AAU

— The standard allowance, an “assigned amount unit” (AAU), is equivalent to one metric ton of carbon dioxide emissions. […] In general, these credits can be purchased, sold, and otherwise transferred by private actors through international markets. Unlike AAUs, they are not allocated by a state but rather are generated through voluntary activities undertaken most commonly by private actors.

— […] the AAU […] had not only refused to unsanction the meet but was also said to be contributing funds to bring in foreign competitors […]