SunGold Power 18kW 48VDC Off-Grid Solar Kit | 9000W Solar

The SunGold Power SGR-18K20E Pairs an 18kW Inverter With 9,000W of Solar and 30.72kWh of LiFePO4 Storage

The SunGold Power 18kW 48VDC Off-Grid Solar Kit (SGR-18K20E) is a complete off-grid solar kit built around an 18,000W low-frequency split-phase inverter charger (LFPV18K48V240VSP). It includes 20 x 450W bifacial N-type monocrystalline solar panels for 9,000W of solar, 6 x CoreX 5 Pro 51.2V 100Ah server rack batteries for 30.72kWh of storage, two 100A MPPT solar charge controllers (SGC4825100A), and the breakers, cables, and mounting hardware SunGold lists for the system.

SunGold builds this kit for homes, cabins, and commercial sites that need heavy-duty power. The 18kW split-phase inverter handles air conditioners, well pumps, and light commercial loads, backed by six CoreX 5 Pro batteries for 30.72kWh of storage.

SunGold Power SGR-18K20E 18kW Solar Kit Features

18kW Split-Phase Inverter

The LFPV18K48V240VSP is an 18,000W low-frequency inverter charger with 120/240VAC split-phase pure sine wave output and a 54,000W surge rating for 20 seconds for the heaviest motor starting loads. Its built-in AC charger delivers about 95A from a 240VAC grid or generator source. Solar charging is handled by the separate MPPT controllers included in the kit.

30.72kWh of LiFePO4 Storage

Each CoreX 5 Pro is a 51.2V, 100Ah (5.12kWh) LiFePO4 server rack battery with built-in Wi-Fi and Bluetooth monitoring, CAN and RS485 inverter communication, and up to 100A of discharge current. The CoreX 5 Pro is rated IP20 for indoor use. Six batteries combine for 30.72kWh of storage. SunGold includes a mounting bracket for each battery.

9,000W Solar Array

The 450W bifacial N-type panels (SGN-450-BDG5) use 96 N-type monocrystalline cells and can collect reflected light from the rear side when mounted with open space behind them. Each panel is UL61730 and CEC listed and carries a 12-year material and workmanship warranty with a 30-year linear power warranty. At four peak sun hours, the 20-panel array produces about 36kWh per day. Actual output depends on location, season, tilt, and shading.

Two 100A MPPT Charge Controllers

The SGC4825100A MPPT controller charges 12V to 48V battery banks at up to 100A, accepts up to 250V open circuit from the array, and handles up to 5,280W of solar on a 48V system. Built-in Bluetooth lets you monitor charging from a phone app. The kit splits the array between two controllers for up to 200A of combined solar charging.

Breakers, Cables, and Mounting Hardware

SunGold includes DC and PV breakers, battery and inverter cables, 50-foot solar extension cables, Z-brackets for mounting the panels, and a busbar, all sized for this kit. SunGold also publishes a wiring diagram for the kit on its website. Having matched protection and cabling in the box saves sourcing time and helps keep the installation consistent.

Room to Expand

Up to 15 CoreX 5 Pro packs can be connected in parallel. The inverter is a standalone unit, so plan its size around your largest expected loads. Add panels within the controller solar input limits as your energy use grows.

Real-World Applications

Large off-grid homes. Run air conditioners, well pumps, and full household loads.

Farms and ranches. Power pumps, barns, and equipment.

Light commercial sites. Support offices, shops, and remote facilities.

Extended backup. Ride through long outages with a large battery bank.

How It Compares to Common Alternatives

Versus buying components separately. A kit pairs an inverter, batteries, and panels that SunGold has matched for voltage and current, with breakers and cables sized for the system and a published wiring diagram.

Versus a fuel generator alone. Solar and batteries run quietly with no fuel deliveries. Many off-grid owners still keep a generator for long cloudy stretches, and the inverter can charge the batteries from one.

Versus the SGR-15K20E. The SGR-15K20E uses the same panels and batteries with a 15kW inverter.

Is This Solar Kit the Right Fit

• Daily energy. The array produces about 36kWh per day at four peak sun hours. Compare that with your average daily use.
• Loads. The inverter provides 18,000W of continuous 120/240VAC split phase output. This kit supplies 240V for well pumps, dryers, and other 240V appliances.
• Battery location. The batteries are rated IP20 and belong in a dry, indoor space.
• Mounting. Z-brackets are included for flat surface mounting. Ground mounts or racking for other mounting styles are sold separately.
• Installation. Have a qualified electrician install the system and follow local codes and permit requirements.

This may be a good fit if

• You want a matched solar, battery, and inverter package
• You need 120V and 240V power
• Your daily energy use is around 36kWh or less
• You plan to expand the system later

Common Questions

How Much Energy Will This Kit Produce?

At four peak sun hours, the 9,000W array produces about 36kWh per day. Production varies with your location, season, and panel orientation.

Does It Need a Separate Charge Controller?

The kit already includes two 100A MPPT controllers, which charge the batteries from the panels.

Can I Add More Batteries Later?

Up to 15 CoreX 5 Pro packs can be connected in parallel.

Can It Charge From a Generator?

Yes. The inverter accepts AC input from the grid or a generator to charge the batteries and pass power to loads. This inverter needs 240VAC input.

Is Installation Included?

No. The kit ships as components. We recommend a qualified electrician for installation and permitting.

What's Included

• 1 x 18000 Watt 48V DC 120V/240V AC Output Inverter
• 20 x 450W Bifacial N-Type Monocrystalline Solar Panels
• 2 x 100A MPPT Solar Charge Controllers
• 6 x 100Ah CoreX 5 Pro Server Rack 51.2V Lithium Batteries
• 6 x Battery Brackets
• 2 Sets x 50 Feet Solar Extension Cables (Inverter PV Input)
• 2 Sets x 4 AWG Cable Between Battery and MPPT Controller
• 20 Sets of Mounting Z-Brackets
• 1 x 400A DC Breaker
• 2 x 50A PV Breakers
• 2 Sets x 4/0 AWG Cables (Breaker to Battery or Inverter Connection)
• 1 Set x 400A Busbar

Power Your Property With Solar

The SunGold Power 18kW 48VDC Off-Grid Solar Kit brings together the inverter, batteries, panels, and protection an off-grid system needs. At Outbound Power, we help customers size solar kits, plan battery banks, and choose the right accessories. If you have questions, our team is happy to help.

SunGold Power 18kW 48VDC Off-Grid Solar Kit Manuals