Monitoring of Energy Legislation October 2025

See the most important legal news in the field of energy for the month of October 2025.

RONI is reducing the tariffs for system services (TSS) for OKTE and SEPS, as well as electricity transmission tariffs (particularly for customer groups 2 and 3), and has warned that applicants’ inactivity in meeting the connection requirements is unnecessarily blocking distribution grid capacity. OKTE has launched the 23^rd auction of electricity guarantees of origin. The Ministry of Economy has announced a call for applications to support high-efficiency combined heat and power generation, which should not escape your attention.

The National Council of the Slovak Republic has adopted a resolution highlighting the risks of the planned ETS2 system and calling for its postponement until appropriate compensation mechanisms are in place.

This month, significant changes in energy legislation have entered into force – the major amendment to the energy regulations and the much-debated Act on Targeted Energy Aid.

Read more about these and many other interesting news in our monitoring for the month of October 2025, which you can also download in PDF format.

We wish you a pleasant reading!

1. WHAT HAS CHANGED?

Note: In our monitoring of energy legislation, we monitor for you the changes to the above-mentioned legal regulations, which were published in the Collection of Laws of the Slovak Republic last month. 

2. YOU MIGHT BE INTERESTED

2.1   APPROVED LEGISLATION IN THE ENERGY SECTOR

■      Resolution through which the National Council of the Slovak Republic responds to the risks of the ETS2 system

28 October 2025 – The National Council of the Slovak Republic has approved a draft resolution concerning the extension of the European Union Emissions Trading System (ETS2), which is to cover the buildings and road transport sectors as of 2027. The aim of the proposal is to draw attention to the potential negative social and economic impacts of the new system on Slovak households and small businesses.

The proponents point out that ETS2 will introduce an obligation for fuel suppliers to purchase emission allowances, which may translate into higher prices for energy, fuels, and related goods and services. Estimates indicate that annual household expenses could increase by several thousand euros, with low-income groups expected to be affected the most.

The draft resolution calls on the Government of the Slovak Republic to advocate at the EU level for postponing the entry into force of ETS2 until adequate social and economic compensation mechanisms have been adopted. It also supports initiatives by Member States aimed at introducing price caps and revising Directive (EU) 2023/959, which regulates the system.

ETS2 is intended to be one of the key instruments for reducing emissions in the buildings and transport sectors, yet several EU countries have already stressed the need to ensure that the transition to a low-carbon economy is socially fair and financially sustainable.

The draft resolution and the details of the approval process can be found HERE.

■      Act on Targeted Energy Aid

9 October 2025 – Act No. 260/2025 Coll. on Targeted Energy Assistance has been published in the Collection of Laws.

We informed you about the draft act in the September 2025 edition of the Monitoring.

The Act entered into force on 10 October 2025. The assistance is to be provided from 2026, with the objective of protecting vulnerable households from a sharp increase in energy prices after the end of the crisis regulatory regime. However, as of the date of preparation of this Monitoring, the Ministry of Economy of the Slovak Republic (“MoE SR”) has not yet published further details regarding the assistance.

The published act is available HERE.

■      Major Amendment to Energy Legislation

7 October 2025 – Act No. 259/2025 Coll., amending and supplementing the Act, has been published in the Collection of Laws:

• Act No. 251/2012 Coll. on Energy;
• Act No. 250/2012 Coll. on Regulation in Network Industries;
• Act No. 309/2009 Coll. on the Promotion of Renewable Energy Sources and High-Efficiency Cogeneration;
• Act No. 657/2004 Coll. on Heat Energy;
• Act No. 391/2015 Coll. on Alternative Dispute Resolution for Consumer Disputes and on Amendments to Certain Acts;
• Act No. 51/1988 Coll. on Mining Activities, Explosives, and State Mining Administration;
• Act No. 71/2013 Coll. on the Provision of Subsidies within the Competence of the Ministry of Economy of the Slovak Republic.

We informed you about the Major Amendment to Energy Legislation in the September 2025 Monitoring.

Part of the amendment to the energy legislation entered into force on 1 November 2025, while certain provisions will take effect on 1 January 2026 and 1 September 2026. We recommend preparing for these changes in advance.

The approved text of the amendment is available at this link.

