Independent measuring laboratories can emphasise the quality of their work by the use of a conformity seal. The seal is applied at the bottom of the test report (or excerpt from the test report).

An example design of a conformity seal for the power curve testing area is shown below:

Requirements for testing laboratories that wish to show the conformity seal

Anforderungen TR 1 und TR 2

Anforderungen TR 3

Anforderungen TR 9 (in Kürze)


Independent testing laboratories that fulfil the conditions for FGW conformity are listed in the table below. Here, the maximum period of validity of FGW conformity is assigned to each testing laboratory for the corresponding testing area:

  • Maximal validity of the FGW conformity

  • Messinstitut Inspektionsstelle
    TR 1 TR 2 TR 3 TR 7
    Deutsche WindGuard GmbH 2023 2023 2023
    Deutsche Windtechnik Offshore und Consulting GmbH 2022, Dakks
    Enertrag WindStrom GmbH gültig ab 05.10.2020, Dakks
    EWS Consulting GmbH 2023
    GL Garrad Hassan Deutschland GmbH 2023 2023 2023
    Ingenieurbüro Dr. Frey 2023
    M.O.E. GmbH 2023
    Müller-BBM Industry Solutions GmbH 2023
    UL International GmbH (DEWI) 2023 2023
    Sweco Denmark A/S 2023
    WIND-consult GmbH 2023 2023 2023
    windtest grevenbroich GmbH 2023 2023 2023
    Wölfel Engineering GmbH + Co. KG 2023