ON-GRID Photovoltaic Systems – Have the Sun on Your Side

ON-GRID photovoltaic systems are the most widespread solution for households and businesses that want to efficiently use solar energy while remaining connected to the public electrical grid.

What Is an ON-GRID System?

An ON-GRID (grid-tied) photovoltaic system is connected to the distribution grid and generates electricity from solar radiation. The generated energy is primarily consumed within the property, reducing electricity costs. Surplus energy can be fed back into the grid or stored through services such as a virtual battery.

Advantages of ON-GRID Systems

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  Reduction of electricity costs: Direct use of generated energy reduces consumption from the grid.

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  Possibility of selling surplus: Surplus energy can be fed back into the grid or stored through services such as a virtual battery.

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  Simple installation and maintenance: ON-GRID systems are technically less demanding than hybrid or off-grid solutions.

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  Support from state subsidies: In Slovakia, subsidies are available for the installation of ON-GRID systems.

Who Is an ON-GRID System Suitable For?

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  Households: Ideal for family homes with annual consumption up to 3 MWh. Single-phase connection with an output of up to 3.5 kWp is often sufficient.

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  Businesses and larger properties: For higher consumption demands, three-phase connection with an output above 10 kWp is appropriate. Such systems can function as local energy sources.

Technical Requirements

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  Inverters: Should be certified according to STN standards and approved for connection to the Slovak distribution grid.

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  Installation: It is recommended that installation be carried out by qualified professionals with the relevant certificates.

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  Compatibility: The system should be designed with future expansion in mind, for example with battery storage or charging stations for electric vehicles.

Efficient Use of Surplus

Surplus generated energy can be used for:

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  Water heating: Using boilers or heat pumps.

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  Charging electric vehicles: Efficient use of surplus for home charging.

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  Virtual batteries: Storing energy in the distribution grid with the option of later use.