123eSolarIntegrated mobile power
SOLAR TRI-BRID™ GENERATOR · SOLAR, BATTERY AND DIESEL BACKUP

9 kW Tri-Brid™ with sixteen panels and 12 days between refuels at 6 kW.

16 × 460 W panels make 31.6 kWh a day into a 51.2 V bank. Below 1.32 kW the sun covers the whole load and it runs indefinitely with the engine off.

Continuous
9kW
DC bus
51.2V nom
Stored
22.8kWh
Solar / day
31.6kWh
Size it for your site Engineering sheet · PDF Part number123-STG-71S62
123-STG-71S62 — Sixteen panels raised overhead, jacks down and running on a desert site. 123-STG-71S62 — Clean enclosure lines, with the stowed panel frames above the equipment bay. 123-STG-71S62 — Sixteen panels fully open, producing 31.6 kWh on an average day. 123-STG-71S62 — The EPA Tier 4 Final diesel generator, reached through its service door. 123-STG-71S62 — A 123eSolar Tri-Brid™ with its array raised beside the Verizon Response cell on wheels, MetLife Stadium parking lot

123-STG-71S62 — Sixteen panels raised overhead, jacks down and running on a desert site.

Overview

How this machine carries the load.

A new cell site is often ready to go on air before utility power reaches it, and until it does, a temporary diesel generator runs it around the clock. 123-STG-71S62 is the long-endurance Tri-Brid™ for that job: a sixteen-panel solar array, 22.8 kWh of lithium storage and a 9 kW diesel generator on one trailer, built for remote sites where every refuelling trip is a truck, a driver and a day.

The 7.36 kW array produces 31.6 kWh on an average day — enough that below 1.32 kW the site runs on sun and battery alone with the engine off. Continuous output is rated at 9 kW, set by the generator; the battery holds up to 12 kW for short peaks, with surges to 24 kW for motor starts.

Above the solar break-even the generator runs only to make up what the sun and the bank cannot. At a steady 6 kW the engine runs 12.81 hours a day where the 40 kW generator telecom sites use for temporary power would run all 24, and a full 120-gallon tank lasts 12.03 days between refuels against 7.92 for the 40 kW alone — 9.48 gallons a day instead of 16.8. At 4 kW the tank lasts 20.63 days. Both engines are read by the same fuel rule: their own published figures, held at the lowest one below it. That is the figure that decides how often a remote site has to be visited, and it is what makes this the cost-effective way to keep the site on air. The engine is certified to EPA Tier 4 Final.

Output is 120/240 V or 120/208 V at 50/60 Hz with a 5 ms transfer, and the machine is rated for operation from -4 to 140 °F (-20 to 60 °C). Size a continuous load at or under the 9 kW rating; the table below shows exactly what happens above it.

Features and benefits

  • Sixteen 460 W panels, 7.36 kW — Light loads burn no fuel at all.
  • 9 kWe diesel with a 120-gallon tank — 12 days between refuels at 6 kW, the longest interval in the line.
  • 22.8 kWh lithium iron phosphate bank — Motor starts and short peaks never lean on the engine.
  • EPA Tier 4 Final engine — Ready for sites that specify Tier 4 Final equipment.

Performance

Performance across the load range.

Zero to 12 kW. Rated for 9 kW continuous — loads above that are shown in red.

What the engine does at each load. Below 1.32 kW the array carries the whole day and the engine never starts. Above it, the engine runs only to put back what the sun did not: at 8 kW, 17.97 hours a day on 13.3 US gallons.
00651210181524201.3224681012rated continuous 9 kWbelow 1.32 kW the engine never startscontinuous load, kWengine hours per daydiesel, US gallons per day

engine hours per daydiesel, US gallons per daythe array carries the whole dayrated continuous output