2.2   REGULATORY OFFICE FOR NETWORK INDUSTRIES

■      RONI: Slovak households pay significantly less for electricity than Czech households

5 November 2025 – RONI reports that, according to Eurostat data, Slovak households pay approximately 23.53 PPS per 100 kWh of electricity, while in the Czech Republic the price reaches as much as 39.16 PPS – the highest value in the EU. RONI attributes this difference to Slovakia’s system of central price regulation, which reflects suppliers’ actual costs while protecting consumers from sharp price fluctuations.

More information is available in the article HERE.

■      RONI: Unnecessary delays in connection requests are blocking distribution grid capacity

4 November 2025 – RONI warns that many applicants for connection to the distribution grid unnecessarily postpone fulfilling the technical and commercial requirements, thereby blocking available capacity and slowing down new connections. These findings stem from RONI’s latest analysis. Although distribution companies, according to RONI, generally comply with the statutory five-day deadline for connection once the conditions are met, the process is often prolonged due to the applicants’ inactivity.

RONI therefore stated that it would be appropriate for connection requests to expire after 120 days if the applicant fails to meet the required conditions within that period. The aim is to speed up the connection process and ensure more efficient use of capacities in energy networks.

More information is available in the article HERE.

■      RONI warns about insufficient information on dynamic electricity pricing

30 October 2025 – RONI reports that, based on an analysis of data from 133 electricity suppliers for 2024, only 65 of them published clear information on contracts with hourly (“dynamic”) electricity pricing on their websites. RONI notes that the situation has slightly worsened compared to previous years. Suppliers are legally obliged to conclude such a contract with any customer who requests it and has an installed smart metering system.

RONI emphasises that dynamic pricing means the electricity price changes every hour according to the market, offering potential benefits but also risks for customers who do not have sufficient information. The Office therefore announced that it will strictly monitor suppliers’ compliance with information obligations and, if the situation does not improve, will consider imposing sanctions.

More information is available in the article HERE.

■      RONI significantly reduces TSS tariff rates 

28 October 2025 – RONI has announced a substantial reduction in system services tariffs (TSS), representing the largest correction in this area in recent years. Following the completion of price proceedings concerning SEPS and OKTE, the Office identified room to reduce costs, and consequently tariffs, for several consumer groups.

For large industrial consumers (Group 2 – over 1 GWh annually), tariffs will be reduced by 51,07 %, and for Group 3 (over 100 GWh annually) by 11,41 %.

According to RONI, this measure will bring significant relief to businesses and households, strengthen the competitiveness of Slovak industry, and may have a multiplier effect across the entire economy. The reduction of TSS tariffs will impact a wide range of sectors, from energy-intensive industries to services and the public sector. The Office also announced that it will continue analysing other regulated price components with the aim of further improving market efficiency and stability.

More information is available in the article HERE.

■      RONI: Geopolitics and the EU's green policies will influence energy prices in 2026 

23 October 2025 – RONI announced that it has initiated price proceedings for determining electricity and gas prices for 2026. According to the Office, these proceedings are significantly affected by geopolitical developments, particularly the situation on global gas markets, as well as the European Union’s green policies. Electricity prices are being pushed upward by rising emission allowance prices and investments in modernising distribution networks and connecting renewable energy sources. In the case of gas, more than 60% of the final price is formed by the commodity itself, with the replacement of Russian gas by LNG increasing price sensitivity to global events.

More information is available in the article HERE.

■      RONI reduces transmission system tariffs for 2026 

14 October 2025 – RONI has announced a reduction in electricity transmission tariffs for 2026. The tariff for reserved capacity will decrease by nearly 10% compared to 2025, to a level of EUR 20 078,2070 per MW per year. The tariff for transmitted electricity will drop by more than 4% to EUR 1,8542 per MWh, while the tariff for losses remains almost unchanged at EUR 1,6746 per MWh.

RONI emphasises that this outcome was made possible by rigorous enforcement of regulatory obligations and thorough verification of submitted data, with the goal of reducing costs primarily for industrial enterprises and supporting the competitiveness of the Slovak economy.

More information is available in the article HERE.

2.3   MINISTRY OF ECONOMY OF THE SLOVAK REPUBLIC

■      MoE SR: Slovakia is developing a hydrogen ecosystem - scenarios and forecasts for the coming years approved

5 November 2025 – MoE SR has prepared, and the government has approved, the document “Development of the Hydrogen Ecosystem in Slovakia”, which includes long-term scenarios up to 2050 as well as medium-term planning up to 2030. The plan is available HERE.

