This study characterizes the distribution chain of liquefied natural gas (LNG) in Poland, using the terminal in
Świnoujście as the “source of LNG”. The focus is primarily on the possibility of LNG distribution for road
transport, taking into account the effective use of its energy potential. During the transport and storage of LNG
it was found that the evaporation of LNG, the so-called boil-off gas (BOG), is a significant problem that leads to
an increased pressure in the tank. Therefore, the possibility of using BOG in individual links of the LNG supply
chain is indicated. One prospect is its compression to high pressure, which produces compressed natural gas
(CNG) fuels. Thus, this paper specifies the influence of the initial BOG gas pressure on the unit compression
work and analyses the change in the compression unit work, which depends on the final CNG fuel pressure,
with a specific assumption for the BOG pressure.