SOLAR GENERATOR · SOLAR + BATTERY, NO ENGINE

18 kW off-grid mobile solar generator: 16 panels over a 42.4 kWh lithium bank.

16 × 460 W panels make 31.6 kWh a day into a 52 Vdc bank. Below 1.32 kW the sun covers the whole load and it runs indefinitely — no fuel, no exhaust, nothing to hear.

Continuous
18kW
DC bus
52V nom
Stored
42.4kWh
Solar / day
31.6kWh
Trailer
3axles
123-SG-7D83 — triple axle white trailer stowed in desert

Overview

How this machine carries the load.

123-SG-7D83 is a solar and battery power system on one trailer. It is rated for 18 kW of continuous output; the inverter sets that limit. It delivers 120/240 V or 120/208 V at 50 / 60 Hz, with a 5 ms transfer. It powers single-phase 120 V and 240 V equipment; it does not supply three-phase loads. Storage is 42.4 kWh of lithium iron phosphate (LFP), 21.2 kWh of it usable at the standard 50% reserve: 2.28 hours at 9 kW on the battery alone. The 7.36 kW solar array produces 31.6 kWh/day on an average day, facing south. Solar offsets energy across the day rather than following the load minute by minute; below 1.32 kW it carries the site on its own. It arrives on its own 3-axle trailer, rated for operation from +14 to +131 °F (-10 to +55 °C).

Built for sites without grid power: telecommunications, construction, utilities, and oil and gas. Below 1.32 kW the site runs on sun and battery alone — silent, fuel-free and without limit. There is no engine on this build: nothing to fuel, nothing to service and nothing to hear.

On this machine

  • 7.36 kW deployable solar array on 16 panels
  • 42.4 kWh energy storage across 8 arrays
  • No engine — nothing to fuel, service or hear
  • 3-axle road-towable platform

Performance

Performance across the load range.

Zero to 18 kW, the rated maximum.

How long the battery carries the load on its own. Below 1.32 kW the array carries the whole day and the machine runs indefinitely. Above it, these are the hours the bank lasts with no sun and nothing charging, at the standard 50% setting and at the 30% setting.
06.312.518.8251.32369121518rated continuous 18 kWbelow 1.32 kW it runs indefinitelycontinuous load, kWhours on the battery alone

battery only, 50% settingbattery only, 30% settingthe array carries the whole dayrated continuous output

Performance of 123-SG-7D83 at each continuous load
Loadcontinuous, 24 h Solar generationthe array, per day Battery only Daily drawload × 24 h After solar Days of autonomy
1.32 kWsolar break-even 31.6 kWh 15.59 h / 21.83 h 31.6 kWh covered indefinite
3 kW 31.6 kWh 6.85 h / 9.6 h 72 kWh 40.4 kWh 0.51 days
6 kW 31.6 kWh 3.43 h / 4.8 h 144 kWh 112.4 kWh 0.18 days
9 kW 31.6 kWh 2.28 h / 3.2 h 216 kWh 184.4 kWh 0.11 days
12 kW 31.6 kWh 1.71 h / 2.4 h 288 kWh 256.4 kWh 0.08 days
15 kW 31.6 kWh 1.37 h / 1.92 h 360 kWh 328.4 kWh 0.06 days
18 kW 31.6 kWh 1.14 h / 1.6 h 432 kWh 400.4 kWh 0.05 days

Every load here runs continuously, and the day is 24 hours — daily draw is the load × 24 h, so 2 kW is 48 kWh. A load that runs an 8-hour shift draws a third of the figure shown and lasts three times as long. Battery-only hours are given at both state-of-charge settings. Solar is a daily energy offset, not an instantaneous power match — over a day it balances, within a day it is not a guarantee of cover.

Size it for your site

Your load, on 123-SG-7D83.

Most sites swing between a low and a high. Enter both, and the hours a day spent at the high, and the figures follow your day rather than a flat worst case. The load is yours — nothing is assumed until you enter it, and nothing that names you is kept; the PDF button builds the engineering sheet from the figures you enter.

Read from the performance table above: engine hours and fuel follow the day's energy, so your day is read at its average load; solar is the published daily figure; battery-only hours are the published bank at your high load. A load held for 24 hours is the worst case at that level. With no days entered it runs indefinitely; a week and a year are your day repeated, at the same sun.

Gallery

On site and on the road.

123-SG-7D83 — triple axle white trailer stowed in desert
triple axle white trailer stowed in desert

Applications

Where this configuration is deployed.

TelecommunicationsConstructionUtilitiesOil and gasRemote operations