The 4-cloud portal is an additional service permitting to always keep a safe on-line copy of all information detected on the registered devices. With an intuitive user interface, it offers the possibility to analyse the data monitored in the form of graphics, to download in Excel format and to print all information. The portal also creates alarm notifications: the user can configure up to five mail addresses to receive the error signals or malfunctions of the solar PV plant detected by the control system. In that way, MAIL ALARM (no SMS) are sent to inform the user on the block of one or more PV inverters, or on the malfunctioning of the solar PV system or data transmission.