Have you got a link to show that this wouldn't be compulsory?
I already posted a link to the guardian's report, which Hans quoted. https://www.theguardian.com/uk-news...-go-forward-change-2019-daylight-savings-time
There's also this one: https://www.dw.com/en/eu-parliament-votes-to-end-daylight-savings/a-48064185
"Under the proposals, each member state would decide whether to continue with twice-a-year clock changes or stick permanently to summer or winter time.
Clock ticking
All 28 member states would need to inform the European Commission of their choice ahead of the proposed switch, by April 2020. They would then coordinate with the bloc's executive so that their decisions do not disrupt the functioning of the single market."
and this one: https://www.thelocal.de/20190304/cl...ropean-parliament-meets-to-discuss-its-future
" The European Parliament’s Traffic Commission has voted 23 to 11 to abolish daylight savings in the EU, effective 2021.
The vote is not final however, with the Council of Member States still requiring a vote on the matter in order to get a Europe-wide consensus.
If the Council votes to abolish daylight savings, each member state will have to decide themselves whether or not to implement the change.
This could potentially be problematic, particularly in the case that some member states make the move and others decide against it."