has. by 50%, if the activity level of the attribution element is reduced by at least 50% and by less than 75%; b. 75%, if the activity level of the attribution element is reduced by at least 75% and by less than 90%; vs. by 100%, if the activity level of the attribution element is reduced by at least 90%. SL Increase in the quantity of emission rights allocated free of charge ¹ The quantity of emission rights allocated each year free of charge to a company covered by the ETS is increased when a physical modification of a fixed installation or the construction of a new fixed installation leads to an increase of at least less than 10% of the installed capacity of an allocation element.