Smart saving
Before we start buying energy from the grid, we consume the available energy from battery storage.
Night operation
Store excess energy during the day, then use it
from the batteries at night. The prerequisite is
photovoltaic panels.
Energy independence
Gain flexibility and independence from your
electricity distributor by smartly using your own
source of stored energy.
Peak Shaving
Do not pay for high reserved power. Use batteries to reduce peak draws and recharge the batteries when the load is low.
Optimal trading
Take advantage of the significant fluctuations in the energy market and
automatically profit from the SPOT market. AI
Software will automatically make you the most money
without affecting you in terms of consumption.
Replacement of generators
Batteries will replace your generators in the event of a
power outage, saving you money on fuel, maintenance and
the environment.
Subsidy 50%
for batteries
Our company ONSA Plus is monitoring the current funding opportunities for battery projects through available grants and subsidies.
We are currently waiting for the terms of a new grant call to be published in Q2 2025.
Typical assemblies
Small company
| Capacity: | 229 kWh |
| Implementation: | within 3 months |
| Price from: | 137 400 € without VAT |
More information
Medium-sized company
| Capacity: | 1 MWh |
| Implementation: | within 6 months |
| Price from: | 450 000 € without VAT |
More information
Big company
| Capacity: | 5 MWh |
| Implementation: | up to 8 months |
| Price from: | 1 500 000 € without VAT |
More information
Why with us?
Selected implementations of corporate battery storage
Wagon Slovakia Košice
The photovoltaic system with a total output of 71.4 kWp was installed for WAGON SLOVAKIA KOŠICE, a.s. The installation includes 168 panels with an output of 425 W, complemented by Fronius Eco and Victron inverters, and the system is also equipped with a battery storage of 100 kW and a capacity of 229 kWh with the possibility of energy trading.
| The size of the power plant: | 71.4 kWp |
| Storage size: | 229 kWh |
| Implementation: | 6 months |
Annual production
80 MWh
Annual savings
40 %
Returns
4 years
HOKOTEX
A photovoltaic system was installed in Rozvojova Street in Košice for a textile warehouse. The system uses 44 Canadian Solar CS7L panels with a power output of 600 W, 28 Jinko Solar 445N panels and a GoodWe ET hybrid inverter. The energy from the panels is stored by six Soluna batteries with a total capacity of 90 kWh, ensuring stable and reliable operation of the system, reducing electricity costs and supporting the energy independence of the warehouse.
| The size of the power plant: | 38.9 kWp |
| Storage size: | 90 kWh |
| Implementation: | 2 months |
Annual production
40 MWh
Annual savings
60 %
Returns
6 years
Maximus Slovakia: Kosice-Olsany
The installation includes a 10 kWp photovoltaic system, an 11 kW Fronius car charger and a BYD battery with a capacity of 22.1 kWh. This system enables efficient use of solar energy for self-consumption and charging of electric vehicles, thus reducing operating costs and promoting sustainability.
| The size of the power plant: | 10.8 kWp |
| Storage size: | 22.1 kWh |
| Implementation: | 1 month |
Annual production
12 MWh
Annual savings
85 %
Returns
5 years
Previous project
The following project
Contract process
1.
We find out what you need
We will analyse your consumption and energy efficiency requirements. Based on this, we will design the optimal battery storage solution for you.
2.
Tailor-made offer
We will prepare an individual proposal for you, taking into account your specific needs and budget. The goal is to get the best return on your investment.
3.
Getting a subsidy
We’ll check if you are eligible for available subsidies and make sure you get them. We guarantee the grant or we will pay it for you instead of the state.
4.
Processing of permits
We take care of the complete administration related to permits and legislative requirements. You do not have to deal with complicated official formalities.
5.
Installation and revision
We will provide professional installation and a thorough review of the battery system. We ensure the highest safety and technical standards.
6.
Long-term partner
We offer regular servicing and monitoring for maximum system efficiency. We build long-term cooperation with the goal of your energy success.
You often ask
Battery storage enables more efficient use of energy from PV panels, reduces peak shaving costs, provides a backup source of energy in the event of grid failure and increases energy independence from energy suppliers.
Batteries can supply power at times of high demand, which reduces the maximum draw from the grid and thus the cost of reserved power and peak power charges.
Modern battery storage systems have a lifespan of 15-25 years or more, depending on technology and usage. Maintenance is minimal, involving regular checks and monitoring of the system.
Before installation, we conduct a thorough analysis of your electrical infrastructure and design a solution that integrates seamlessly without the need for major modifications.
Yes, our systems are modular and allow for easy capacity expansion as your energy needs grow.
Yes, the battery system can be set up to charge when electricity prices are low (for example, during nighttime hours or on a low tariff) and then use the stored energy when prices are high. This will optimise your energy costs and achieve significant savings.
No, a battery system can operate on its own without a PV plant. Battery storage can be used to optimize the energy consumption from the grid, for peak shaving or as a backup power source during outages. However, a PV system can further increase efficiency by providing its own renewable energy source.
Let us know,
what you think
We respond by the next day
You have an offer from us within a week
