A self-sufficient system for evaporation of liquefied natural gas (LNG) comprising an evaporation station which is configured to receive LNG at very low pressure and temperature and to provide natural gas (NG) at high pressure and low temperature, a heat pumping station which is configured to implement a closed-loop refrigeration cycle using a mixed refrigerant as working fluid and a main heat exchanger which is fluidly coupled to the evaporation station and the heat pumping station and is configured to transfer heat from the heat pumping station to the evaporation station in order to evaporate LNG and supply NG downstream the main heat exchanger. The evaporation station comprises a pump and a expander, the expander drives the pump. The heat pumping station comprises a second pump and a second expander, the second expander drives the second pump.