The Net Emissions Impact of HFC-23 Offset Projects from the Clean Development Mechanism

Clayton Munnings (), Benjamin Leard and Antonio Bento ()
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Clayton Munnings: Resources for the Future

RFF Working Paper Series from Resources for the Future

Abstract: Ideally, carbon offset programs issue each project a number of offset credits equal to the number of reductions in carbon emissions it achieves. Realistically, any one project likely receives more or less offset credits than the emissions it reduces. Therefore, the net emissions impact of offset programs depends on the relative magnitude of over- and under-crediting. We apply a theoretical framework that differentiates between credited offsets and realized emissions reductions to quantify the net emissions impact of hydrofluorocarbon-23 (HFC-23) projects, which have traditionally dominated the supply of credits within the Clean Development Mechanism (CDM). In our analysis, we account for perverse incentives created by CDM methodologies and for conservative aspects of CDM methodologies. We find it likely that under-credited emissions reductions nearly equal the supply of over-credited offsets, implying that CDM HFC-23 projects effectively have little impact on net emissions and thereby maintain their environmental integrity, on average. Ignoring the supply of under-credited emissions in the context of CDM HFC-23 projects therefore exaggerates the influence of perverse incentives created by CDM methodologies that lead to over-credited offsets.

Keywords: carbon offsets; China; environmental accounting; cap and trade; policy instruments and evaluation; climate policy; Clean Development Mechanism (search for similar items in EconPapers)
JEL-codes: D01 Q54 Q56 (search for similar items in EconPapers)
Date: 2016-01-15
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