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The Fronius Verto Plus is a powerful three-phase hybrid inverter range designed for larger residential, commercial and agricultural energy systems. Available in 15kW, 20kW and 25kW models, it combines high-current PV input, battery storage, intelligent shade management and strong three-phase backup capability in one flexible platform.
With three independent high-current MPP trackers, direct high-voltage battery integration and an exceptionally wide operating range, the Verto Plus is well suited to both new PV installations and the expansion of existing systems. Integrated Fronius Arc Guard, surge protection and smart system monitoring add another layer of safety and control for demanding energy applications.
The Fronius Verto Plus range is well suited to:
Large residential solar and battery systems
Small businesses and commercial properties
Agricultural and farm installations
Apartment buildings and multi-residential projects
Complex rooftops with multiple orientations
Systems using modern high-current PV modules
Properties requiring substantial three-phase backup power
EV charging and smart energy management
New PV systems and expansion of existing installations
3 independent high-current MPP trackers
Up to 37.5kWp PV generator capacity
Up to 28A input current per MPPT
Wide 150β1000V DC input range
150β700V high-voltage battery support
Up to 50A battery charge / discharge current
Powerful three-phase Full Backup
Up to 50kVA short-duration peak backup output
Dynamic Peak Manager for improved yield under shading
Integrated Fronius Arc Guard (AFCI)
Integrated DC Type 1+2 and AC Type 2 surge protection
IP66 protection for indoor and outdoor installation
Remote monitoring via Fronius Solar.web
Made in Austria
Three independent MPP trackers give the Verto Plus considerable flexibility for complex PV layouts, different roof orientations and larger arrays.
Each MPPT supports two DC connections and up to 28A usable input current, while the inverter operates across a broad 150β1000V DC input range with a usable MPP range of 150β870V.
Maximum PV generator capacity scales with inverter size:
Verto 15.0 Plus β up to 22.5kWp
Verto 20.0 Plus β up to 30kWp
Verto 25.0 Plus β up to 37.5kWp
This flexibility makes the Verto Plus particularly suitable for larger systems where array design is more complex than a typical residential installation.
Fronius Dynamic Peak Manager helps the inverter find the optimum operating point of the PV array even when panels are affected by partial shading.
By continuously evaluating PV performance rather than relying on a single conventional operating point, the system can help maintain stronger energy yield across changing rooftop conditions.
The Verto Plus integrates directly with compatible high-voltage battery systems operating from 150V to 700V.
All three models support up to 50A nominal battery charging and discharging current, while power capability increases with inverter size:
| Model | Max. Charging Power | Max. Discharging Power |
|---|---|---|
| Verto 15.0 Plus | 22.5kW | 15kW |
| Verto 20.0 Plus | 30kW | 20kW |
| Verto 25.0 Plus | 33.25kW | 25kW |
Compatible storage options include Fronius Reserva, Reserva Pro and selected BYD Battery-Box HVM, HVS, HVM+, HVS+ and HVB systems.
When paired with a compatible battery system and the required external grid-switchover components, the Verto Plus can provide three-phase Full Backup for the building.
Rated Full Backup output matches inverter power:
Verto 15.0 Plus β 15kVA
Verto 20.0 Plus β 20kVA
Verto 25.0 Plus β 25kVA
For demanding short-duration loads, peak backup power reaches:
Verto 15.0 Plus β up to 30kVA
Verto 20.0 Plus β up to 30kVA
Verto 25.0 Plus β up to 50kVA
This additional short-term capacity can help support larger loads such as heat pumps, cooling equipment, fans and workshop machinery when system conditions allow.
The Verto Plus incorporates a comprehensive set of protection features directly into the inverter.
These include:
Fronius Arc Guard arc-fault detection
DC insulation monitoring
Integrated DC disconnector
Reverse-polarity protection
Residual current monitoring
DC Type 1+2 surge protection
AC Type 2 surge protection
Integrated Wired Shutdown
The combination of built-in arc detection and surge protection reduces the need for additional safety components while providing a strong foundation for larger PV installations.
Fronius Solar.web enables remote monitoring of system performance and operating data, while open communication interfaces make it easier to integrate the inverter into a broader energy-management system.
Connectivity includes:
WLAN
Ethernet LAN
2 Γ RS485
Modbus TCP SunSpec
Modbus RTU SunSpec
Integrated datalogger and web server
6 digital inputs
6 digital inputs/outputs
Integrated Wired Shutdown
The platform can also integrate with compatible equipment such as Fronius Smart Meter, battery storage, EV charging and load-management solutions.
With an IP66 enclosure, the Verto Plus is designed for indoor and outdoor installation.
Regulated air cooling helps maintain operating performance across an ambient temperature range of -25Β°C to +60Β°C, while installation flexibility from approximately 90Β° to 10Β° tilt helps accommodate a range of site conditions.
All three models measure 865 Γ 574 Γ 279mm and weigh 43kg.
| Specification | Verto 15.0 Plus | Verto 20.0 Plus | Verto 25.0 Plus |
|---|---|---|---|
| Rated AC Power | 15kW | 20kW | 25kW |
| Max. PV Generator Output | 22.5kWp | 30kWp | 37.5kWp |
| MPP Trackers | 3 | 3 | 3 |
| Inputs per MPPT | 2 | 2 | 2 |
| Max. Input Current per MPPT | 28A | 28A | 28A |
| Max. Short-Circuit Current per MPPT | 50A | 50A | 50A |
| DC Input Voltage Range | 150β1000V | 150β1000V | 150β1000V |
| Battery Voltage Range | 150β700V | 150β700V | 150β700V |
| Max. Battery Current | 50A | 50A | 50A |
| Max. Battery Charging Power | 22.5kW | 30kW | 33.25kW |
| Max. Battery Discharging Power | 15kW | 20kW | 25kW |
| Rated Full Backup Output | 15kVA | 20kVA | 25kVA |
| Peak Backup Output | 30kVA | 30kVA | 50kVA |
| Max. Efficiency | 98.03% | 98.15% | 98.16% |
| European Efficiency | 97.35% | 97.95% | 97.74% |
| Protection Rating | IP66 | IP66 | IP66 |
| Dimensions | 865 Γ 574 Γ 279mm | 865 Γ 574 Γ 279mm | 865 Γ 574 Γ 279mm |
| Weight | 43kg | 43kg | 43kg |
| Country of Manufacture | Austria | Austria | Austria |
Complies with applicable standards including IEC 62109-1/-2, VDE-AR-N 4105:2018, VDE-AR-N 4110:2023-09, EN 50549-1/-2, IEC 62116, IEC 61727, AS/NZS 4777.2:2020+A1, IEC 63027:2023 and G99.
The Fronius Verto Plus is built for energy systems where greater PV capacity, battery power and installation flexibility are required.
Three high-current MPPTs make it well suited to complex and larger PV arrays, while high-power battery integration allows significant amounts of solar energy to be stored and reused later. Full Backup adds resilience for buildings with demanding loads, and integrated Arc Guard, surge protection and intelligent shade management strengthen both safety and system performance.
For larger homes, businesses, farms and apartment buildings, the Verto Plus provides a flexible hybrid platform designed to bring solar generation, storage, backup and intelligent energy management together in one system.
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.