The detailed rules and test tasks to be taken into account in the context of invoicing, as well as the identifiable cases of error and the relevant information to be provided are expanded with each EEG amendment, and the relevant machine-based algorithms are refined in parallel. The project includes the identification and specification of such test tasks and the implementation or enhancement of the associated database functions, their connection to both the EEG2.0 application and the EEG Internet portal as well as the formulation and maintenance of corresponding error messages and advice notes and, where applicalble, also the workflow control depending on the respective test result.
The transmission provider processes the EEG using a Java-based distributed application with the Apache TomEE application server and Oracle as the database, and on their customers' side within their EEG-Internet web portal based on the Apache Tomcat web server as well as another Oracle database.
According to the Renewable Energy Sources Act (EEG), a transmission provider has the following responsibilities: (a) Discharge and reimbursement of the energy received by the distribution system operators within the transmission provider's control area, as defined by EEG, and the accruing market premiums in the case of direct marketing. (b) Recording the energy received (quantity and chronological sequence) and the reimbursement payments made. (c) Horizontal adjustment: Adjusting the received energy and the reimbursements provided among the 4 transmission providers in Germany. (d) Marketing the energy remaining with the transmission provider after horizontal adjustment. (e) Proportionate distribution of the incurred costs to all electricity supply companies supplying end consumers within its control area.