The Solis S5-GR3P5K is a 5kW three-phase on-grid solar inverter with two MPPT trackers, 98.3% maximum efficiency, and an 8-year warranty. It accepts up to 7.5kW of PV input at a maximum 1100V and weighs 16.5kg.
The phase is the first thing to get right, and it is what separates this from the single-phase 5kW. If your building has a three-phase connection most larger homes, villas, and offices do you need a three-phase inverter like this one, not a single-phase unit. A three-phase inverter distributes generation evenly across all three lines, which is what your DISCOM requires on a three-phase connection and what keeps your supply balanced. If you are on single-phase, the Solis S6-GR1P5K is the unit you want instead. Getting the phase wrong is the most common and most avoidable mistake at this rating, so tell our team which supply you have and we will confirm.
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 monsoon consumption. At 5kW it is one of the most-requested ratings in India, and the PM Surya Ghar subsidy is what makes the numbers work for most buyers. Tell our team your consumption and we will show you the net cost after subsidy.
98.3% efficiency, and the wider input range. This three-phase unit runs at 98.3% against the single-phase model's 97.7%, and it accepts up to 1100V PV input across a 160-1000V MPPT range considerably wider than the single-phase unit's 550V ceiling. That gives your installer far more latitude in string design: longer strings, fewer parallel runs, and more flexibility on a roof where panel placement is constrained. If your building is on three-phase, you get the better inverter as well as the correct one.
7.5kW of PV input on a 5kW inverter. That 1.5:1 ratio lets you build a larger array than the nameplate suggests. 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 cloud.
Two MPPT trackers. Each handles 16A operating current (20A short-circuit), managing its own string independently so a roof facing two directions, or with afternoon shading from a tank or parapet, still generates properly rather than being dragged 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.
Sizing it correctly. A 5kW inverter suits an array up to 7.5kW, roughly 10 to 15 panels at 500W. Tell our team your monthly bill, roof layout and phase connection, and we will confirm 5kW three-phase is right for your setup.
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 end to end. If you are on single-phase supply, we will point you to the single-phase 5kW instead getting that right before you order matters more than any other decision at this rating. 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 5kw solar inverter price and talk to our team for a specification review and installation timeline in your city.
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