Strategic Carbon Taxation, Emissions and Welfare

Appelbaum, Elie and Melatos, Mark (2025): Strategic Carbon Taxation, Emissions and Welfare.

Abstract

We model equilibrium carbon emissions and welfare in an imperfectly competitive two-country world in which countries strategically choose carbon taxes to maximize national welfare. Each country trades off total national surplus and the cost of global carbon emissions, but differs in its degree of concern about global emissions (CAE) and in its carbon efficiency (CE). We show that CAEs and CEs influence the strategic interaction between countries and, hence, Nash equilibrium carbon taxes, emissions and welfare. Our simulations demonstrate that there is no clear-cut relationship between equilibrium emissions and welfare. While an increase in one country’s CAE reduces global emissions -and global welfare - individual country emissions and welfare may rise or fall. Moreover, an increase in a country’s CE does not guarantee lower emissions or higher welfare nationally or globally. Our results suggest that international trade can reduce global emissions; consumers can access more carbon-efficient sources of production.

• Item Type: MPRA Paper
• Language: English
• Keywords: Optimal carbon taxes, carbon emissions, strategic carbon taxes, best-reply functions, carbon efficiency, emission aversion.
• Subjects: F - International Economics > F1 - Trade > F12 - Models of Trade with Imperfect Competition and Scale Economies ; Fragmentation; F - International Economics > F1 - Trade > F13 - Trade Policy ; International Trade Organizations; F - International Economics > F1 - Trade > F18 - Trade and Environment; Q - Agricultural and Natural Resource Economics ; Environmental and Ecological Economics > Q5 - Environmental Economics > Q54 - Climate ; Natural Disasters and Their Management ; Global Warming; Q - Agricultural and Natural Resource Economics ; Environmental and Ecological Economics > Q5 - Environmental Economics > Q55 - Technological Innovation; Q - Agricultural and Natural Resource Economics ; Environmental and Ecological Economics > Q5 - Environmental Economics > Q58 - Government Policy

References

Acemoglu, D., P. Aghion, L. Bursztyn and D. Hemous, (2012) “The Environment and Directed Technical Change,” American Economic Review, 102(1),131-166.

Alessandro, A., V. Costantini, C. Martini, L. Salvatici and M.C. Tommasino (2013) “Assessing alternative solutions to carbon leakage,” Energy Economics, 36, 299-311.

Barrett, S. (1994) ”Strategic environmental policy and international trade,” Journal of Public Economics, 54, 325-338.

Belfiori, M.E., (2017) “Carbon pricing, carbon sequestration and social discounting,” European Economic Review, 96, 1-17.

Brock, W., (1973) “A polluted golden age,” Smith V.L. (Ed.), Economics of Natural and Environmental Resources, Gordon and Breach, New York, 441-461.

Copeland, B. and M.S. Taylor (2004) ”Trade, Growth and the Environment,” Journal of Economic Literature, 42, 7-71.

Dietz, S. and F. Venmans, (2019) “Cumulative carbon emissions and economic policy: In search of general principles,” Journal of Environmental Economics and Management, 96, July, 108-129.

Grubb M., C. Wieners and P. Yang, (2021) “modelling myths: On DICE and dynamic realism in integrated assessment models of climate change mitigation,” Wiley Interdisciplinary Reviews (WIREs) Climate Change, 12(3), 1-26.

Golosov, M., J. Hassler, P. Krusell and A. Tsyvinski (2014) “Optimal Taxes on Fossil Fuel in General Equilibrium,” Econometrica, 82(1), 41-88.

Harstad, B. (2012) “Buy coal! a case for supply-side environmental policy,” Journal of Political Economy, 120(1), 77–115.

Kotlikoff, L., F. Kubler, A. Polbin, J. Sachs and S. Scheidegger (2021), “Making carbon taxation a generational win win,” International Economic Review, 62: 3-46.

Lapan, H.E and S. Sikdar (2011) ”Strategic Environmental Policy under Free Trade with Transboundary Pollution,” Review of Development Economics, 15(1), 1-18.

Melatos, M. (2002) Modelling Regional Trade Agreements, PhD Dissertation, University of Sydney.

Nordhaus, W.D. (1992) “An optimal transition path for controlling greenhouse gases,” Science, 258 (5086), 1315-1319.

Nordhaus, W.D. (2017) “Revisiting the Social Cost of Carbon,” Proceedings of the National Academy of Sciences, 1518–23.

OECD (2006) “The Political Economy of Environmentally Related Taxes.” OECD, Paris.

Sinn, H.-W. (2008) “Public policies against global warming: a supply side approach,” International Tax and Public Finance, 15(4), 360–394.

Stern, N., (2008) “The economics of climate change,” American Economic Review, 98(2), 1–37.

Van der Ploeg, F., and A. Rezai (2019) “Simple rules for climate policy and integrated assessment,” Environmental and Resource Economics, 72, 77–108. 39