This document updates technical paper FCCC/TP/2007/1 on information relevant to the mitigation potential and the identification of possible ranges of emission reduction objectives of Parties included in Annex I to the Convention (Annex I Parties). It provides information on different approaches to determining emission reductions by Annex I Parties, synthesizes submissions by Parties, presents updated data on relevant factors and indicators, and summarizes results from studies on mitigation potential by national and international organizations