The paper develops a model in which a country with better technology for abatement of Green House Gas (GHG) emission (the North) commits to an international protocol to keep the global GHG emission within a specified limit while it helps the mitigation effort in the other country (the South) with unconditional transfer of abatement technology. It finds out in the autarkic (no trade) equilibrium the technology transfer offer from the North is always accepted by the South. The North may offer either a partial or a complete technology transfer. If partial technology transfer is offered it finds out the determinants of the extent of technology transfer. Then it compares the autarkic equilibrium with equilibrium where trade with complete specialization occurs and finds out that trade limits the scope of technology transfer as an instrument for mitigation of global GHG emission.