EV Accessories and Mounting
Fronius Reserva Pro 28.0 Battery Set 27.9 kWh – High-Voltage Solar Battery for Professional Energy Storage Systems
The Fronius Reserva Pro 28.0 battery set with 27.9 kWh usable capacity is a high-voltage lithium energy storage solution engineered for professional PV and hybrid inverter installations. Designed for seamless integration within the Fronius ecosystem, this solar battery system supports advanced self-consumption optimization, peak shaving strategies, and backup-ready configurations for residential, commercial, and light-industrial applications.
Built for installers, EPC contractors, and solar wholesalers, the Reserva Pro 28.0 provides scalable high-capacity storage within a structured, compliant energy storage architecture.
Engineered for Hybrid Inverter Integration
The Fronius Reserva Pro 28.0 is designed for native compatibility with approved Fronius hybrid inverter platforms. The high-voltage configuration supports efficient DC-coupled energy storage design, minimizing conversion losses and optimizing overall system round-trip efficiency.
Key integration advantages include:
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Direct communication with compatible Fronius hybrid inverter systems
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Optimized DC coupling for reduced energy conversion losses
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Seamless monitoring via Fronius Solar.web platform
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Coordinated inverter-battery energy management
For installers, this reduces commissioning complexity and ensures predictable system behavior in grid-tied and backup configurations.
27.9 kWh Capacity for Advanced Residential and Commercial Applications
With nearly 28 kWh of storage capacity, the Reserva Pro 28.0 is particularly suited for:
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Larger residential PV systems with high evening consumption
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Homes with heat pumps, EV charging, and increased electrification
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Commercial PV installations requiring peak load management
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Small industrial energy storage applications
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Hybrid PV + battery projects targeting higher autonomy ratios
The increased storage volume supports optimized self-consumption rates and improved economic return in markets with dynamic electricity tariffs.
High-Voltage Architecture for Professional System Design
The 28.0 kW high-voltage lithium battery platform enables efficient energy flow within modern hybrid inverter systems. Compared to low-voltage storage solutions, high-voltage systems offer:
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Reduced current levels on the DC side
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Lower cable losses
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Improved system efficiency
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Structured scalability within approved configuration ranges
This makes the Fronius Reserva Pro 28.0 suitable for structured system design within professional PV planning frameworks.
Monitoring, Commissioning and Fleet Management
When installed with compatible Fronius inverter systems, the Reserva Pro 28.0 supports advanced monitoring functionality via Solar.web. Installers and operators gain visibility over:
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State of charge (SoC)
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Charging and discharging cycles
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Energy flows between PV, battery, and grid
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System performance over time
This supports remote diagnostics, service planning, and long-term performance monitoring across residential and commercial portfolios.
Compliance and Safety for European Installations
The Fronius Reserva Pro battery system complies with relevant European safety and transport standards applicable to high-voltage lithium energy storage systems. Depending on the specific market configuration, documentation may include CE conformity, IEC 62619 compliance, UN 38.3 transport certification, and other relevant regulatory approvals.
Integrated battery management system (BMS) functions provide continuous monitoring, temperature control, and operational protection to ensure safe and reliable performance under normal operating conditions.
Suitable for Solar Wholesalers and EPC Procurement
The Fronius Reserva Pro 28.0 battery set is structured for professional distribution and project-based procurement. It is suitable for:
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Solar wholesalers building Fronius ecosystem portfolios
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EPC contractors delivering integrated PV + energy storage solutions
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Installers offering high-capacity hybrid inverter systems
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Complete kits combining solar panels, Fronius inverter, mounting system, and battery storage
Its alignment with the Fronius product ecosystem simplifies compatibility verification and supports streamlined project planning.
Application Overview
The Fronius Reserva Pro 28.0 27.9 kWh high-voltage solar battery is ideal for:
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Residential solar battery installations
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Commercial rooftop PV with energy storage
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Hybrid inverter systems with backup configuration
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Energy storage upgrades in electrified buildings
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High-consumption households and SME facilities
You need a Fronius inverter for your solar panel system in your home? Check out our Fronius Inverters or hybrid inverters. Read more about Fronius energy storage our solar blog or sign in to one of our Fronius webinars or visit our 3Buy Solar Youtube Channel for more; or alternatively check the Fronius Manufacturers Website.
Product Datasheet and Downloads
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Installation and User Manual Fronius Reserva Pro EN
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QUICK Installation Guide Fronius Reserva Pro EN
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Installations- und Benutzerhandbücher Fronius Reserva Pro DE
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Fronius Hybrid Wechselrichter Batterie Kompatibilitätsliste DE
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Fronius Reserva Pro BMS User Manual
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CE Declaration of Conformity
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ROHS Certificate
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REACH Certificate
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MSDS Certificate
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Manufacturer Warranty Fronius Reserva Pro ESS
FAQ: Fronius Reserva Pro 28.0 (27.9 kWh)
The Fronius Reserva Pro 28.0 high-voltage solar battery is designed for integration with compatible Fronius hybrid inverter platforms, including approved GEN24 Plus models. Compatibility depends on the exact inverter variant, firmware version, and regional certification requirements. Installers should always verify the latest Fronius compatibility documentation before system design and commissioning.
Watch our solar trainings and webinars or visit you 3Buy Youtube Channel. … or alternatively you can browse for our latest articles regarding renewable and energy efficient heating and cooling in our Solar Distributor Blog.
Have you checked all our products? Go to our Solar PV and Energy Storage Shop | 3Buy Installer-Grade & DIY EU
Yes. The Fronius Reserva Pro 28.0 Battery Set with 27.9 kWh usable capacity is specifically designed for larger residential PV installations and commercial energy storage applications where higher daily energy demand and extended self-consumption are required.
With its 27.9 kWh high-voltage lithium storage capacity, the Fronius Reserva Pro 28.0 supports advanced hybrid inverter systems, peak-shaving strategies, and structured load management in modern high voltage solar battery installations. It is particularly suitable for projects that include EV charging, heat pumps, or increased electrification, where a high-capacity solar energy storage system is essential for long-term performance and system stability.
Backup operation depends on the hybrid inverter model and installed backup configuration. When paired with a compatible Fronius hybrid inverter and properly configured system components, the Reserva Pro 28.0 can support backup operation for selected circuits during grid outages, subject to local electrical regulations.
Yes. The Fronius Reserva Pro 28.0 Battery Set with 27.9 kWh capacity is specifically engineered for integration into complete PV and energy storage systems based on compatible Fronius hybrid inverter platforms.
As a high-voltage solar battery solution, the 27.9 kWh Fronius Reserva Pro 28.0 enables efficient DC-coupled system design, optimized self-consumption, and advanced load management in residential and commercial solar installations. It can be combined with solar panels, Fronius hybrid inverters, and monitoring systems to create a fully integrated solar battery and energy storage system tailored to professional installer requirements.
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