Sungold Power 12KW 48V All-in-one Hybrid Solar Inverter | Whole Home Backup (200A)| SGS-12K18MAX
In Stock & Ready to Ship
All orders shipped within 2-4 business days. Order transit additional 4-13 days.
In Stock & Ready to Ship
All orders shipped within 2-4 business days. Order transit additional 4-13 days.

When a power outage puts your home, appliances, or business at risk, a dependable backup power system can make a significant difference. The SunGoldPower SGS-12K18MAX 12kW 48V All-in-One Hybrid Solar Inverter is designed to bring solar power, battery storage, and utility electricity together in one integrated energy management system. With 12kW of rated inverter output, support for up to 18kW of solar PV input, and a 200A whole-home bypass capability, it is built for homeowners who want more control over their electricity and a practical path toward energy independence.
Unlike a small portable power station, this hybrid inverter is designed to serve as the central component of a larger residential solar and battery system. It supports 120/240V split-phase power for compatible American electrical systems and can operate in grid-connected, off-grid, or hybrid configurations when properly designed and installed. Pair it with compatible 48V batteries and a correctly sized solar array to create a backup power solution tailored to your household’s electricity needs.
Whether you want to keep essential circuits operating during outages, make greater use of solar energy, or build a system that can reduce your reliance on the utility grid, the SGS-12K18MAX offers substantial power output and room to scale. It is a strong option for homeowners, rural properties, farms, workshops, and small businesses that need more than a basic solar inverter.

Keep More of Your Home Running During Power Outages
Protect your household from unexpected power interruptions with the SunGoldPower SGS-12K18MAX, a 12kW hybrid solar inverter designed for whole-home backup system configurations. Its 120/240V split-phase output can support compatible household circuits and demanding appliances, including refrigerators, lighting, well pumps, electronics, and selected HVAC equipment. With integrated 200A bypass capability, it provides a foundation for a more comprehensive home backup solution, helping you prepare for outages without relying solely on small portable power stations.
Reduce Grid Dependence with Solar Power and Battery Storage
Make more of your own electricity and keep energy available after sunset or during a power outage with support for up to 18kW of solar PV input and compatible 48V battery storage. The SGS-12K18MAX lets you design a system that generates solar electricity, powers household loads, and stores energy for later use. Pair it with the right solar panels and battery capacity to better match your home's energy needs, reduce reliance on utility power, and work toward greater long-term energy independence.
Get Flexible Power Today with Room to Expand Tomorrow
Choose a solar power solution that adapts to your goals, whether you're preparing for outages, reducing grid dependence, or planning an off-grid property. The SGS-12K18MAX supports on-grid, off-grid, and hybrid system designs, giving you flexibility when planning how solar, batteries, and utility power work together. For larger homes and growing energy demands, the manufacturer specifies support for up to six units in parallel, potentially providing 72kW of combined inverter capacity when properly configured. This flexibility helps you plan for future power needs instead of limiting your options to a system designed only for today.
Build a Backup System That Fits Your Home with My Generator Plus
Get more from your investment by choosing an inverter that can serve as the foundation of a customized solar and battery backup system. The SGS-12K18MAX features an IP65-rated enclosure for protection against dust and water jets under specified test conditions, offering added flexibility when selecting an appropriate installation location. For dependable performance, your inverter, solar array, batteries, and electrical service must be properly matched to your requirements. Shop My Generator Plus for excellent customer service, free shipping, and help finding a solar power solution tailored to your needs. Take the next step toward reliable backup power, greater energy resilience, and peace of mind when the grid goes down.

Keep Your Home Powered When the Grid Goes Down. Protect your household against unexpected power outages with the SunGoldPower SGS-12K18MAX 12kW Hybrid Solar Inverter. With 12kW of output and 200A bypass capability, it provides a powerful foundation for a properly designed whole-home backup system. Pair it with compatible battery storage and solar panels to build a solution around the appliances and essential circuits that matter most, giving your family greater energy security when utility power is interrupted.
Power Your Off-Grid Property with a System Built Around Your Needs. Whether you’re equipping a remote cabin, powering a rural home, or building an off-grid solar system for a farm or workshop, the SGS-12K18MAX helps bring your energy plans together. Combine it with a compatible 48V battery bank and a properly sized solar array to support refrigeration, lighting, pumps, tools, and other compatible electrical loads. Build a solar power system that fits your property, your daily electricity consumption, and your plans for energy independence.
Use More Solar Power and Depend Less on Utility Electricity. Make your solar investment work harder by combining solar generation, battery storage, and utility power in one hybrid energy system. Store available solar energy for later use and design your setup to help offset electricity purchases while providing additional backup capability. Your potential savings depend on local utility rates, solar production, battery capacity, and installation costs, but the right system can help you take greater control of your household energy use and long-term power costs.
Get the Right Components for a Complete Solar Backup System. Whether you’re building a new solar installation or upgrading an existing rooftop system, the SGS-12K18MAX gives you a starting point for a customized power solution. Compatibility with existing solar equipment and the desired backup configuration must be confirmed before purchase. My Generator Plus can help you explore the inverter, solar panels, compatible batteries, and supporting equipment needed to create a package tailored to your power requirements. Build your solar backup system with My Generator Plus and take the next step toward reliable power and greater energy independence.


