Inverters

SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX

$ 3,150USD · price may vary

Model: SGS-12K18MAX
Specifications: 0

Overview

Power your home, farm, or small business with a high-capacity hybrid inverter built for whole-home backup and smart energy control. The SunGoldPower SGS-12K18MAX integrates solar + battery + grid/generator into one all-in-one platform, with robust 200A pass-through and flexible operating modes for on-grid, off-grid, or hybrid setups.

Key Features & Benefits

12kW rated output @ 240V (10.4kW @ 208V)

200A whole-home backup pass-through for seamless household circuit support

Dual MPPT solar charging (2 MPPTs) with up to 550Vdc max Voc per MPPT

High PV handling: 9,000W + 9,000W (18kW total) PV array power

Parallel expandable: up to 6 units (up to 72kW total system scaling)

Flexible output voltage: 120/240Vac split-phase and 120/208V three-phase

Battery compatibility: Li-ion / Lead-Acid / User Defined, 48Vdc nominal (40–60Vdc range)

AC coupling function to integrate with a grid-tied PV inverter on the AC input

Built-in Rapid Shutdown (RSD) support for NEC rapid shutdown compliance workflows

Peak shaving / time-of-use optimization using battery vs grid based on cost periods

IP65 weather-resistant enclosure for indoor/outdoor installation

Monitoring & control via LCD display and optional Wi-Fi / GPRS modules

Safety & grid compliance certifications: UL1741, IEEE1547.1-2020, CEC listed, Rule 21, HECO, RoHS, FCC 15 Class B (EMC)

Specs in a Glance

Model: SGS-12K18MAX

Inverter Output: 12,000W @ 240V; 10,400W @ 208V

Surge: 1.5× rated power (10 seconds)

Output Voltage: 120/240Vac (Split-phase), 120/208V (Three-phase)

AC Frequency: 50/60Hz

Waveform: Pure Sine Wave

Parallel Capacity: Up to 6 units

Battery Voltage (Nominal): 48Vdc

Battery Voltage Range: 40–60Vdc

Max Charging Current: Grid 200A / Generator 200A / Hybrid 240A

MPPT Trackers: 2

Max PV Array Power: 9,000W + 9,000W

Max PV Input Current: 32A + 32A (Isc 40A + 40A)

Max PV Open Circuit Voltage: 550Vdc + 550Vdc

MPPT Voltage Range: 125–450Vdc

MPPT Tracking Efficiency: 99.9%

Grid/Generator Input Voltage Range: 90–140Vac

Continuous Grid Pass-through Current: 200A

Communication Ports: RS485 / CAN / USB / Dry contact

Optional Comms Modules: Wi-Fi / GPRS

Enclosure Rating: IP65

Dimensions: 33.07 × 17.32 × 10.24 in (840 × 440 × 260 mm)

Weight: 105.82 lb (48 kg)

Noise: <60 dB

Self-consumption: <100W

Cooling: Heat sink + intelligent fan cooling

Operating Temp: -13°F to 140°F (derates >113°F)

Ideal For

Whole-home backup with 200A pass-through

Hybrid solar + storage systems needing high-voltage MPPT (up to 550Vdc)

Large residential / farm / light commercial loads

Systems that may expand later via parallel scaling to 72kW

Installations requiring IP65 outdoor-rated equipment

User Manual / Documents:

SunGold Power 12kW 48V All-in-One Hybrid Inverter User Manual

What these specifications mean

Detailed specifications for SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX have not been published yet. Sungold lists this inverter in the Inverters, and we add fields as the manufacturer releases them — in the meantime, ask your distributor for the datasheet before ordering.

For an inverter, the figures that matter most are surge or peak rating, which covers the brief inrush of motors and compressors, maximum PV input and the number of MPPT trackers, which set how many panel strings you can connect, the MPPT voltage window, which decides how many panels go in a string and peak and weighted (European/CEC) efficiency, typically 96–98.5%. It is the component that decides what a solar system can do: how much power you can draw at once, whether you can export to the grid, whether the system keeps running in a blackout, and how well the panels and battery are managed day to day.

Choosing an inverter: the checks that matter

The checks below apply to any inverter. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.

Size the inverter against the loads you need to run simultaneously, not against the total wattage of every appliance in the building — a 5 kW inverter comfortably runs a fridge, fans, lights and a couple of ACs, but not all of them plus a water pump starting at the same time.
Keep the panel array between roughly 1.0 and 1.3 times the inverter's rating. Slight oversizing (a higher DC-to-AC ratio) captures more energy on cloudy mornings and winter days; going far beyond it wastes generation through clipping.
Check the surge rating if you run motors — deep-well pumps, compressors and older air conditioners can draw two to three times their running current for a few seconds at start-up.
Choose a hybrid inverter if a battery is in your plan now or later; retrofitting storage onto a pure grid-tie inverter usually means buying a second unit or an AC-coupled battery system.

Where buyers lose money

Overlooking the IP rating. An outdoor installation needs at least IP65; indoor-rated units mounted outside fail early.
Buying on peak-watt price alone. A cheap inverter with a narrow MPPT window forces awkward string layouts and can strand a portion of the array.
Ignoring the ambient temperature rating. Inverters derate in heat, so a unit rated 5 kW at 25 °C may deliver noticeably less on a hot roof-adjacent wall at 45 °C.

Price and availability in United States

SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX is listed at $ 3,150 (USD) for United States. Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.

SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in United States: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports Sungold locally before ordering.

SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX — frequently asked questions

How much does SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX cost?

SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX is listed at $ 3,150 (USD) for United States. The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.

Who makes SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX?

SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX is a Sungold product, listed under inverters with model reference SGS-12K18MAX. The Sungold brand page lists the rest of its range so you can compare across the catalogue.

Is SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX right for my system?

That depends on what it has to connect to. For an inverter, check surge or peak rating, which covers the brief inrush of motors and compressors, maximum PV input and the number of MPPT trackers, which set how many panel strings you can connect and the MPPT voltage window, which decides how many panels go in a string against the rest of your equipment before price enters the decision. Size the inverter against the loads you need to run simultaneously, not against the total wattage of every appliance in the building — a 5 kW inverter comfortably runs a fridge, fans, lights and a couple of ACs, but not all of them plus a water pump starting at the same time.

Where can I buy SunGold Power 12kW 48V All-in-One Hybrid Inverter | 200A Whole-Home Backup | 18kW PV Input | Split-Phase + 3-Phase | SGS-12K18MAX in United States?

SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer in United States — buying in-channel is what keeps the manufacturer's warranty valid.

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