The Solis S5-GC30K is a 30kW three-phase on-grid solar inverter with three MPPT trackers, 98.6% maximum efficiency, and an 8-year warranty. It accepts a recommended maximum of 45kW of PV input at up to 1100V, and weighs 38.2kg.
45kW of PV input on a 30kW inverter. That 1.5:1 DC-to-AC ratio means you can build an array half again the size of the nameplate a full 15kW more than the rating. Panels rarely hit their rated output in real conditions, so an oversized array fills more of the inverter's capacity through more of the day: more generation in the morning and evening, better performance under cloud, more total units across the year. On a commercial roof with the space for 45kW of panels, one 30kW inverter handles the lot, which saves both equipment and installation cost against running two smaller units.
Three MPPT trackers. Each handles 32A operating current (40A short-circuit) across a 200-1000V range. On a commercial roof rarely one clean rectangle, usually spanning multiple orientations with sections shaded by plant structures, tanks, or adjacent buildings through the day three independent trackers let each section generate at its own maximum instead of the whole array being averaged down to its weakest string. That is the difference between projected yield and delivered yield, every day, for twenty-five years.
98.6% efficiency. At the top of what string inverters achieve. On a 30kW commercial installation running for twenty-five years, the gap between this and a 97.5% competitor is a measurable quantity of generation across the asset's life which is why efficiency and warranty, not headline features, are what a technical buyer actually compares.
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. For a factory, warehouse, school, hospital, or commercial complex with strong daytime load, a grid-tied system at 30kW turns a large roof into the shortest-payback asset on the balance sheet.
The 8-year warranty on the single point of failure. In a commercial installation the inverter fails before the panels, and its downtime stops the array, not one string. Eight years of manufacturer cover is what protects the project economics through payback on a commercial roof, warranty length and service response are the risk model, not a feature.
Installation note. At 38.2kg in a 647 × 629 × 252mm cabinet, mounting needs to be planned and properly rated the same chassis as the 25kW unit.
Sizing it correctly. A 30kW inverter suits an array up to 45kW given this headroom. Send our team your panel count, wattage and roof layout and we will confirm 30kW is right, or point you to the 25kW or 33kW.
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. Compare it against Growatt and Deye at the same rating on our platform we will tell you which suits your roof, not which we are holding. 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 commercial solar inverter price and talk to our team for a specification review and installation timeline in your city.
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