AnS certificates are issued in accordance with certification measurement methodology which describes the method and conditions of measurement, the technical values specified in an AnS certificate, AnS quality parameters, conditions of compliance with quality parameters and the fulfilment of such parameters, the method used for the evaluation of data obtained from certification measurements, etc. Measurement methodology for individual AnS categories is defined in the Grid Code, Part II.

The methodology also encompasses the content of AnS certificates which contain a set of the measured and evaluated parameters of a specific ancillary service. A contract for a specific ancillary service can subsequently be signed between an Applicant holding a relevant certificate and ČEPS. The Applicant becomes a provider of the specific AnS once the contract enters into force.

The certification process consists of a set of procedures the conclusion of which is the issuance of a certificate for a specified ancillary service which is a necessary precondition for entering into a contract for AnS provision. The relationships between the individual entities involved in the certification process are illustrated in the diagram below:

The individual entities involved in the certification process are as follows:

  • AnS Applicant – a potential AnS provider (a power station, generating unit, CHP plant etc.).
  • Certification authority – an organisation holding authorisation from ČEPS to certify that a given Applicant is able to provide the relevant AnS (see Part II of the Grid Code, chapter “Conditions for the granting of authorisation”).
  • ČEPS – the Transmission System Operator.