Fronius Reserva Pro 28.0 high-voltage battery 27.9 kWh
More energy independence for large requirements
The Fronius Reserva Pro is the ideal solution for large residential buildings, commercial enterprises and farms where high energy requirements need to be covered reliably.
The powerful high-voltage battery for PV power not only supports high loads, but also increases self-consumption and effectively reduces energy costs. In combination with the hybrid inverters Fronius Verto Plus or GEN24 Plus , your PV system is also emergency power and black start capable and can therefore restart independently even without a mains supply.
Made in Europe*
The Fronius Reserva Pro is produced within a European value chain: *Both the battery cells and the modules are manufactured in Europe and meet the highest quality and safety standards. This ensures short delivery routes, stable availability and funding opportunities. In Austria, the Reserva Pro qualifies for the "Made in Europe Bonus".
More capacity, more control
The Fronius Reserva Pro is the modular high-voltage storage system for increased energy requirements. Each tower consists of 3 to 8 modules and offers 12 to 32 kWh of usable capacity. Thanks to the parallel connection of a maximum of four towers , a total of up to 128 kWh is possible. In combination with the Fronius Verto Plus hybrid inverter,high charging and discharging capacities of up to 28.3 kW are possible for large consumers thanks to efficient DC coupling .
With the Fronius guarantee, you are assured of 10 years of stable performance. Durable LFP cells and integrated protection mechanisms ensure smooth operation far beyond the warranty period. For particularly economical and demand-oriented operation, the AI-supported Fronius Energy Cost Assistant continuously analyzes PV yield, consumption and electricity prices and optimally adapts the storage strategy accordingly.
Highlights:
1. flexibly scalable
With 3 to 8 modules per tower, the Reserva Pro offers a storage volume of 12 to 32 kWh as required - and can even be expanded to a maximum capacity of 128 kWh with up to four battery towers connected in parallel. This means that the system grows flexibly with your energy requirements and is perfect for large residential buildings, commercial operations and agricultural applications with high energy requirements and high starting currents.
2. emergency power and black start capability
The Fronius Reserva Pro supplies energy reliably and safely, even in the event of grid failures: thanks to its emergency power and black start capability, important loads can continue to operate while the system restarts itself or as long as residual energy is available. This means that both processes that cannot be postponed and essential systems such as heat pumps, cooling and ventilation systems and commercial machinery remain in continuous operation - and your company is optimally protected around the clock. Ideal for all areas where security of supply is the top priority.
3. AI-supported energy management
The Fronius Energy Cost Assistant uses modern AI algorithms to continuously analyze your PV yield, energy consumption and current electricity prices and adapts the storage strategy accordingly. This allows you to use your PV system and battery storage system economically in the long term and also save noticeable energy costs - without any additional hardware.
4. complete Fronius system integration
From commissioning and monitoring to intelligent energy management: the Fronius Reserva Pro can be automatically commissioned with our Fronius hybrid inverters. Our digital tools, such as Fronius Solar.web and our Energy Cost Assistant, enable seamless integration of the battery storage system into the Fronius ecosystem.
Technical data
| Specifications |
Reserva Pro 12.0 |
Reserva Pro 16.0 |
Reserva Pro 20.0 |
Reserva Pro 24.0 |
Reserva Pro 28.0 |
Reserva Pro 32.0 |
| Usable energy |
11.9 kWh |
15.9 kWh |
19.9 kWh |
23.9 kWh |
27.9 kWh |
31.9 kWh |
| Number of battery modules |
3 |
4 |
5 |
6 |
7 |
8 |
| Nominal voltage |
212,52 V |
283,36 V |
354,2 V |
425,04 V |
495,88 V |
566,72 V |
| Voltage range |
165 ~ 240,9 V |
220 ~ 321,2 V |
275 ~ 401,5 V |
330 ~ 481,8 V |
385 ~ 562,1 V |
440 ~ 642,4 V |
| Maximum output current1
|
50 A |
|
|
| Battery cell chemistry |
Lithium iron phosphate (LFP) |
|
|
| Parallel operation |
up to 4 batteries
|
|
|
| Dimensions (height x width x depth |
775 x 579 x 449 mm |
935 x 579 x 449 mm |
1,095 x 579 x 449 mm |
1,255 x 579 x 449 mm |
1,415 x 579 x 449 mm |
1,575 x 579 x 449 mm |
| Weight |
126 kg |
162 kg |
198 kg |
234 kg |
270 kg |
306 kg |
| Compatible inverters |
Fronius Primo GEN24 Plus, Symo GEN24 Plus & Verto Plus |
| Protection class |
IP65 |
| Maximum height above sea level |
2.000 m |
| Ambient temperature² |
-20 to +50°C |
| Permissible humidity |
5-95 % |
| Installation location |
Indoor area and protected outdoor area |
| DC connection technology |
Stäubli MC4-Evo |
| Certificates and compliance with standards |
VDE2510-50 / IEC 62619:2022 / IEC62040-1 / CE / RCM / UN38.3 |
| Interfaces |
Modbus (RS485) |
| Warranty period |
10 years (80% SOH) |
1 The charging and discharging current is limited by the inverter.
2 The charging/discharging power can be limited depending on the temperature.
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