1. From 2027, allowances covered by this Chapter shall be auctioned, unless they are placed in the market stability reserve established by Decision (EU) 2015/1814. The allowances covered by this Chapter shall be auctioned separately from the allowances covered by Chapters II and III of this Directive.

2. The auctioning of the allowances under this Chapter shall start in 2027 with an amount corresponding to 130 % of the auction volumes for 2027 established on the basis of the Union-wide quantity of allowances for that year and the respective auction shares and volumes pursuant to paragraphs 3 to 6 of this Article. The additional 30 % to be auctioned shall only be used for surrendering allowances pursuant to Article 30e(2) and may be auctioned until 31 May 2028. The additional 30% shall be deducted from the auction volumes for the period from 2029 to 2031. The conditions for the auctions provided for in this paragraph shall be set in accordance with paragraph 7 of this Article and Article 10(4).

In 2027, 600 million allowances covered by this Chapter shall be created as holdings in the market stability reserve pursuant to Article 1a(3) of Decision (EU) 2015/1814.