As detailed in the last part of the factsheet
Gender Equality: a strengthened commitment in Horizon Europe,
for calls with deadlines in 2022 and onwards, having a Gender Equality
Plan (GEP) will be an eligibility criterion for all public bodies,
higher education institutions and research organisations from EU Member
States and associated countries wishing to participate in Horizon
Europe.
As also recalled in the General Annexes to Horizon Europe 2021-2022 work programme, to comply with the eligibility criterion, a GEP must meet 4 mandatory process-related requirements or ‘building blocks’.
Details about the requirements of the Gender Equality Plan can be found on the website of the European Commission.