AS4 market communication for gas

When will AS4 be introduced for gas market communication in Germany?

The changeover to AS4 in the gas sector will take place in several phases and must be completed by 01.04.2025 at the latest. Please note that the introduction of AS4 in the schedule process (due 01.12.2024) partly takes place in parallel. If you act as balance responsible party (BRP) or transmission system operator (TSO) and are affected by both process changes, we recommend early planning.

Maximum automation for the AS4 changeover with Z1 Energy MarketCommunication

Automatic path switch

The changeover to AS4, also known as path switch, takes place before the first exchange of actual productive data: One market partner asks the other market partner to switch the communication channel from email to AS4. In Z1 Energy MarketCommunication, you can configure whether this process should take place automatically for all market partners or for individual market partners. Especially if you have many external market partners, this feature can save you a lot of work during the changeover.

Automated handling of AS4 certificates

You can order AS4 certificate triples directly via Zertificon in conjunction with our Z1 Energy MarketCommunication solution. We offer certificates issued by the registered sub-CA DARZ.CA. In addition to procurement, Z1 Energy MarketCommunication also manages your own AS4 certificates and finds, validates, and stores the AS4 certificates of your external market partners.

Z1 Cryptographic Module – a low-cost HSM alternative

An HSM is not mandatory for everyone. If your company acts as passive external market participant, it can comply with the required security level 1 by using our significantly more cost-effective Z1 Cryptographic Module.

Connecting to your ERP/B2B applications

Our AS4 solution can be seamlessly integrated into all specialist applications (ERP, B2B). This works either via a REST API or an email interface.