A split mixed
refrigerant ("MR")
natural gas liquefication
system, where low-pressure ("LP") and
medium pressure ("MP") MR compressors are driven by a first gas
turbine and a
propane compressor and a high-pressure ("HP") MR compressor is driven by a second gas
turbine, is disclosed. The split MR liquefication
system is configured to adjust the characteristics of the HP MR compressor to require less power when less power is available and more power when more power is available compared to the
system's design point. Such adjustments allow for shifting the balance of power between the
propane compressor and the HP MR compressor to improve LNG production efficiency.