Hybrid Solar Kit · 12,000W · 48.21kWh · 10,620W PV
12kW Hybrid Solar Kit with 48.21kWh Outdoor Storage and 10.6kW of Bifacial Solar
The largest of the SGS12K series: a UL 9540 certified 12kW whole-home hybrid system with 48.21kWh of outdoor-rated PowerMax storage and 10,620W of 590W bifacial N-type solar – enough to ride through multi-day outages.
SGS12K-PM3-590 Overview
The SGS12K-PM3-590 is built for homes that want real energy independence rather than a few hours of backup. Three PowerMax 314 Outdoor batteries give 48.21kWh of LiFePO4 storage – roughly two days of typical household use – in IP65 cabinets that can be installed outside, and the SGS-12K18MAX hybrid inverter runs the whole house through its 200A pass-through while exporting surplus solar to the grid.
Eighteen SGN-590-BDG1 bifacial N-type panels (22.8% efficiency, 144 half-cut cells) provide 10,620W of PV, about 42kWh per day at four sun hours before bifacial gain. The 590W format means fewer modules, less racking and fewer connections than a 450W array of the same output. The inverter still has room for up to 18kW of PV if you expand later.
Everything communicates in closed loop: inverter, batteries and app. Peak shaving, time-of-use scheduling, generator input, AC coupling with an existing PV inverter and UL1741 SB grid export are all built in, and the inverter/battery pair is certified as a UL 9540 ESS. PV extension cables, 4/0 AWG battery cables, 25A PV breakers, a 300A DC breaker and a 400A bus bar are included.
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SGS12K-PM3-590 Key Features
48.21kWh of outdoor storage
Three PowerMax 314 batteries in parallel – 942Ah at 51.2V, IP65, 8,000 cycles, UL1973 / UL9540A, CEC listed.
10,620W of 590W bifacial panels
Eighteen high-efficiency N-type dual-glass modules with 30-year performance warranty and rear-side gain.
200A whole-home hybrid inverter
SGS-12K18MAX: 12kW split-phase output, 18kW PV input, grid export, AC coupling, RSD and AFCI, IP65, 10-year warranty.
UL 9540 certified system
Inverter and batteries listed together, simplifying permits and utility interconnection.
Multi-day autonomy
Run a typical 20-25kWh/day home for about two days from the batteries alone, longer with solar.
Complete DC wiring
300A DC breaker, 400A bus bar, 4/0 AWG battery cables, 50 ft PV cables and PV breakers included.
What’s in the Kit
- 1×SGS-12K18MAX 12kW 48V all-in-one hybrid solar inverter
- 18×SGN-590-BDG1 590W bifacial N-type monocrystalline solar panels
- 3×PowerMax 51.2V 314Ah 16.07kWh outdoor LiFePO4 batteries
- 2×50 ft solar extension cables (inverter PV input)
- 2×4/0 AWG battery cables
- 2×25A PV breakers
- 1×300A DC breaker
- 1×400A bus bar
What 48.21kWh of storage can run
Estimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.
SGS12K-PM3-590 Common Questions
How long will 48.21kWh run my home?
A typical home using 20-25kWh per day can run about two days on the batteries alone; with 10.6kW of solar recharging them, most homes stay powered indefinitely in reasonable weather.
Why 590W panels instead of 450W?
Fewer modules for the same array size: 18 x 590W (10,620W) needs less racking, fewer connectors and less roof area than a 450W array, at 22.8% efficiency.
Is it grid-tied?
Yes. The SGS-12K18MAX is UL1741 SB / IEEE 1547 certified for grid export and also runs fully off-grid.
Does the kit ship free?
Yes – free shipping within the contiguous USA (freight delivery for kits), $0 sales tax in most states.
