+385 98 224 344 info@tomido.hr

Photovoltaic systems

for electricity generation


Ready for solar energy


Solar energy is one of the most commonly used renewable energy sources. Keep up with the times, environmentally conscious, with which you can have long term savings.


1. Stand-alone (off-grid) system

They are installed on facilities that do not have the possibility of bringing the classic connection of the electricity network, or such connection is economically unjustified.

The basic system consists of a photovoltaic module, a charge regulator, and a battery. It can provide DC voltages to power some elementary consumers (lighting, small TV, pump, etc.).

By adding a DC/AC inverter to the basic system, it is possible to connect all standard appliances used in the household. Such a system can still be performed via hybrid (combined) devices that mainly combine four functions in one device:

  • inverter – converts DC battery voltage to standard AC voltage
  • charge controller – directs energy from photovoltaic modules to batteries (controls battery charge)
  • battery charger (when the generator-aggregate set is connected) additionally charges the battery in case of bad weather or increased consumption
  • automatic transfer switch – automatically switches the power supply of the consumer from the converter to the generator and vice versa

Due to the trend of constant decline in equipment prices and savings in the space where the system is installed, nowadays systems, with hybrid devices are mostly used, where full functionality and comfort in the use of the facility can be achieved.

Areas of application:

  • isolated houses for permanent or occasional residence, remote villages, and hamlets
  • beach facilities and facilities for food and beverage preparation (beach bars and similar)
  • stands along roads or in parking lots for various purposes
  • meteorological stations, stations for collecting diverse data
  • mountain lodges and hunting lodges
  • telecommunication systems (repeaters, base stations)
  • facilities at sea (signal buoys, lighthouses)
  • facilities related to rural homesteads (barns and other facilities of the homesteads)
  • caravans, mobile homes, glamping tents
  • vessels
  • traffic signals (flashing yellow lights and other)
  • the lighting of billboards along roads
  • road ramps and sliding or swing door opening systems
  • the power supply of alarm and video surveillance systems

The calculation of the necessary equipment for such systems is complex because a significant number of parameters must be taken into account:

  • object position
  • type and position of the roof
  • possible shading of the roof by surrounding obstacles (neighboring buildings, trees, etc.)
  • is it a possibility to use an additional source of electricity (gasoline or diesel generator, auxiliary power supply, wind generator)
  • daily-weekly use (daily, only on weekends, occasionally, only during the day)
  • annual use – year-round for permanent residence, only in summer, only in a particular part of the year
  • which electrical appliances going to be used and for what time of day

We carefully choose the components of the necessary equipment to be harmonized with each other and provide the user with an optimal price-quality ratio.
It is possible to install remote monitoring on larger or more relevant systems (mainly via the GSM network).
Of course, we consider as long as possible the lifespan of the system, as little maintenance as possible, and user-friendly use.

2. On-grid system – power plant

They are installed on facilities that are connected to the electricity network. They are used to meet electricity needs (self-supply systems or self-consumption systems).

How does the system work?

Photovoltaic modules produce electricity of particular technical characteristics, which is converted and synchronized in the inverter with electricity from the EE network.
The solar power plant works in parallel with the EE network.
Consumers in the facility are primarily supplied through the solar power system, and in case of shortage from the EE network is taken only the difference in energy required.
In the period when the solar power plant produces more energy than is needed to supply consumers in the facility, the production difference is delivered to the EE network.
The calculation is performed via a two-way electric meter (separately records consumption and production delivered to the EE network).

The calculation is performed via a two-way electric meter (separately records consumption and production delivered to the EE network).
The installation of a solar power plant significantly reduces the cost of electricity. In the last few years in the Republic of Croatia, state funds (Ministries and the Fund) can be obtained to co-finance the construction of such power plants. For more information, see HERE.

Procedure for building a solar power plant:

  • preparation of project documentation for the solar power plant
  • submission of the Request and the project to the locally competent HEP-ODS d.o.o.
  • after the approved Request, the construction of the solar power plant starts
  • supply and purchase of surplus electricity is contracted with the selected supplier (existing or new one)
  • HEP-ODS d.o.o. issues the Network Use Agreement and the Permanent Operation Permit
  • in the case of the entrepreneurship category, the Measurement of the Quality of Electricity and Trial Work is also performed.


Brends – manufacturers we work with:

Power One


Rules and obligations

Legal obligations of investors:

  • entrust the preparation of the electrical technical design to an authorized designer
  • consign the service of installing solar power plant equipment to a licensed company

As a licensed company with many years of experience in this field, we can offer everything you need to install solar power plants:

  • consulting and necessary calculations
  • preparing an electrotechnical project
  • supply of equipment
  • installing equipment
  • commissioning 
  • system maintenance and monitoring


years of experience


Here you can see examples of photovoltaic systems we have installed.

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