The Solis S6-GR1P(2.5-6)K series is the sixth-generation single-phase string inverter for residential rooftops, with seven models from 2.5 to 6 kW. Its dual-MPPT design (2 MPPTs / 2 strings) handles two roof orientations, with a wide 90–520 V MPPT range, 600 V maximum DC input and 14 A input current per MPPT.

Reaching up to 97.7% maximum efficiency in an IP66, naturally cooled enclosure quieter than 20 dB(A), it integrates AFCI arc-fault protection, export power control, 24-hour load consumption monitoring and adaptive weak-grid operation. RS485 comes standard, with optional Wi-Fi or GPRS data sticks connecting the system to SolisCloud.