The Sungold Power SGS-12K18MAX 12kW 48V All-in-One Hybrid Solar Inverter is designed for homeowners and property owners who need substantial inverter output, 200A bypass capability, and the flexibility to combine solar generation, battery storage, and utility electricity. With support for up to 18kW of PV input per unit and parallel configurations that can scale to a stated 72kW, it offers a powerful foundation for whole-home backup, off-grid living, and larger solar energy projects.
Choosing the right system is about more than inverter wattage. Battery capacity, panel configuration, household loads, grid-interconnection requirements, and installation planning all determine the final result. Start with the SGS-12K18MAX and select compatible equipment around your real energy needs. Shop Sungold Power at My Generator Plus to take the next step toward dependable backup power and greater energy independence.
Certifications
UL1741&IEEE1547.1 - 2020
CEC
RULE 21
HECO
CEC Listed
The Sungold Power SGS-12K18MAX 12KW 48V All-in-one Hybrid Solar Inverter is the all-in-one hybrid inverter component of a whole-home solar and backup power system. The inverter-only product option does not automatically include solar panels, battery storage, or every component required for a complete installation.
To build a working solar energy system, you may need compatible 48V battery storage, solar panels, appropriately rated DC and AC wiring, circuit protection, disconnects, grounding equipment, and the components required for your home’s electrical service and backup configuration. Depending on the installation, additional transfer or service equipment may be necessary. Reviewing the complete system design before ordering helps ensure the inverter, battery bank, solar array, and electrical connections work together safely and as intended.










