Cosmic ray energy spectra derived from KASCADE-Grande data using post-LHC hadronic interaction models

KASCADE-Grande was dedicated to measuring the energy spectrum and mass composition of cosmic rays in the energy range of 10 PeV to 1 EeV. We observed a knee-like structure in the heavy mass component at around 100 PeV and an ankle-like structure in the light component. In this contribution, we present updated energy spectra based on shower size measurements, using the post-LHC hadronic models QGSJET-II-04, EPOS-LHC, and SIBYLL 2.3d, with accounting for shower-to-shower fluctuations. We will compare and discuss the results obtained using the different interaction models.