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ID 33354
file
creator
subject
Emission subsidy
Emission tax
Emission reduction
Environmental R&D
Cournot duopoly
NDC
Economics
description
This paper reexamines the Poyago-Theotoky model and provides additional investigation that was conducted under a corrected environmental damage parameter. As new findings, we obtain the following. First, social welfare under a time-consistent emission tax (emission subsidy) policy is always welfare-enhancing rather than the case of laissez-faire. Second, if the environmental damage parameter is sufficiently small, then the equilibrium emission tax rate is invariably negative. It is therefore an emission subsidy. Moreover, total emissions under the emission subsidy become smaller than those under laissez-faire if the damage parameter is sufficiently small, and if the R&D cost is low. However, total emissions under the emission subsidy become greater than those under laissez-faire if the damage parameter is sufficiently small, and if the R&D cost is high.
journal title
IDEC DP2 Series
volume
Volume 2
issue
Issue 13
start page
1
end page
10
date of issued
2012-09
publisher
広島大学大学院国際協力研究科
SelfDOI
language
eng
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School for International Development and Cooperation
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