Amendments to the Act on Renewable Energy Sources since 2022 relevant to biogas and biomethane: an overview of the acts

Since 2022 the Act on Renewable Energy Sources has been amended many times, but for biogas and biomethane three acts from 2023–2025 were the breakthrough: the special act for agricultural biogas plants (13 July 2023), the amendment of 17 August 2023 creating the framework for biomethane, and the amendment of 27 November 2024 changing the fixed-price thresholds. Below we list the changes confirmed in the texts of the acts, as at October 2025.

The most important acts

Outside the list remain acts of a general energy nature (including amendments to the Energy Law from 2023 and 2025 and the act on the energy voucher), whose effect on biogas is limited and requires separate analysis.

What has changed for an agricultural biogas producer

1. The KOWR register also covers biomethane from agricultural biogas and allows applications and reports to be submitted through the IT system.
2. The support catalogue. Certificates of origin for agricultural biogas and auctions for biogas injected into the grid have disappeared. Auctions for electricity and fixed prices and the negative balance for smaller installations remain.
3. Thresholds. The fixed purchase price applies to installations below 200 kW (in 2025 still below 400 kW), and the right to cover the negative balance — from 200 kW to 1 MW.
4. Guarantees of origin for biogas and agricultural biogas transported outside the gas grid.

What has changed for biomethane

• A statutory definition and two registers (URE and KOWR) depending on the feedstock have appeared.
• Support up to 1 MW (converted to electrical capacity) in the form of a fixed price and the right to cover the negative balance for 20 years, with the reference price set by regulation (PLN 545 and PLN 538/MWh in 2023).
• There is no separate mechanism for larger installations — auction support for biomethane has not entered into force.
• Biomethane supported under Chapter 4a is not counted towards the NCW.

How to track the changes

• Check the announcements of the consolidated text — the one current at the date of the entry is Dz.U. 2024, item 1361 with later amendments.
• In the Journal of Laws, search for amending acts by title and ELI number; the Sejm interface (ELI) provides a list of amending acts and the date of entry into force.
• Pay attention to transitional provisions — many changes, for example capacity thresholds, have adjustment periods.

What this means for the investor

1. Investments in agricultural biogas plants benefit from the facilitations of the 2023 special act, but the KOWR register conditions and the definition of agricultural biogas, which was changed in 2025, still apply.
2. Biomethane projects have had a registration framework and guarantees of origin since autumn 2023, and support up to 1 MW in Chapter 4a; larger installations waited for separate provisions.
3. Installations of 200 kW–1 MW should check whether their status with regard to FIT/FIP has changed after 2025.
4. Everyone should verify the wording of the provisions in the current consolidated text, because some changes enter into force in stages (2026–2030).

Control questions before a decision

• Which transitional provisions cover my installation (including capacity thresholds and application deadlines)?
• Does my feedstock fit within the current definition of agricultural biogas?
• Is the register in which I am entered still the correct one after a change of feedstock or an expansion?
• Is my support (FIT, FIP, auction, biomethane) consistent with the thresholds and periods in the consolidated text?

This text is for information only and does not constitute legal advice; before an investment or formal decision, check the current wording of the legislation and consult a lawyer or the relevant authority.