Based on the Scheme eligibility criteria set out in section 5.4 of the Rulebooks.

Yes.

The data will usually be handled first by a relevant NASO as described in the EPC Payment Scheme Management Rules.

This is set out in the Rulebook. In short:

Under the answer to Question 3 above, arrangements for providing a future date for registration are explained.

An Applicant must supply a Readiness Date in the schedule to the Adherence Agreement (see response to Question 3).

Yes. That is possible because each Applicant will be required to state a Readiness Date in the Schedule to the Adherence Agreement.

The EPC maintains a Register of Participants for each Scheme. These Registers are published on the EPC website.

The process for adherence is set out in the EPC Payment Schemes Management Rules (which form an integral part of the Rulebooks) and in the Adherence Guide (EPC012-17).