FNA CZ 2026: Czech grid can handle RES growth, but will require more batteries and new gas capacity

If the ERAA 2025 reference scenario is fulfilled, the Czech Republic should not need to develop flexibility beyond its scope in 2030 and 2035 under the FNA methodology. This is one of the main conclusions of the Assessment of the Flexibility Needs and Potential of the Czech Electricity System through 2035, published by ČEPS. However, the result cannot be interpreted as meaning that the Czech system already has sufficient flexibility today. The modelled scenario itself assumes a major transformation of the generation mix, the deployment of battery storage and greater use of demand-side response.

The FNA study, or Flexibility Needs Assessment, was prepared in line with the European regulation on the internal electricity market and using a methodology approved by the European Union Agency for the Cooperation of Energy Regulators (ACER). The common methodology is intended to enable Member States to assess flexibility needs on a comparable basis. ACER approved the methodology in 2025, and the national assessments are subsequently intended, among other things, to provide a basis for setting indicative national targets for non-fossil flexibility.