Thailand’s imported energies include coal, crude oil, natural gas, petroleum product or oil and electricity. The energy import dependency index is represented by the net energy import dependency (NEID), which is defined as net energy imports as a percentage of TPES during 2005–2050. In the base year the import crude oil is 41.3 Mtoe, representing the largest share of imported energies. In the BAU scenario, imported energy accounts for more than half of all TPES. The NEID of the CM scenarios slightly decreases when they respect to the TPES in the corresponding case (NEIDa). While the NEID which compared to the TPES in the BAU (NEIDb) are further decreased (see Table 8). GHG mitigation policies bring down the imported energy in all scenarios when compared with the BAU scenario. The percentages of imported energy to TPES in the scenarios with GHG mitigation policy are 45.2–48.1% in 2030 and drop to 33.7–46.4% in 2050.