Solis Brand 10 kWatt, Three Phase On-Grid Solar Power Inverter with 8 years warranty

The Solis S5-GR3P10K is a 10kW three-phase on-grid solar inverter with two MPPT trackers, 98.5% maximum efficiency, and an 8-year warranty. It accepts up to 15kW of PV input at a maximum 1100V and weighs around 17.6kg.

98.5% efficiency is the number that sets this apart. Most inverters in this class run 97.4-97.6%; 98.5% is at the top end of what string inverters achieve, and it is a real, certified figure rather than a marketing claim. Across fifteen years, every percentage point lost in DC-to-AC conversion is generation you paid for and never received. When you compare inverters at the same rating, efficiency and warranty are the two specifications that genuinely separate them and this unit leads on both.

How an on-grid system works. No batteries, nothing to replace in five years, nothing to maintain. The inverter converts the 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 monsoon consumption. For a property with strong daytime load, a grid-tied system at 10kW turns a large roof into the shortest-payback asset available.

15kW of PV input on a 10kW inverter. That 1.5:1 DC-to-AC ratio lets you build a larger array than the nameplate suggests. Panels rarely hit rated output in real conditions, so an oversized array fills more of the inverter's capacity through more of the day more morning and evening generation, better performance under cloud. The MPPT range runs a wide 160-1000V with an 1100V maximum, which gives your installer real flexibility in string design.

Two MPPT trackers. Each handles 16A operating current (20A short-circuit), managing its own string independently so a roof facing two directions, or with a section shaded by a tank through the afternoon, does not drag the whole array 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 installation an inverter failure in year six means downtime plus a replacement bill.

Sizing it correctly. A 10kW inverter suits roughly a 10–15kW panel array given this unit's generous input headroom. Send our team your panel count, wattage and roof layout and we will confirm 10kW is right, or point you to the 8kW or 12kW.

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.