
| USI | France | 11.179 | 48 | 14 |
| UTV e.V. | Germany | 10.420 | 72 | 16 |
| VOTOB | Netherlands | 10.020 | 17 | 12 |
| Associated members (companies) | ||||
| Dong Energy Oil Terminals | Denmark | - | - | - |
| Nordic Storage AB | Sweden | - | - | - |
| Poliport | Turkey | - | - | - |
| Scandinavian Tank Storage AB | Sweden | - | - | - |
| Solventas | Turkey | - | - | - |
| Ventsplis Nafta Terminals LTD | Latvia | 1.195 | - | - |
| Total: | 54.592 | 274 | 82 | |