RES Legislation

Ignorance of the law is no excuse. The Slovak Republic is a country with strong regulation and this trend is also reflected in the energy sector. If you want to do business in the energy sector, it is essential to be well informed about the current legislation. Getting to know the laws and regulations is crucial and this information will save you not only money but also problems.

SAPI regularly and in detail monitors the Slovak and European legislative environment. Members receive detailed reports on all important changes in EU laws, regulations, ordinances, or directives.

Below you will find some of the most important standards that affect the business of a producer of RES.

A detailed overview of all standards is prepared for members each month.

Amendment to Act no. 309/2018 Coll. on the support of RES has definitively introduced the Institute of Local Source, the concept of which comes from the Slovak Association of Photovoltaic Industry and RES (SAPI). The approved concept brings end consumers the opportunity to install electricity sources without a negative impact on end prices.


The Local Source is a device to produce electricity from RES. For a source to be considered local, it must generate electricity to cover its own consumption of the offtake point, which must be identical to the transfer point. In practice, this means the producer produces electricity for his own consumption and tries to use the maximum amount of energy produced directly at the place where he produces it.

The local power supply must be connected to the system based on a grid contract and its installed power must not exceed 500 kW. At the same time, this installed capacity must not exceed the maximum reserved capacity of the offtake point, which means that the equipment must not produce more capacity than the offtake point is able to consume.

The producer of electricity from the local source has a priority right to the local connection of the local source to the system by the system operator as well as to the free exchange of the meter, which records the amount of electricity taken from the system and the amount of electricity supplied to the system by the system operator. The producer of electricity from a local source waives the right to the purchase price in comparison with other sources and must also ensure that the surplus delivered to the system is accounted for by someone as a deviation.

Return of investment is less than 10 years and using local source means significant cost savings.

 installation is successful if 100% of the energy produced is consumed at the point of consumption and the source regulation ensures zero or almost zero flows to the DS. This eliminates the risk of disconnection by the distribution system. The owner must have a constant overview of the operation and functionality of the local source, even if the local source does not require special interventions, only regular preventive maintenance.

A good example is a photovoltaic system installed on the roof of an industrial hall with a continuous three-shift operation and with installed capacity of 100 kWp. The investment costs, including photovoltaic panels with a supporting structure, current converters, assembly, electrical installation, engineering and connection, amount to approximately 108,000 euros. Annual maintenance costs are about 500 euros. The estimated annual amount of energy saved is 115,000 kWh, which at an average price of 0.12 euros / kWh means 13,800 euros of saved costs. The return on investment is thus estimated at less than 9 years, considering rising electricity prices and less than 7.5 years. The service life of the installation can be calculated at least 30 years. The time of preparation and implementation of such a project should be reduced by implementation by law from 6 to 3 months.

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