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6 kW off-grid solar system for a shop

A complete off-grid solar system for a small shop — no grid connection needed, sized to run the whole day's trading on its own. Built around the Deye 6 kW Single-Phase Off-Grid Solar Inverter SUN-6K-OG01LP1-EU-AM2, with 2 × Deye 16 kWh 51.2 V Lithium Solar Battery RW-F16 — order the rest online from the Deye catalogue.

That's a 6 kW inverter, 28.8 kWh of battery storage and 11 panels working together.

What is inside

Inverter + BatteryAED 18,015

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Solar panels5.9 kWp11 panelsInverter6 kWruns the placeBattery28.8 kWha full day + reserveShop25.2 kWh/daywhat you use a day
How the energy moves through your system

How we sized it

This system is built to handle 5.6 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 6 kW inverter carries comfortable headroom above that peak.

Day to day, that's about 25.2 kWh of use — the number the Deye bundle above is built to cover.

With no grid to lean on at all, that day (plus a cloudy-day reserve) needs about 25.2 kWh; the 2 × Deye 16 kWh 51.2 V Lithium Solar Battery RW-F16 we've picked gives you 28.8 kWh installed.

The array works out to 5.9 kWp — 11 panels across roughly 29 m² of roof, ordered from the Deye catalogue — 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?

A small retail shop, two ACs and a till running all day. It's sized to handle up to 5.6 kW at once — enough for whichever appliance switches on hardest.

How long does the backup last?

This system is sized to store about 25.2 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?

11 panels, about 5.9 kWp, filling roughly 29 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 5.6 kW / 5.9 kWp baseline.

Other system sizes

Size a system for your own appliances in the calculator