It can serve as the inverter for a whole-home backup design, but the loads supported during an outage depend on the inverter's available 12kW output, the home's electrical configuration, battery discharge capability, and the appliances running simultaneously. The 200A bypass rating does not mean the inverter can deliver 200A of battery-powered output. Have a qualified installer calculate your household's load requirements and design the backup system accordingly.
The 200A rating refers to the system's bypass or pass-through capability, which is relevant when designing the connection between utility service and household loads. It is distinct from the inverter's 12kW power output. The exact wiring arrangement and supported operating behavior should be confirmed in the current manufacturer manual and verified for your electrical service before installation.
The inverter supports up to 18kW of total PV input per unit according to the manufacturer. The number of panels depends on each panel's wattage, operating voltage, open-circuit voltage, current, and the inverter's MPPT input specifications. A panel count cannot safely be determined from the 18kW figure alone. Check the datasheet for the permitted PV voltage and current ranges and have the solar strings designed to remain within all input limits.
The system is designed to coordinate solar generation, battery storage, and household power in hybrid applications. Depending on operating mode, available solar production, battery settings, and current loads, it can be configured to support household consumption while managing battery charging. The actual charging rate depends on the battery's permitted charge current, PV input, available AC charging, and system configuration. Consult the manual for supported simultaneous operating conditions.
The inverter is designed for compatible 48V battery systems, including SunGoldPower's supported battery options. Compatibility should be verified by nominal voltage, battery chemistry, maximum charge and discharge current, communication protocol, battery-management-system requirements, and supported firmware or settings. Do not assume that every battery marketed as 48V will communicate with or operate correctly with the inverter.
The amount of storage depends on which appliances you want to power and for how long. A home running essential loads may need much less energy than one attempting to maintain HVAC, electric cooking, water heating, and other large loads. Estimate daily energy consumption in kilowatt-hours, account for inverter losses and battery operating limits, and size the battery bank around the desired backup duration. The 12kW inverter rating describes output power, not stored energy.
The manufacturer describes the inverter as suitable for off-grid, grid-connected, and hybrid applications. To operate off-grid, it must be paired with compatible battery storage and a properly sized solar array or other supported charging source. System sizing should account for nighttime loads, poor-weather periods, seasonal solar production, and high-power appliances. A complete off-grid installation also requires the appropriate wiring, protection, grounding, and electrical design.
Possibly, but compatibility depends on the existing panels' electrical characteristics, string layout, current inverter, and the proposed connection method. The SGS-12K18MAX supports hybrid and AC-coupled system designs, but that does not guarantee that every rooftop solar installation can be connected directly. Have a qualified installer evaluate your current system and determine whether the panels, existing inverter, and proposed battery configuration can work together.
The manufacturer describes grid-interactive operation that can allow excess solar power to be fed back to the grid when the system is configured for that function. Actual export depends on the inverter's approved operating configuration, utility interconnection rules, local electrical requirements, and any required permission to operate. Confirm these conditions with your utility and installer before planning your system around energy export or net metering.
The manufacturer states that up to six compatible units can be connected in parallel, with a stated potential combined inverter capacity of 72kW. Parallel operation requires compatible equipment and a design that follows the manufacturer’s requirements for wiring, configuration, battery storage, PV input, protection, and load distribution. Confirm the exact permitted combinations and installation procedure in the current documentation before purchasing multiple units.
The manufacturer identifies 120/240V split-phase output for compatible residential applications. This can support a variety of common household circuits and equipment when the system is installed and configured correctly. Appliance compatibility still depends on circuit design, available output, current limits, and startup demand. Verify the inverter's supported output configuration in the datasheet before connecting specific 240V equipment.
Potentially, if the equipment's voltage, continuous power demand, startup current, and operating characteristics fall within the inverter and system limits. Air conditioners and pumps can have substantial starting demands, even when their normal running wattage appears manageable. A load assessment should account for startup current and the possibility that several large appliances may operate simultaneously. The battery bank must also be capable of supplying the required discharge current.
The 12kW rating refers to the inverter's power output, while the 18kW rating refers to the maximum solar PV input specified by the manufacturer. These values describe different parts of the system. Solar input determines the capacity of the connected PV array within electrical limits, while inverter output determines how much AC power can be delivered to supported loads. Actual output also depends on solar conditions, conversion losses, battery operation, and system settings.
It may help reduce grid electricity purchases when solar production supplies household loads or when stored solar energy is used later. The financial outcome depends on local electricity prices, solar production, battery capacity, household consumption, installation costs, utility compensation rules, and system settings. Estimate expected solar production and self-consumption before purchase rather than assuming a particular savings amount. The inverter's capacity alone does not guarantee a specific reduction in bills.
The inverter is part of a solar energy management system, but the exact monitoring features, communication interfaces, and supported data should be verified in the current manual and product documentation. Do not assume that every third-party monitoring platform or smart-home system is compatible. Before purchase, confirm which information can be monitored, whether additional communications equipment is needed, and how the system reports solar production, battery status, and energy flow.
Bifacial panels may be suitable if their electrical characteristics fall within the inverter's PV input limits. Their rear-side generation depends on reflected light, installation height, ground reflectivity, spacing, and shading. The extra production potential does not remove the need to verify maximum open-circuit voltage, current, MPPT range, and permitted string configuration. Design the array using the panel datasheet and inverter manual rather than panel wattage alone.
The manufacturer specifies an IP65-rated enclosure, indicating protection against dust ingress and water jets under defined test conditions. It does not mean the inverter is waterproof under immersion or that every outdoor location is suitable. Follow the installation manual for mounting, environmental conditions, clearances, temperature limits, wiring access, and protection from exposure beyond the product's rating. Local code requirements still apply.
Whether a generator can be used depends on the inverter's supported AC input, operating modes, generator electrical characteristics, and manufacturer-approved wiring configuration. Do not connect a generator based solely on voltage similarity. Verify frequency, voltage stability, current limits, neutral and grounding requirements, and the approved connection method with the manual and a qualified installer before integrating another power source.
It may be a good fit when the property needs substantial inverter output, compatible battery storage, and a solar array sized for its energy consumption. A cabin or shed with modest loads may need a smaller system, while a farm, workshop, or larger home may benefit from the 12kW output and scalable design. Compare your expected loads, daily energy use, available solar area, and desired backup duration before deciding whether this system is appropriately sized.
Confirm that the inverter's output configuration matches your home's electrical service, that the battery is compatible, and that the solar array complies with all PV input limits. Establish whether you need an inverter-only product or a battery bundle, and verify which accessories and installation components are included. Also review the proposed 200A bypass arrangement, grid-interconnection requirements, backup load calculations, and applicable permits. A qualified solar installer can help turn these details into a complete system design that meets your home's actual power requirements.
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