We have analyzed the spectral properties and the anisotropy of the energy transfer rate in plasma turbulence by using high-resolution three-dimensional simulation of decaying turbulence at kinetic scales. We made use of an hybrid-PIC approach where ions are treated as particles and electrons as a massless fluid. Th simulation was produced at KNL-MARCONI, a Tier-0 system facilities of CINECA, using the INAF 2017 call (grant INA17 C3A22a). The simulations produced are state-of-the-art in terms of resolution and number of particles integrated in the system, and was used to analyse the energy transfer rate and spectral anisotropy at ion kinetic scales. A short summary of the resources allocated and the results obtained is here reported.