How a solar power system works
How it works
How do large solar power plants work?
The solar panels on the roof capture sunlight using solar cells and produce direct current (DC). The inverter then converts this DC into alternating current (AC), which can be used for your electrical needs.
The following graphic of a large commercial property explains how the solar system works and shows the placement of the most important elements in the building:
How a solar panel works
Industrial buildings with large flat roofs are ideal for solar panels, allowing optimal tilt and orientation for maximum yield. We analyze your annual consumption and roof area to determine the ideal system size and identify opportunities to align energy-intensive processes with solar production for greater savings.
The goal is to size the system to match your consumption and maximize self-use of solar power, especially during peak production. Since 2026, businesses in Serbia hold "active customer" status, so the plant pays off through the power you use yourself, at the price you would otherwise pay.
In-roof or on-roof
A photovoltaic system lasts 30+ years, so the roof must be in good condition and not require replacement soon. If the roof is over 40 years old, renovation is recommended. When replacing a pitched roof, an integrated PV system reduces roofing costs and offers a cost-efficient way to combine a new roof with solar power.
Storage for higher self-consumption
To maximize savings, increase self-consumption of your solar power. A battery stores excess daytime energy, so you can use it later instead of buying electricity from the grid.
Cost
Increase self-consumption with control
Storage solutions or control systems can increase your self-consumption by up to 80%.
Our Smart Energy control system switches on energy-intensive appliances when solar power is available. This increases self-consumption, thus reducing the electricity you buy from the grid.
Installation of large solar power plants
We work with experienced electricians and roofers. So that you can benefit from your system as quickly as possible, our specialists install it from start to finish. Installation costs are fully included in the purchase price. Plants above 10.8 kW and up to 150 kW need a works approval decision (rešenje o odobrenju za izvođenje radova) under Article 145 of the Law on Planning and Construction. We prepare the documentation for it.
Monitoring your system
FreeState provides continuous system monitoring, fast fault detection and regular inspections to ensure that your solar system operates reliably for more than 30 years.
Get a free, no-obligation quote now!
Configure your own system in minutes with our solar calculator and receive an indicative estimate immediately:
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