Mechanism to allocate capacity in a transmission pipeline or an LNG gasification facility under the open access method. In principle governments, regulators want capacity to be allocated in a transparent manner that will be best suited to the objectives at hand. The mechanism for allocating capacity in an LNG gasification facility can include: open season, first come first served, pro rata basis, auction, or slots. From the accepted methods of allocating capacity under open access, three have become the most common: open season, first come first served, pro-rata allocation and priority allocation. The open season and the first come first served systems are good as long as there is significant demand in the system, at least half of the facility’s capacity. The priority allocation system is usually used in case when there is more demand than supply