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The Solis S6-EH3P15K-H-AU and S6-EH3P20K-H-AU are high-voltage three-phase hybrid inverters designed for larger residential and light commercial energy systems. With 4 MPPTs, up to 160% PV input capacity, high-voltage battery support, generator integration and <10ms backup switching, they provide a flexible platform for solar, storage and backup power.
Large three-phase residential systems
Light commercial solar and battery installations
Properties with multiple roof orientations
Generator-assisted backup systems
EV charging and heat-pump applications
VPP and smart energy management
Systems requiring future expansion
When paired with an HGNESS high-voltage modular battery, the Solis three-phase hybrid inverter becomes part of a scalable energy storage system designed for larger homes, businesses and backup-critical applications. The combination brings together Solis hybrid inverter control with HGNESS modular LiFePOβ storage, allowing more solar energy to be stored for later use, supporting backup power during outages and giving the system room to expand as energy demand grows. With smart solar utilisation, three-phase backup capability and modular storage architecture, the pairing is particularly well suited to high-consumption properties seeking greater energy independence and long-term flexibility.
4 independent MPPTs
Up to 160% PV input capacity
20A PV input current per MPPT
120β800V lithium battery support
Up to 50A charge / discharge current
<10ms backup switching
160% backup overload for 10 seconds
Generator integration with automatic control
DC and AC coupling support
Up to 6 units in parallel
AI-powered and VPP-ready energy management
PV-only off-grid mode
7-inch LCD with Bluetooth app
IP66 protection
Four MPPTs support complex PV layouts and different roof orientations, while 20A input current per MPPT improves compatibility with modern high-power solar modules.
Maximum recommended PV array size is 30kW for the 15kW model and 40kW for the 20kW model.
The inverter supports lithium batteries across a 120β800V range with up to 50A charge and discharge current.
Both models switch to backup operation in less than 10ms and can deliver up to 160% of rated apparent power for 10 seconds, helping support short-duration starting loads such as motors, pumps and air-conditioning equipment.
Generator input is also supported, with maximum generator power of 15kW on the 15kW model and 20kW on the 20kW model.
AI-powered energy management and VPP readiness help optimise solar generation, battery charging and connected loads.
The system also supports DC and AC coupling, SG-Ready heat pump connectivity, customisable battery backup levels and parallel expansion of up to six units.
| Specification | S6-EH3P15K-H-AU | S6-EH3P20K-H-AU |
|---|---|---|
| Rated AC Output | 15kW | 20kW |
| Recommended Max. PV Array | 30kW | 40kW |
| MPPTs | 4 | 4 |
| Max. PV Input Current | 4 Γ 20A | 4 Γ 20A |
| Battery Voltage Range | 120β800V | 120β800V |
| Max. Battery Current | 50A | 50A |
| Rated Backup Output | 15kW | 20kW |
| Backup Peak Output | 1.6 Γ rated power / 10s | 1.6 Γ rated power / 10s |
| Generator Input Power | 15kW | 20kW |
| Max. Efficiency | 97.7% | 97.7% |
| Protection Rating | IP66 | IP66 |
| Dimensions | 563 Γ 546 Γ 250mm | 563 Γ 546 Γ 250mm |
| Weight | 35.2kg | 35.2kg |
The IP66 enclosure supports demanding installation environments, while integrated protection includes surge protection, output over-current protection, insulation monitoring, residual current detection, an integrated PV switch and DC reverse-polarity protection.
The inverter operates from -25Β°C to +60Β°C and uses intelligent redundant fan cooling.
This version is much cleaner because each section has a distinct job instead of repeating the same PV, battery and backup numbers several times.
Complies with AS 4777.2:2020 and applicable IEC/EN 62109-1/-2 and IEC/EN 61000-6-1/-2/-3/-4 requirements.
The Solis S6-EH3P15K-H-AU and S6-EH3P20K-H-AU combine high PV capacity, battery storage, fast backup switching and generator integration in one flexible three-phase platform.
Four MPPTs and 20A input current per MPPT make the range well suited to larger modern PV systems, while DC and AC coupling, PV-only off-grid operation and parallel expansion provide flexibility for future system growth.
For larger homes and light commercial properties that need strong solar input, scalable storage and reliable backup capability, the 15kW and 20kW models offer a practical and adaptable energy solution.
All our products are covered by the Manufacturer's Warranty, which guarantees that they will be free from defects in materials and workmanship under normal use and service. The specific terms and duration of the warranty may vary depending on the product and the manufacturer. Please refer to the product's documentation or contact our customer support team for detailed warranty information.
Warranty Claim Process
In the unfortunate event that you encounter a faulty product, we want to make the warranty claim process as seamless as possible for you. To initiate a warranty claim, please follow these steps:
If damage is confirmed to be from normal wear-and-tear, drops, unauthorized repairs, or other non-warranty factors, service and shipping fees will apply. In such cases, we will contact the customer for approval before proceeding with paid repairs.
Unfortunately we cannot provide loaner units during the warranty repair process. For mission-critical equipment, we highly recommend purchasing backup units to prevent downtime in case of defects.
You have 30 calendar days to return an item from the date you received it.
To be eligible for a return:
Upon receiving your order, we kindly request that you thoroughly inspect all packages within 7 days of delivery. This inspection period is crucial as it allows you ample time to identify any visible damage caused during transit. Please keep in mind that promptly reporting any freight damage is vital in safeguarding your right to file a claim and ensuring a swift resolution.
Should you identify any freight damage during the inspection, we urge you to notify us immediately. Our customer support team is ready to assist you through the claim filing process and provide the necessary guidance to ensure a smooth and hassle-free experience.
The advertised price for this product includes the applicable STC battery rebate, applied as a pre-discount at the time of purchase.
To be eligible for the battery rebate:
Supply-only purchases are not eligible for the battery rebate.
By proceeding with this purchase, the customer agrees to assign all eligible Small-scale Technology Certificates (STCs) associated with the battery installation to Solar Battery Supermarket (or its nominated agent).
This assignment allows the rebate to be applied as a point-of-sale discount.
If the customer does not agree to assign the STCs, the full non-rebated price of the battery system will apply.
Installation by a licensed and accredited installer is mandatory to qualify for the rebate-adjusted price.
Standard metro installation is available from $500, subject to property assessment.
Additional works (including switchboard upgrades, long cable runs, or non-standard installations) may incur extra charges and will be quoted and approved prior to installation.
To assess eligibility and proceed with installation, the customer may be required to provide:
Failure to provide required information may delay installation or affect rebate eligibility.
This rebate offer does not limit your rights under Australian Consumer Law.