Implementing Regulation (EU) 2020/1148 is amended as follows:

in Article 2, the following points (34) and (35) are added:

“Level-shift factor” means a factor determined by the ratio between the price changes obtained using current and new production methods, whereby the price change is measured from a calendar year to the price reference period, respectively:

The chained index in December of year , using the current production method, is denoted by . The annual average of this index in any calendar year y before the current year t is denoted by ChI y . Similarly, the chained indices, using the new production method, are denoted by ChI New . The indices ChI and ChI New can have different index reference periods.

in Chapter 2, the following Article 22 is added:

COMMISSION IMPLEMENTING REGULATION (EU) 2024/1720 of 20 June 2024 amending Regulation (EU) 2020/1148 as regards the index compilation of the harmonised indices of consumer prices