NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Will the Paris Accord Accelerate Climate Change?

Laurence J. Kotlikoff, Andrey Polbin, Andrey Zubarev

NBER Working Paper No. 22731
Issued in October 2016
NBER Program(s):EEE, LS, PE

The 2015 Paris Accord is meant to control our planet’s rising temperature. But it may be doing the opposite in gradually, rather than immediately reducing CO2 emissions. The Accord effectively tells dirty-energy producers to "use it or lose it." This may be accelerating their extraction and burning of fossil fuels and, thereby, be permanently raising temperatures.

Our paper uses a simple OLG model to illustrate this long-noted Green Paradox. Its framework treats climate damage as a negative externality imposed by today’s generations on tomorrow’s – an externality that is, in part, irreversible and can tip the climate to permanently higher temperatures. In our model, delaying abatement can lead to larger changes in climate than doing nothing, reducing welfare for all generations. In contrast, immediate policy action can raise welfare for all generations.

Finally we question the standard use of infinitely-lived, single-agent models, which assume, unrealistically, intergenerational altruism in determining optimal abatement policy. Their prescriptions can differ, potentially dramatically, from those needed to correct the negative climate externality today’s generations are imposing on tomorrow’s.

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Document Object Identifier (DOI): 10.3386/w22731

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