Reduce your electricity bills and become less dependent on your supplier. Use the stored solar energy when you need it most – in the evenings, at peak times or during power cuts.
Get up to €5,700 in compensation! The state financially supports energy storage devices if you choose to get one.
An energy storage device is a home battery in which you can ‘store’ the energy produced by your solar power plant.The state financially supports energy storage devices if you choose to get one. You can use the device when the sun doesn’t produce energy and grid electricity is expensive or gone.
With a solar power plant and storage, you can significantly reduce your electricity bills, and in some cases, avoid them altogether. It depends on the power of the plant and your electricity consumption habits.
Need more electricity, but ESO limits it? The accumulator switches on when the input power is no longer sufficient. This allows you to use more energy without increasing the input.
The accumulator can act as a backup home energy source (powerbank). In the event of a power outage, your devices will continue to operate using the stored energy from the battery (with back-up function).
ESO can limit the power plant’s capacity that can be connected to the grid. With a storage unit, you can install a more powerful power plant and use the excess energy for your home – without feeding it into the grid.
I have a solar power plant or am planning to get one.
I produce more electricity than I consume.
I want to use more of my energy - not give it to the grid.
Electricity is mostly needed in the evening/morning.
I want independence from power cuts.
There is a power shortage, but I can't increase the input.
If you fit at least 1 or more of these points – it’s worth considering a home energy storage device.
Not all. Some storage devices come with a “back-up” function that allows your home’s most important devices to work even if the power goes out. Without this feature, the accumulator only works when connected to the mains, so if the power supply fails, it stops too.
If you want to have electricity in any case, choose a model with back-up function.
In many cases – yes. The type of inverter (the device that connects the solar power plant to the electricity grid) you have is important.
If it’s a hybrid, you can connect the accumulator immediately.
If it’s a simple string, additional equipment will be needed.
💡 Not sure which inverter you have? See what’s written on the device or send us the model name – we’ll help you assess.
The capacity depends on how much electricity you want to store for use in the evening, at peak times or in the event of a power failure. This is usually based on average daily consumption.
To calculate it:
Divide your monthly consumption (kWh) by 30 or your annual consumption (kWh) by 365 to get your average daily demand.
Example: if you consume 6000 kWh per year, then:
6000 / 365 = ~16,4 kWh per day.
In most cases, an accumulator with a capacity of 8-12 kWh is sufficient to store around 50-70% of the daily demand.
Want precision? Our team can help you assess your consumption and find the optimal solution.
The type of battery used in the accumulators varies depending on their safety, lifetime, maintenance and installation options.
Lithium iron phosphate (LiFePO₄) batteries are the most commonly used – they are long-lasting, safe and maintenance-free, and are most often installed in a garage or other indoor space.
Lithium-ion (Li-ion) batteries are also common – they are more compact, cheaper, but more sensitive to environmental conditions and therefore only suitable for indoor use.
Not sure which type is best for you? – We’ll help you choose.
Home energy storage systems usually use two types of batteries.
They differ in terms of safety, lifetime and efficiency.
| ATTRIBUTE | LIUEL IRON PHOSPHATE (LiFePO₄) | Lithium-ion (Li-ion) |
|---|---|---|
|
Number of charging cycles ℹ️ |
6000–10000 |
2000–5000 |
|
Safety |
Very high |
High |
|
Lifetime |
10–15 years |
7–12 years |
|
Efficiency |
90–95 % |
90–95 % |
|
Temperature resistance |
–20 °C iki +60 °C |
–10 °C iki +50 °C |
|
Suitable storage location ℹ️ |
Recommended indoor spaces (garage, pantry) |
Recommended only in a room protected from frost |
|
Maintenance |
Not required |
Not required |
|
Size and weight |
50–100 kg (about the size of a washing machine) |
30–60 kg (can be hung on the wall) |
The information in the table is typical for medium-sized (15-20 kWh) household storage devices. Depending on their model, manufacturer or capacity, the information may vary.
The state finances €380 for every 1 kWh of storage capacity.
Funding is available for energy storage devices up to 15 kWh.
The call for proposals is active until xxxx-xx-xx or until funds run out.
The state funds €380 for every 1 kWh of storage capacity.
Funding was available for energy storage devices up to 15 kWh.
The call for applications was active until xxxx-xx-xx or until funds ran out.
Leave your email address and we’ll let you know when a new call is published.
For the accumulator to work with your power station, you need to know which inverter you have.
Some inverters allow you to connect the accumulator directly, others only with additional equipment.
* An inverter is a device that connects the solar power plant to your home’s electricity grid.
Upload a photo of your inverter and find out within 1 minute.
Choose a hybrid inverter – it’s storage-compatible, flexible and ready for future needs.
With accumulator, some of the energy produced by the solar plant no longer needs to be fed back into the grid – it can be stored and used later, in the morning, evening or in the event of a power cut. This allows you to significantly increase the use of your own energy and reduce your dependence on your supplier. The magnitude of the savings depends on consumption habits, with some users achieving as much as 70-90% of their own energy use, which significantly reduces monthly costs.
Yes, if the selected storage device has a back-up power function. In the event of a power outage, the storage unit automatically takes over and your home’s most important appliances – such as lights, fridge or internet – keep running. Not all storage devices can do this, so it’s important to choose a model with this option right away.
The price of an accumulator depends on the capacity and features you choose – usually between €4000 and €8000. Currently, state financial support for accumulators is inactive.
Just know your monthly or annual electricity consumption and our team will quickly calculate the optimal option. Usually 8-12 kWh is enough for household use, but we’ll be able to give you a more precise choice based on your habits.
Accumulators are usually installed inside the home – in the garage, storeroom or other utility room. They operate quietly and do not require constant maintenance. Size varies depending on capacity and manufacturer – some storage units are narrower and taller, while others are shorter and wider – so we’ll choose the right model for your space and needs. All our products meet safety requirements.
Yes, if you want to be more independent and make the most of the energy produced. The storage unit allows you to use the energy from the solar power plant when you need it most – not only during the day, but also in the evening or even during power cuts.
Make an enquiry and we’ll help you find the best storage solution for you and suggest an installation.
