The Solis S5-GR3P8K is an 8kW three-phase on-grid solar inverter with two MPPT trackers, 98.5% maximum efficiency, and an 8-year warranty. It accepts up to 12kW of PV input at a maximum 1100V.
Three-phase at 8kW for large homes and small commercial premises. This rating suits a large villa with heavy daytime load, an office, a showroom, or a small business premises on three-phase supply. A three-phase inverter distributes generation evenly across all three lines as your DISCOM requires; if your building is single-phase, tell our team and we will point you to the right alternative, because the phase must match your connection.
How an on-grid system works. No batteries, nothing to replace in five years, nothing to maintain. The inverter converts DC from your panels to AC, powers your load through the day, and exports the surplus through net metering so your meter runs backward the credit offsets your night and weekend consumption. It is the simplest solar configuration and the shortest payback.
12kW of PV input on an 8kW inverter. That 1.5:1 ratio lets you build an array half again the size of the nameplate. Panels rarely hit rated output in real conditions, so an oversized array generates through more of the day more in early morning and late afternoon, better under monsoon cloud, more total units across the year. On a roof with the space for 12kW of panels, one 8kW inverter handles the lot.
98.5% efficiency and a wide input range. At 98.5% this sits near the ceiling of what string inverters achieve. The 160-1000V MPPT range with an 1100V maximum gives your installer real latitude in string design longer strings, fewer parallel runs, more flexibility on a constrained roof.
Two MPPT trackers. Each handles 16A operating current (20A short-circuit), managing its own string independently so a roof facing two directions, or with sections shaded by a tank or parapet through the day, does not get dragged down to the weakest string.
The 8-year warranty. Most inverters in this class ship with 5 years standard. Eight years is three additional years on the component most likely to fail before your panels do and on a commercial premises, an inverter failure in year six means downtime plus a replacement bill.
Sizing it correctly. An 8kW inverter suits an array up to 12kW, roughly 16 to 24 panels at 500W. Tell our team your monthly bill, roof layout and phase connection, and we will confirm 8kW is right, or point you to the 6kW or 10kW.
SolarClue is India's managed solar marketplace. Our team confirms this inverter matches your panel array, your three-phase supply and your DISCOM's net metering requirements before you order, and handles your PM Surya Ghar subsidy application if your system qualifies. Compare it against Growatt and Deye at the same rating on our platform. You book with a token payment rather than the full amount upfront. Supply and installation are coordinated through verified partners, and we handle Solis warranty support afterwards. Check the current on grid solar system price and talk to our team for a specification review and installation timeline in your city.
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