The costs to business associated with the scheme relate to both the cost of purchasing allowances (at higher prices than if no action was taken) or the cost of abatement motivated by the carbon price.
Mae’r costau i fusnesau sy’n gysylltiedig â’r cynllun yn ymwneud â chost prynu lwfansau (ar brisiau uwch na phe na bai camau’n cael eu cymryd) neu’r gost o leihau a achosir gan y pris carbon.