The SMA Cellular LTE Modem Kit allows for direct data transmission between the Sunny Boy inverter to the cloud based Sunny Portal via a cellular network as an alternative to data transmission via Ethernet or WLAN. The SMA Cellular LTE Modem Kit transmits solar production data up to four times per day to Sunny Portal. The SMA Cellular LTE Modem Kit includes a 5 year prepaid data plan, which can be extended upon request.