In the Swiss method, GHG emission obviously dominates other two impacts since it sets a very intensive reduction target of 80% under 1990 levels or one fifth of 2009 levels. This is because of their leading and undertaking role in global GHG mitigation. So, this makes the other impacts much less significant. Another point is that the Swiss economy, being based on service sectors including only small contribution from agriculture (11%) and heavy industries (7%), has low GHG emissions (UNFCCC, 2014). That is the reason why the national flow used as normalization flow is fairly low. Hence, this results in a high Eco-factor for GHG compared to other countries. Although Japan is also a developed country, energy demand of the industrial sector as well as the urban population is still increasing. In 2007, the total GHGs emitted by Japan were 1374 Mt CO2e (excluding LULUFC, 30-times larger than Switzerland). Moreover, they expected to reduce 25% below the 1990 levels or 23% from present. The Japanese Eco-Factor is therefore weaker than the Swiss one. On the other hand, Thailand being a Non-Annex-1 country did not set the reduction target based on 1990 levels. According to the recent NAMAs pledged, Thailand has committed to decelerate the GHG emissions compared to BAU by 2020. Notwithstanding, at that target year Thailand is allowed to increase GHG emissions compared to 2011 (394 / 497 Mt CO2e) which results in a rela- tively low GHG Eco-Factor (as compared to the other countries).