GHG Calculation, Nabisy Reporting, and UDB Maintenance for Biomethane

We assist plant operators with GHG calculations, Nabisy reporting, and UDB maintenance for biomethane—from establishing a reliable data foundation to ensuring formal and timely processing, all the way through to audit-proof documentation. In this way, we secure a key revenue stream in the biomethane market and reduce regulatory risks.

Current situation and common challenges

GHG, Nabisy, and UDB processes involve significant formal, regulatory, and operational requirements for biomethane plants. Ever-changing legal requirements, complex calculation logic, and error-prone interfaces between the plant, traders, auditors, and regulatory authorities make it difficult to ensure consistent and reliable processing. Errors in these processes can have immediate economic consequences — ranging from delayed marketing to clawbacks or the revocation of volumes.

Typical challenges in this context include, in particular:

Dynamic regulatory requirements and complex calculation logic
Error-prone interfaces between the facility, the trader, the auditor, and the regulatory authority
Stringent formal requirements in Nabisy and new guidelines from the UDB
Common risk areas such as incorrect emission factors, incomplete reports, and inconsistencies
Financial risks due to delayed marketing, revocation of allowances, or clawback claims

Biogasanlage für die THG-Berechnung von Biomethan

Our structured consulting approach

We support facility operators throughout the entire GHG-related compliance process — from data collection and calculation to reporting and reconciliation across the supply chain. We not only assist with individual steps in the process but also ensure a consistent, timely, and audit-ready overall framework.

01. GHG calculation

We calculate greenhouse gas reductions in accordance with the 38th BImSchV, validate input data, assess the reliability of the data set, and assist in optimizing regulatory emission factors. The goal is to produce an accurate emissions inventory to serve as the basis for further processing.

02. Nabisy-Management

We assist with the creation, maintenance, and quality assurance of data records in the Nabisy system, support volume reporting and documentation, and assist with coordination with auditors as well as with correction reports. In this way, we ensure that all processes are handled formally and in a timely manner.

03. UDB implementation & maintenance

We assist with the setup and maintenance of the Union database, help with data reconciliation with supply chain partners, and support ongoing updates and monitoring. In addition, we prepare processes for system audits and new requirements.

04. Consistency, audit assurance & continuous improvement

We help ensure that data flows, documentation, and interfaces are set up consistently, identify potential sources of error early on, and continuously adapt processes to regulatory developments. In this way, we create a robust, audit-ready, and financially sound process structure.

The benefits for you as an operator

Errors in GHG calculations, Nabisy processes, and UDB processes have a direct economic impact. Our goal is therefore to ensure that these processes are not only compliant with regulations but also robust, transparent, and marketable. In this way, we reduce operational risks, ease the burden on internal teams, and lay the groundwork for seamless GHG marketing.

Reducing the workload on internal teams

Avoiding recoupments

Minimizing regulatory risks

Transparent and audit-proof documentation

Ensuring the marketability of GHG credits

Do you want to set up your GHG, Nabisy, and UDB processes correctly?

We assist plant operators with GHG calculations, Nabisy reporting, and UDB maintenance for biomethane — in a structured, timely manner, and with a clear focus on marketability and audit readiness.