When the system goes through periods of low rigour where companies can accumulate a lot of credits, those credits may be of questionable quality—for example, if they come from the tree-planting sector. That creates downward pressure on credit prices in the future.
There are ways to reduce the impact of this credit bank, and that is already being considered right now. However, I encourage the government to move forward on this issue. The idea is to implement a somewhat dynamic system that changes the performance points set in each industry or reduces the number of credits distributed in the system dynamically based on supply and demand in order to maintain a price.
There is another solution, which would be simpler, or at least could be complementary. It would be to clearly announce that the system will be extended beyond 2030. Extending the system encourages businesses to keep part of their credit bank for subsequent years. That way, the current bank of accumulated credits would not flood the market in 2030, since it would be gradually distributed over a longer time frame—for example, through 2045. The annual impact of the credit bank would therefore be much lower.