Incremental capacity process 2025-2027

Based on NC CAM (Regulation (EU)2017/459) the incremental capacity process has been introduced, an EU-wide harmonized process identify market demand for incremental capacity by Transmission System Operators (TSO’s). An incremental capacity process is initiated at least every two years,  immediately after the auction for annual capacity closes. At the request of market parties, GTS will also include the Surrender of Capacity (SOC) service in the incremental capacity process from 2019 onwards.

1. Indicative demand assessment

This is the non-binding demand assessment phase where market parties can submit their capacity demand to the TSO’s by filling out a demand indication form. In consultation with the neighboring TSO’s, it is decided whether the non-binding demand indication(s) give rise to offering incremental capacity. If so, the next phase of the process will start. In this incremental capacity process this first phase ran from the 8 July 2025 until 1st of September 2025.

2. Design phase

In this phase, technical studies are carried out and a financial assessment is made of the measures to be taken. Together with the other adjacent TSOs, projects are defined for the realization of incremental capacity. After consultation of the market parties the TSO’s will decide upon the final project proposals.

3. Approval of the project proposals

The project proposals will be submitted to the national regulatory authorities for approval.

4. Binding demand assessment

The incremental capacity to be developed is offered at the auction. The results of the auction are input for an economic test. The outcome of the economic test determines the implementation of the proposed projects.

5. Realization of the proposed projects that passed the economic test

Market parties can make their non-binding demand indications known to GTS at any time via the demand indication form below and sending this form to GTS via incremental@gastransport.nl . However, for the incremental capacity process 2025-2027, GTS will only include non-binding demand indications that have been submitted to GTS before the 1st of September 2025.

If you would like to use the Surrender of Capacity service, you will be asked to contact GTS via incremental@gastransport.nl