(1)The relevant national authority may make provision by regulations for trading schemes relating to greenhouse gas emissions.
(2)A “trading scheme” is a scheme that operates by—
(a)limiting or encouraging the limitation of activities that consist of the emission of greenhouse gas or that cause or contribute, directly or indirectly, to such emissions, or
(b)encouraging activities that consist of, or that cause or contribute, directly or indirectly, to reductions in greenhouse gas emissions or the removal of greenhouse gas from the atmosphere.