LANDFILL gas (LFG), which mainly includes methane, is a greenhouse gas collected by extraction systems, released into the air, or directly used to generate electricity. The paper measured the temperature of landfill gas (LFG) on biothorns, at the landfill in Nish, and investigated the possibility of utilizing the potential of landfill gas before its closure. Infrared thermographic method (IF) of radiation was used to test the QUANTITY of methane on the passive system. The paper concludes that heat and gases are released that cannot be further used for the production of electricity in thermal power plants. Analyzing the results, no thermal irregularities in the immediate environment were observed, and the conclusion is reached that the passive GASA degassing system has no impact on the environment.