(17)The fossil gas and nuclear energy sectors are characterised by rapid technological development. It is therefore necessary to review the technical screening criteria covering energy generation activities in those sectors regularly, as required by Article 19(5) of Regulation (EU) 2020/852. In addition, based on the conditions laid down in Article 10(2) of Regulation (EU) 2020/852, such review should cover the appropriateness of the periods of time laid down in the technical screening criteria.