A New Green Efficiency-Based Carbon Taxing Policy and Its Effects on a Production-Inventory System with Random Carbon Emissions and Green Investment

Table 7

Percentage changes in the decision variables in the second year with respect to the first year.

Firm	% reduction in	% reduction in	% increase in	% reduction in
1	65.78	70.88	14.45	0.12
2	97.24	97.24	NA	550.91
3	70.09	70.08	16.28	0.20
4	68.78	68.78	16.24	0.41
5	67.43	67.41	13.74	0.78

Firm 2’s results are quite different from other firms. This happens due to insufficient green budget. Budget is far less than its optimum value.