SGS12K-PM3-590 Specifications
SGS-12K18MAX 12kW Hybrid Solar Inverter
| Inverter Output | |
| Rated output power | 12,000W @ 240V / 10,400W @ 208V |
| Peak power | 1.5 x rated (10s) |
| Rated output voltage | 120/240Vac split-phase or 120/208Vac three-phase |
| Output current | 50A |
| Load motor capacity | 6HP |
| Frequency | 50/60Hz |
| Waveform | Pure sine wave |
| Parallel capacity | Up to 6 units (72kW) |
| Battery | |
| Battery type | Lithium-ion / lead-acid / user-defined |
| Rated battery voltage | 48Vdc |
| Voltage range | 40-60Vdc |
| Max grid charging current | 200A |
| Max generator charging current | 200A |
| Max hybrid charging current | 240A |
| PV Input | |
| MPPT trackers | 2 |
| Max PV array power | 9,000W + 9,000W (18kW) |
| Max input current | 32A / 32A |
| Short-circuit current | 40A / 40A |
| Max open-circuit voltage | 550Vdc |
| MPPT voltage range | 125-450Vdc |
| MPPT tracking efficiency | 99.9% |
| Grid / Generator Input | |
| Input voltage range | 90-140Vac |
| Frequency range | 50/60Hz |
| Continuous grid pass-through | 200A |
| General | |
| Dimensions | 33.07 x 17.32 x 10.24 in (840 x 440 x 260 mm) |
| Weight | 105.82 lb (48 kg) |
| Protection | IP65, indoor or outdoor |
| Operating temperature | -13°F to 140°F (derated above 113°F) |
| Noise | <60dB |
| Self-consumption | <100W |
| Cooling | Heat sink + intelligent fan |
| Communication | RS485 / CAN / USB / dry contact; Wi-Fi / GPRS optional |
| Protection functions | Reverse polarity, DC switch per MPPT, output over-voltage varistor, over-current, ground fault monitoring, grid monitoring, pole sensitive leakage current unit, AFCI, RSD |
| Certifications | UL1741 SB, DC Arc-Fault Circuit Protection, UL1699B:2018, CSA C22.2#107.1, California Rule 21, IEEE1547:2018, IEEE1547.1:2020, Hawaiian HECO SRD-IEEE-1547.1:2020 Ed.2.0, FCC 15 Class B |
| Warranty | 10 years |
PowerMax 314 Outdoor 16.07kWh LiFePO4 Battery
| Battery | |
| Rated voltage | 51.2V |
| Voltage range | 44.8-57.6Vdc |
| Rated capacity | 314Ah |
| Rated energy | 16.07kWh (15.42kWh usable) |
| Depth of discharge | >96% |
| Rated DC power | 7.68kW |
| Standard charge / discharge current | 150A / 150A |
| Max charge / discharge current | 190A / 190A |
| Peak charge / discharge current | 220A (3s) |
| Breaker | 240A |
| Cycle life | 8,000 cycles (80% DOD, 0.5C, 25°C) |
| Max charging voltage | 57.6V |
| Over-discharge voltage | 44.8V |
| Max parallel | 16 units (257kWh) |
| Communication | CAN / RS485 / USB / Wi-Fi / Bluetooth |
| Screen | Touch screen |
| General | |
| Standards | UL1973, UL9540A, UN38.3, MSDS; CEC listed |
| Charging temperature | 32-131°F (0-55°C) |
| Discharging temperature | 14-131°F (-10-55°C) |
| Storage | 6 months at 25°C; 3 months at 35°C; 1 month at 45°C |
| Cooling | Natural cooling |
| Enclosure | IP65, indoor and outdoor |
| Dimensions | 41.26 x 18.11 x 10.67 in (1048 x 460 x 271 mm) |
| Weight | 271.17 lb (123 kg) |
| Warranty | 10 years (15-year design life) |
SGN-590-BDG1 590W Bifacial N-Type Solar Panel
| Electrical | |
| Peak power | 590W (power tolerance 0/+5W) |
| Cell type | N-type monocrystalline, 144 cells (2 x 72) |
| Module efficiency | 22.8% |
| Bifaciality | 80% ±10% |
| Max power voltage (Vmp) | 44.40V |
| Max power current (Imp) | 13.29A |
| Open-circuit voltage (Voc) | 52.35V |
| Short-circuit current (Isc) | 13.90A |
| Mechanical | |
| Dimensions | 89.69 x 44.65 x 1.38 in |
| Weight | 69.45 lb |
| Construction | Bifacial dual-glass |
| Operating temperature | -40 to 185°F |
| Certifications | UL61730, CEC listed |
| Warranty | 12 years materials and workmanship, 30 years performance |
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