The additionality rules are currently being reviewed, which has the potential to change the ability of large investors to access carbon units for afforestation projects.
Mae'r rheolau ychwanegedd hyn wrthi'n cael eu hadolygu ar hyn o bryd, a allai newid gallu buddsoddwyr mawr i gael gafael ar unedau carbon ar gyfer prosiectau coedwigo.