Table 1.

Global SCC by different assumptions

Scenario	Assumption	2015	2020	2025	2030	2050
Base parameters
	Baseline*	31.2	37.3	44.0	51.6	102.5
	Optimal controls†	30.7	36.7	43.5	51.2	103.6
2.5 degree maximum
	Maximum†	184.4	229.1	284.1	351.0	1,006.2
	Max for 100 y†	106.7	133.1	165.1	203.7	543.3
The Stern Review discounting
	Uncalibrated†	197.4	266.5	324.6	376.2	629.2
Alternative discount rates*
	2.5%	128.5	140.0	152.0	164.6	235.7
	3%	79.1	87.3	95.9	104.9	156.6
	4%	36.3	40.9	45.8	51.1	81.7
	5%	19.7	22.6	25.7	29.1	49.2

The SCC is measured in 2010 international US dollars.

^*Calculation along the reference path with current policy.

^†Calculation along the optimized emissions path.