The Solis S5-GC33K is a 33kW three-phase on-grid solar inverter with three MPPT trackers, 98.7% maximum efficiency, and an 8-year warranty. It accepts a recommended maximum of 49.5kW of PV input at up to 1100V, and weighs 38.2kg.
The top of the S5-GC chassis, and why that matters. This 33kW unit shares its cabinet, MPPT count, current ratings, and 38.2kg weight with the 25kW and 30kW models it is the highest capacity Solis fits into this chassis. Practically, that means you get 33kW of output and nearly 50kW of array capability from the same physical footprint, mounting, and installation effort as the 25kW. If your project sits anywhere in the 25-33kW band, taking the 33kW costs nothing extra in space or installation labour and leaves headroom to expand the array later without replacing the inverter.
49.5kW of PV input on a 33kW inverter. That 1.5:1 DC-to-AC 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 fills more of the inverter's capacity through more of the day more morning and evening generation, better performance under cloud, more total units across the year. On a commercial roof with the space for nearly 50kW of panels, one inverter handles the lot.
Three MPPT trackers. Each handles 32A operating current (40A short-circuit) across a 200-1000V range. Commercial roofs are rarely one clean rectangle they span 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.
98.7% efficiency the highest in the Solis range. On a 33kW commercial installation running twenty-five years, the gap between this and a 97.5% competitor is a measurable quantity of generation across the asset's life. Efficiency and warranty, not headline features, are what a technical buyer compares and this unit matches Solis's utility-scale units on both.
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. For a factory, warehouse, school, hospital, or commercial complex with strong daytime load, a grid-tied system at 33kW 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.
Sizing it correctly. A 33kW inverter suits an array up to 49.5kW given this headroom. Send our team your panel count, wattage and roof layout and we will confirm 33kW is right, or point you to the 30kW below or the larger utility-scale units above.
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.
SolarClue is a leader in solar energy products and reliability across India. Power your energy future with industry-leading solar products and solutions at cost-effective solutions. If you’re staying in Nabadwip, West Bengal, or any other place in India, Solarclue.com can provide you with the best solar products in your budget only.