The document serves as a verification basis within Slovakia’s Recovery and Resilience Plan (Payment No. 7) under the European REPowerEU programme and is based on an analysis of hydrogen production, consumption, import, and export. It includes the preparation of an Action Plan for 2027–2030 with specific measures to develop hydrogen technologies, with the objective of contributing to Slovakia’s commitments in achieving carbon neutrality.

More information is available HERE.

■      MoE SR announces a call for support of high-efficiency combined heat and power generation 

30 October 2025 – MoE SR has announced a call aimed at increasing the share of electricity produced through high-efficiency combined heat and power generation (CHP) in Slovakia. The selection procedure will run until 31 December 2025, with a total installed capacity of 220 MW available within the call.

The support will take the form of a premium paid for electricity produced in eligible facilities over a 15-year period from the date of commissioning. The call is open to CHP installations with a total installed capacity between 100 kW and 50 MW that meet the conditions specified in the call.

This measure aims to improve energy efficiency and reduce emissions. The call is intended for entities planning to invest in new, modernised, or refurbished high-efficiency CHP facilities.

More information, including the eligibility conditions and application deadlines, is available directly on the MoE SR website.

2.4   MINISTRY OF THE ENVIRONMENT OF THE SLOVAK REPUBLIC

■      MoEN SR launches the second round of industrial modernisation with EUR 150 million

10 October 2025 – MoEN SR announced the launch of the second call worth EUR 150 million from the Modernisation Fund to support the decarbonisation of industrial enterprises. The funding is intended for modern technologies, higher energy efficiency, and reduced costs of emission allowances.

Applicants must be part of the EU ETS system, which covers approximately 90% of industrial emissions. The key criterion will be the lowest possible amount of subsidy per tonne of reduced emissions and the achievement of an absolute CO₂ reduction. Each project must ensure a reduction of at least 10,000 tonnes of CO₂ compared to the reference average of the previous five years (with the option to exclude one outlier year). Only investment costs incurred after the application is submitted will be eligible for funding.

The main goal is to motivate companies to achieve the maximum environmental impact with minimal public expenditure — those achieving the highest emission reduction efficiency at the lowest cost will have the best chance of receiving support.

More information from the MoEN SR is available HERE.

2.5   SHORT-TERM ELECTRICITY MARKET OPERATOR (OKTE)

■      OKTE announces the 23rd electronic auction of guarantees of origin for electricity

23 October 2025 – OKTE announced the 23^rd electronic auction of guarantees of origin for electricity produced from renewable energy sources and high-efficiency combined heat and power (CHP). The auction took place on 6 November 2025 from 9:00 to 13:00.

The guarantees were linked to electricity generated in facilities that, during the relevant production period, received support in the form of a feed-in tariff or premium pursuant to Section 8b(3) of Act No. 309/2009 Coll.

This step confirms the continued interest in green electricity and its certification system on the Slovak market. The regular quarterly auctions of guarantees of origin organised by OKTE have further strengthened the transparency and efficiency of trading in certificates confirming that the corresponding volume of electricity originates from renewable sources.

Detailed information is available on the OKTE website.

■      OKTE: Public consultation on the proposed amendments to the Operating Rules 

14 October 2025 – OKTE announced on its website that on 14 October 2025 it launched a public consultation on the proposed amendments to its Operating Rules.

The changes are based on preparations for the launch of the billing data project and the development of the short-term electricity market. Market participants concerned were able to participate until 28 October 2025.

A total of 22 comments were submitted during the public consultation, of which 8 were accepted.

The version open for comments, as well as further information, is available HERE and HERE.

■      OKTE successfully implements the 15-minute trading interval (15 MTU) in the electricity market 

9 October 2025 – OKTE announced that as of 30 September 2025 (effective from 1 October 2025), it successfully integrated the 15 MTU (15-minute trading interval) project into the SDAC system (Single Day-Ahead Coupling – the common European day-ahead electricity market).

Following deployment, a so-called “rollback” period was conducted to verify whether it would be necessary to revert to the original 60-minute regime – however, all systems operated stably and without the need for any rollback, confirming the readiness of the involved market participants.