Performance of 123-STG-71S62 at each continuous load
Loadcontinuous, 24 h Solar generationthe array, per day Battery only Daily drawload × 24 h After solar Days of autonomy Generator Engine runsa day × each Charge setting Days on a tank
1.32 kWsolar break-even 31.6 kWh 8.34 h / 11.68 h 31.6 kWh covered indefinite 0 h/day none 141 A —
2 kW 31.6 kWh 5.5 h / 7.7 h 48 kWh 16.4 kWh 0.67 days 1.93 h/day 1.1 × 1.8 h 137 A 79.7 days
4 kW 31.6 kWh 2.75 h / 3.85 h 96 kWh 64.4 kWh 0.17 days 7.47 h/day 3 × 2.5 h 98 A 20.6 days
6 kW 31.6 kWh 1.83 h / 2.57 h 144 kWh 112.4 kWh 0.1 days 12.81 h/day 3.1 × 4.1 h 59 A 12 days
8 kW 31.6 kWh 1.38 h / 1.93 h 192 kWh 160.4 kWh 0.07 days 17.97 h/day 1.5 × 12.4 h 20 A 8.6 days
10 kW 31.6 kWh 1.1 h / 1.54 h 240 kWh 208.4 kWh 0.46 days 24 h/day — 0 A 6.4 days
12 kW 31.6 kWh 0.92 h / 1.28 h 288 kWh 256.4 kWh 0.15 days 24 h/day — 0 A 6.4 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.

The engine starts at 30% state of charge (a 70% depth of discharge) and stops at 80%, putting 11.4 kWh back into the bank on each run while it carries the load. The engine runs a day follow from that at each load.

Case study

Against the 40 kW generator running alone.

At 6 kW around the clock, the 40 kW generator telecom sites use for temporary power would carry the site alone at 15% of its rating, 24 hours a day. 123-STG-71S62 runs its engine 12.8 hours a day — 47% fewer engine hours — and burns 44% less diesel: 9.5 US gallons a day against 16.8 US gallons, and 12 days between refuels against 7.9 days.

PDF The full engineering sheet with this case study, to print.

The standalone 40 kW diesel generator on its own tandem-axle trailer
The 40 kW generator alone Engine 24 h a day at 15% of its rating · 16.8 gal a day
123-STG-71S62 — Sixteen panels raised overhead, jacks down and running on a desert site.
123-STG-71S62 Engine 12.8 h a day, the sun and the battery the rest · 9.5 gal a day
Engine hours, diesel and days on a tank, 123-STG-71S62 against the 40 kW generator alone
Loadcontinuous, 24 h 40 kW alonediesel a day, engine 24 h Days on a tank40 kW alone This systemengine hours a day Diesel a daythis system Days on a tankthis system Engine hours saved Diesel saved
2 kW5% of the 40 kW 16.8 gal 7.9 days 1.93 h 1.4 gal 79.7 days 92% 91%
4 kW10% of the 40 kW 16.8 gal 7.9 days 7.47 h 5.5 gal 20.6 days 69% 67%
6 kW15% of the 40 kW 16.8 gal 7.9 days 12.81 h 9.5 gal 12 days 47% 44%
8 kW20% of the 40 kW 16.8 gal 7.9 days 17.97 h 13.3 gal 8.6 days 25% 21%

The 40 kW generator carries the load alone, 24 h a day with no sun and no battery, on its own 140 gallon tank (133 usable). Both engines are read by the same rule: their own published fuel figures, a straight line between them, and below the lowest published point that point’s burn — for the 40 kW, 25% of its rating. No lighter-load figure is invented for either engine. This system’s figures are the performance table above.

Size it for your site

Your load, on 123-STG-71S62.

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; add your diesel price for the fuel bill. 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-STG-71S62 — Clean enclosure lines, with the stowed panel frames above the equipment bay.
Clean enclosure lines, with the stowed panel frames above the equipment bay.
123-STG-71S62 — Sixteen panels fully open, producing 31.6 kWh on an average day.
Sixteen panels fully open, producing 31.6 kWh on an average day.
123-STG-71S62 — The EPA Tier 4 Final diesel generator, reached through its service door.
The EPA Tier 4 Final diesel generator, reached through its service door.
123-STG-71S62 — A 123eSolar Tri-Brid™ with its array raised beside the Verizon Response cell on wheels, MetLife Stadium parking lot
A 123eSolar Tri-Brid™ with its array raised beside the Verizon Response cell on wheels, MetLife Stadium parking lot

Applications

Where this configuration is deployed.

TelecommunicationsConstructionUtilitiesOil and gasRemote operations

Related deployments

This configuration, proven in the field.

123-STG-71S62 — A 123eSolar Tri-Brid™ with its array raised beside the Verizon Response cell on wheels, MetLife Stadium parking lot Case study · TelecomVerizon’s cell on wheels at MetLife Stadium, powered off gridFor a New York Giants Monday Night Football game, a 123eSolar Tri-Brid™ powered Verizon’s Cell on Wheels in the stadium parking lot — solar, battery storage and standby diesel, with no utility connection.Read the case study