“Cap-and-trade” means a government authority establishes a cap that


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“Cap-and-trade” means a government authority establishes a cap that

  • “Cap-and-trade” means a government authority establishes a cap that

  • limits the total amount of pollution allowed,

  • and then distributes allowances for “permission to pollute” the global atmosphere, which can be traded as private property.

  • The amount of greenhouse gas emissions permitted declines each year, creating demand for a new commodity: carbon permits.

  • When offered enough money (or faced with high enough costs), polluters who own permits (or need permits) will reduce their emissions.

  • These trades establish a market price for greenhouse gas pollution.



Each chair represents the “permission to pollute”:

  • Each chair represents the “permission to pollute”:

  • one metric ton of carbon dioxide (1 mtCO2)

  • or an equivalent amount of any other greenhouse gas















Players seek better options as costs rise.

























All credits to Dr. Holmes Hummel of the University of California

  • All credits to Dr. Holmes Hummel of the University of California

  • Google ‘Climate Policy Design for complete curriculum

  • These slides were taken from her site, which is available for your use as well – a great resource of explaining climate policy to your colleagues and members.





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