In addition to communication through the Balancing Market System as described in Article 2.4 or otherwise specified in this Rulebook, any notice or other communication in the context of or in connection with this Rulebook shall be conducted by personal delivery, or by post, fax or email, and shall be addressed to the representative of the other party, as defined in the Balancing Service Contract / Balance Responsible Party Contract, or as notified by the registered Participant.

In particular, for any communication concerning (i) the conclusion of the Balancing Service Contract/Balance Responsible Party Contract pursuant to Article 4.2, communication shall be conducted by personal delivery only or by post, with proof of receipt, or (ii) the termination thereof, according to Article 4.4, by bailiff service.

All notices and other communications, shall be deemed to have been received by the party they are addressed to, as follows:

a) in case of personal delivery or delivery by post, at the time of delivery,

b) in case of fax, at the time indicated on the proof of delivery of the sender's facsimile machine,

c) in case of e-mail, at the time the e-mail was sent, indicated on the proof of sending.

If a notification or other announcement has been received outside the working hours of a business day, it shall be deemed to have been received at the beginning of the working hours on the following business day.