Z1 Energy

Market Communication for the German Energy Market

Secure electronic exchange for all market processes: Electricity, Gas, Scheduling, API Web Services, Redispatch 2.0, Traction power network

Market communication energie sector EDI@Energy

Z1 Energy – the communication solution for the energy sector

Our solution Z1 Energy is an all-in-one package for secure and efficient data exchange in the German energy sector. It automates the sending and receiving of AS4 messages, emails, and communication via API Web Services – helping you meet the Federal Network Agency’s requirements on time and with minimal effort.

Processes at a glance

Electricity

Gas / Schedule data Gas

Schedule data electricity

Redispatch 2.0

API Web Services

Traction power network

Z1 Energy – Benefits at a glance

Automated handling of certificates – yours and those of your market partners

Zertificon is a specialist in automated certificate management for email, AS4 and EMT.API certificates. Z1 Energy handles the entire lifecycle of certificates: from procuring and managing your own certificates to searching for the certificates of your market partners.

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Cost-effective alternative to HSM: Z1 Cryptographic Module

The Z1 Cryptographic Module generates, stores and uses the private keys in a cryptographically protected area. As a passive external market participant, you are not required to use an HSM under the Smart Metering PKI guidelines. Our Z1 Cryptographic Module, which complies with Security Level 1, is an affordable alternative to an HSM.

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Flexible integration of business applications

Z1 Energy can be easily integrated into your business applications (ERP, B2B) via a REST API or an email interface. You can flexibly choose which interface to use for each internal market partner. Using different applications for different market processes? Z1 Energy integrates them all.

Clear and structured clearing case management

If messages cannot be processed correctly – due to outdated algorithms or technical issues of your communication partners – they are logged as a clearing case. Depending on the Z1 Energy ERP Adapter you use (Email or REST), cases are routed to a dedicated inbox or transferred directly into your system. This enables you to process cases in a structured and transparent manner.

Z1 Energy on-premises, in the cloud or as Software as a service (SaaS)?

Software as a Service via MSSP partners

We can connect you with one of our Managed Security Service Providers (MSSP) who can operate the system on your behalf. This reduces the workload on your IT team and frees up valuable time to focus on growing your business. If you are interested, simply write us a note in the free text area of our inquiry form.

On-premises and in the cloud

Z1 Energy can be quickly and easily integrated into your existing infrastructure. It is compatible with the following virtualization platforms and cloud providers:

Easily implement EDI@Energy adjustments – how our energy customers benefit

We think ahead so you can focus on your core business. The German energy market is constantly evolving: with new regulations, technical standards, and tight deadlines that are posing ongoing challenges. With our Z1 Energy solution, we help you implement adjustments efficiently, on time, and with ease. Energy suppliers have been our customers since 2007. Our extensive experience in the energy sector drives continuous innovation, ensuring you benefit from a high-performance solution that remains compliant for the long term. Our expertise lies in automated certificate management – for email, AS4, and Web API certificates. With Z1 Energy, you can reduce manual effort, eliminate errors, and adhere to the highest security standards. Here is a selection of our reference customers:

“Choosing Zertificon was the right decision and we couldn’t be happier. Zertificon’s solution enables us to meet all market communication demands and operating the gateway requires minimal effort. The administrative part is straightforward, and new team members get up to speed quickly.”

Martin Rieger, IT Manager

To the case study

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Frequently asked questions

AS4 (Applicability Statement 4) is a secure communication protocol for electronic data exchange based on web services (SOAP/XML). It replaces older protocols such as AS2 or S/MIME-encrypted emails and provides a high level of protection against unauthorized access and tampering through encryption and digital signatures. The Federal Network Agency has made the use of AS4 mandatory for market communication in Germany’s electricity and gas sectors, aiming to make communication more secure, standardized, and efficient.

As part of the regulatory changes for the “24h-Lieferantenwechsel” starting on June 6, 2025 (Federal Network Agency resolution BK6-22-024), the EDI@Energy regulations require a new process for identifying market locations (MaLo), including the use of API Web Services. These changes affect only the roles of LF (supplier) and NB (network operator).

No, passive external market participants are not required to use an HSM in accordance with the specifications of the BSI’s Smart Metering PKI. The Z1 Cryptographic Module offers a cost-effective solution that meets all relevant security requirements.

Yes, Z1 Energy can be operated as Software-as-a-Service (SaaS) via our Managed Security Service Providers (MSSP). We can connect you with a suitable MSSP partner.
Inquire now

We provide professional manufacturer support from our highly qualified technicians based in Berlin. Support is available in German and English, and optionally 24/7. Our customers benefit from fast response times and direct contact with our experts who support Z1 Energy.