CO2 allowances are issued by each RGGI State in an amount defined in each state's applicable statute and/or regulations. Together, all the CO2 allowances issued by all the RGGI States comprise the RGGI cap.
The RGGI 2017 cap is 84.3 million short tons.
The RGGI 2017 adjusted cap is 62.4 million short tons. 62.4 million is the number of CO2 allowances allocated by the RGGI states for 2017.
For more details on the distribution of CO2 allowances by state, download the full data here: [ PDF ] [ XLS ]