Article 30c 2.

The Union-wide quantity of allowances issued under this Chapter each year from 2028 shall decrease in a linear manner beginning from 2025 on the basis of the average emissions reported under this Chapter for the years 2024 to 2026. The quantity of allowances shall decrease by a linear reduction factor of 5,38 %, except if the conditions set out in point 1 of Annex IIIa apply, in which case the quantity shall decrease by a linear reduction factor adjusted in accordance with the rules set out in point 2 of Annex IIIa. By 30 June 2027, the Commission shall publish the Union-wide quantity of allowances for 2028 and, if required, the adjusted linear reduction factor.