This step supports more dynamic market operation, improved alignment of generation and consumption, higher trading efficiency, and a positive impact on the integration of renewable energy sources.

More information is available on the OKTE website.

■      Amendment to OKTE's Operating Rules 

7 October 2025 – OKTE published on its website the Decision of RONI  No. 0016/2025/E-PP of 7 October 2025, available HERE.

The amendment changes the method of calculating and allocating costs for imbalanced electricity deliveries and withdrawals. The new system is designed to be more accurate, fair, and aligned with European rules. Specifically, it modifies:

(i)           the calculation of the payment for the share of balancing energy costs (Section 10A); and

(ii)          the calculation of the imbalance payment (Section 10B).

A transitional period is introduced until 31 October 2025, during which a “softer” calculation will apply — a coefficient is introduced to make the transition gradual. As of 1 November 2025, the system is expected to fully recalculate imbalances under the new rules (without the coefficient).

The European Union (specifically Regulation (EU) 2017/2195) requires that the balancing settlement system be non-discriminatory and equal for all market participants. According to RONI, the previous method of cost allocation was not fully compliant with this regulation. Therefore, RONI (the regulator) instructed OKTE to amend its Operating Rules to ensure full alignment with EU requirements.

OKTE also informed about the new Operating Rules on its official website.

2.6   SLOVAK ELECTRICITY TRANSMISSION SYSTEM (SEPS)

■      SEPS: Medium-term tender for the procurement of ancillary services

30 October 2025 – SEPS announced that on 31 October 2025, the first, second, and third rounds of the medium-term tender for the procurement of ancillary services for the period from 1 January 2026 to 30 June 2026 were published in the Damas Energy information system.

More information is available HERE.

■      SEPS: Reduction of system services (TSS) tariffs for Groups 2 and 3 effective from 1 November 2025 

29 October 2025 – SEPS reports an important change concerning system services tariffs in the electricity sector. RONI issued Decision No. 0333/2025/E on 28 October 2025, based on significant changes in economic parameters. Specifically, it concerned a revision of the planned costs for procuring ancillary services, which necessitated an adjustment of the system services tariffs.

Overview of key tariff changes (in EUR/MWh):

The new tariffs apply to final electricity consumption withdrawn from the grid. The most significant changes affect consumer Groups 2 and 3:

• Group 1 (TSS1): Tariff remains unchanged at EUR 12,4207/MWh.
• Group 2 (TSS2): Tariff decreases by 51,07%, from EUR 9,0282/MWh to EUR 4,4173/MWh.
• Group 3 (TSS3): Tariff decreases by 11,41%, from EUR 1,5128/MWh to EUR 1,3402/MWh.
• Group 4 (TSS4): Tariff remains unchanged at EUR 1,2421/MWh.

These revised tariffs apply to the regulated entity SEPS for the period from 1 November 2025 to 31 December 2025.

The full text of the decision is available HERE, and more information can be found HERE.

■      SEPS: New prices for the provision of ancillary services 

13 October 2025 – SEPS reports that on 9 October 2025, RONI issued Decision No. 0001/2026/E, setting the maximum prices for the provision of ancillary services and the costs of procuring ancillary services for the transmission system operator SEPS for the period from 1 January 2026 to 31 December 2027.

More information about the decision is available HERE.

2.7   OTHERS 

■      SSD: Public consultation on the Distribution System Development Plan

15 October 2025 – SSD launched on 16 October 2025 a public consultation on its Distribution System Development Plan for the years 2026–2030.

The consultation took place from 16 October 2025 to 30 October 2025.

The version open for comments is available HERE. More information is available HERE.

You can download the monitoring for the month of October 2025 in PDF format here.

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Legal notice

The information provided to the subscriber as part of the monitoring of energy legislation is not a source of legally binding legislation, as only the collection of laws of the Slovak Republic contains the legally binding wording of the legislation in terms of the legal code of the Slovak Republic. The information provided to the subscriber is only informative and does not replace legal service pursuant to the Act no. 586/2003 Coll. on advocacy. The law firm POLÁČEK & PARTNERS s.r.o. is not responsible for the completeness and accuracy of the information provided in the energy legislation monitoring. In case of questions regarding the information provided to the subscriber, the subscriber can ask the law firm POLÁČEK & PARTNERS s.r.o. for the provision of legal services for this purpose.