Successful negotiations at the climate summit in Katowice (COP24) in December 2018 enabled the establishment of a uniform framework of national contributions and a common methodology for reporting greenhouse gas (GHG) emissions. However, some contentious issues could not be resolved, including the mechanism for trading emissions reductions or the length of the periods for presenting national contributions. The Polish presidency of COP24 is now tasked with setting the conditions for finding compromise on these matters before the next climate summit in Chile.