nature & planetWikipedia2005

A UN carbon credit scheme paid companies to make a refrigerant gas just to destroy its waste

the gist

In 2005 the UN Intergovernmental Panel on Climate Change started a carbon credit scheme to reduce greenhouse gases. Companies that destroyed polluting gases earned credits that could eventually be turned into cash. The rules set high rewards for destroying HFC-23, a byproduct of making the refrigerant HCFC-22. Companies responded by producing more refrigerant, so they could destroy more of the waste gas and collect millions in credits. The extra production also pushed the refrigerant's price down, which encouraged firms to keep using it despite its environmental harm. The European Union suspended credits for destroying HFC-23 in 2013.

so what

It is a classic example of a perverse incentive, where a policy meant to cut emissions accidentally increased production of a potent gas. It shows why incentives must be checked for unintended side effects.

fun fact

HFC-23 is a potent greenhouse gas with a very high global warming potential.

more on this

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