The wind industry is one of the most cost-competitive renewable energies globally. In an increasingly interconnected world, the sector must continue to innovate, for example through digital transformation. Smart technologies collaborate in solving the problems that, due to their characteristics and locations, wind farms face with respect to grounding systems. For this reason, Aplicaciones Tecnológicas S.A. offers professional services for geoelectric studies and grounding 4.0 projects. Furthermore, Smart Earthing Monitoring System allows centralised and unattended monitoring of the wind turbine earthing systems and the wind farm substation.