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Off-grid solar system for a villa
A complete off-grid solar system for a large villa — no grid connection, sized to run everything the household needs around the clock. Built around the Felicity MJS IVGM12KLP3G1, with 4 × FLB48314TG1 and 20 × GK-1-72HTBD-580M.
That's a 12 kW inverter, 57.6 kWh of battery storage and 20 panels working together.
How we sized it
This system is built to handle 11.7 kW at once. Appliances like compressors and pumps briefly draw far more than their running power the moment they switch on — so we size for that peak moment, not just the average, which is what keeps the inverter from tripping when a few things start up together. And the 12 kW inverter carries comfortable headroom above that peak.
Day to day, that's about 49.5 kWh of use — the number the Felicity MJS bundle above is built to cover.
With no grid to lean on at all, that day (plus a cloudy-day reserve) needs about 49.5 kWh; the 4 × FLB48314TG1 we've picked gives you 57.6 kWh installed.
The array works out to 11.6 kWp — 20 panels of the GK-1-72HTBD-580M across roughly 52 m² of roof — assuming the strong, fairly steady sunshine typical of our main markets (about 5.7 peak sun hours a day). Your own roof may do a little better or worse depending on shading and the season.
Frequently asked questions
What can this system power?
4+ bedrooms, four ACs plus a freezer and a pump, a large household running everything. It's sized to handle up to 11.7 kW at once — enough for whichever appliance switches on hardest.
How long does the backup last?
This system is sized to store about 49.5 kWh — a full day of use plus a cloudy-day reserve — because there's no grid to fall back on.
How many solar panels does it need?
20 panels, about 11.6 kWp, filling roughly 52 m² of roof.
Can I expand this system later?
Yes — inverters, batteries and panel arrays in this range are modular, so you can add more battery modules or extra panels later, starting from this 11.7 kW / 11.6 kWp baseline.