The Li-ion ESS is sized to provide an energy storage capacity of 6.6 MWh and deliver 5.6 MW of power for frequency regulation throughout its 15-year lifetime. It comes in three integrated containers of 2.2 MWh each, designed and manufactured at Saft's site in Bordeaux, France.

Saft launched the Intensium Max 20 HE to address the majority of grid, renewables, commercial and industrial applications that require large-scale ESS solutions with discharge times of around two hours.