Store & use solar energy flexibly

Store Solar Energy

for Flexible Use

Solar power, even if the sun is not shining

With a photovoltaic system, you generate and use your own solar power when the sun is shining. With a storage unit, the electricity you produce yourself is always available when you need it - even in the morning and evening hours when the sun is not shining.

Advantages of energy storage systems

☀ Lower energy costs
Use more of your own solar power, draw less energy from the grid and save on costs.

☀ Increase independence
With a storage unit, you gain independence from rising electricity prices.

☀ Guaranteed power supply
If there is a power failure, you can supply your own solar power from the storage unit.

Use solar power, even at night

A photovoltaic system produces electricity during the day when the sun is shining. In a typical household, however, the electricity demand is highest in the morning and evening hours. This is precisely when little or no electricity is being produced.

In order to use as much solar power as possible instead of expensive electricity from the public grid, you can either postpone your energy consumption until the sun is shining, or store solar energy for later.

Backup power supply in the event of a blackout

Most photovoltaic systems are automatically disconnected from the grid and switched off during a grid blackout.

However, with an emergency-capable hybrid inverter, a battery storage system and a grid switching device, the PV system also runs when it is disconnected from the grid, and you can continue to supply yourself with your own energy during a power outage.

Use solar energy around the clock with the Fronius Reserva. The high-voltage battery with DC coupling ensures highly efficient energy transfer. Thanks to its modular capacity of 6.3 to 15.8 kWh, it adapts flexibly to your needs. Perfectly matched to Fronius hybrid inverters, it integrates perfectly into your PV system. Your data remains secure on European servers, while our proven service & support team is always there for you.

More about the Fronius Reserva

How a photovoltaic system with storage unit works

In this way the energy from your own roof can be used throughout the household.

Keep an eye on your photovoltaic system at all times

With the free Fronius Solar.web monitoring tool, you can keep an eye on your energy yield and consumption at all times and get the most out of your photovoltaic system.

Ensure functionality
Shorten the payback period
Expose energy guzzlers
Analyse and optimise energy consumption
Keep the system up-to-date
Save more money with individual extensions
Extend warranty free of charge

More about system monitoring

Fronius UP.storage

For those who still can’t decide: With the Fronius UP.storage* software upgrade for the Fronius GEN24, the existing device can be retrofitted with a battery connection at any time, including the Full Backup option.**

_{* Available in the
Fronius webshop in selected countries.}

_{** Not available
for the Fronius Symo GEN24
3.0–5.0 Plus.}

What capacity of storage system do I need?

The size, or capacity, of a storage unit is calculated based on your individual energy requirements. With the right storage unit, you can increase your self-sufficiency with solar energy to up to 85%,
meaning that energy costs decrease and your energy independence increases.

The following rule of thumb applies when selecting the correct storage unit:

Households with average electricity consumption during the day

__kWh annual power consumption / 1000 x 1.2 = __ kWh storage capacity

Households with low electricity consumption during the day

__kWh annual power consumption / 1000 x 1.5 = __ kWh storage capacity

The Fronius Energy Cost Assistant automatically supports you as a PV system owner with battery storage to improve your energy use. This allows you to get the most out of your storage system and also save on electricity costs. Thanks to advanced AI technology, the energy cost assistant continuously analyzes the expected PV production of your system, your energy consumption and the current electricity price and adapts the storage strategy accordingly.

Find out more about the Energy Cost Assistant

High quality, worthwhile investment

Smart technology
With its intelligent inverters, Fronius is able to offer extremely energy-efficient photovoltaic storage solutions.
75 years of experience
More than seven decades ago, Günter Fronius founded the family-owned enterprise. Now the team is made up of 5,000+ people, and together they are driving forward the energy revolution.
Made in Austria
Fronius quality has always been produced in Austria. Sustainable production is particularly important to us.
Strong partners
A Fronius partner near you – trained & certified by us – is available to help you with advice and support for your personal energy revolution.

What makes a good energy storage system?

Owing to our years of experience, we know what really matters when it comes to photovoltaic systems with storage units.

Particularly important is the interaction between storage unit and inverter. Only when these two components work together smoothly can you use your own solar power in a truly flexible and efficient way. This particularly applies n the event of a blackout.

Fronius inverters in combination with high-quality storage units enable flexible charging management: Thanks to the possibility of parallel energy flows, for example, the household can be supplied with solar power and a storage unit can be charged at the same time. You also have the choice of two backup power variants and can expand your Fronius system on a modular basis at any time. Your PV system with storage unit is therefore the perfect basis for a sustainable energy supply.

Are you interested in a photovoltaic system with energy storage solution?
Our Fronius System Partners will be happy to advise you and see to your individual needs.