Open-TYNDP is an open-source implementation following the ENTSO-E TYNDP 2024 methodology: transparent, reproducible, and built for collaboration. This page explains what it is, how it works, and who it is for.

What Is Open-TYNDP?

Open-TYNDP is an open-source energy system model for the ENTSO-E Ten-Year Network Development Plan (TYNDP), developed by Open Energy Transition (OET) in collaboration with ENTSO-E. It is built on PyPSA-Eur, adapted to the TYNDP 2024 methodology and input data. It focuses on two blocks of TYNDP 2024: Scenario Building and Cost Benefit Analysis.

What Did We Do?

  • Exploratory study in coordination with ENTSO-E, for replicating TYNDP Scenario Building 2024 and Cost Benefit Analysis 2024
  • Soft-forked PyPSA-Eur and adapted its methodology, assumptions, and input data to align with TYNDP 2024
  • Implemented TYNDP-specific scenario logic, demand projections, and network topology
  • Benchmarked model outcomes against ENTSO-E reference data for the National Trends (NT) scenario, using 2009 as the reference climate year

Results

  • Capacity, generation mix, network flows, cross-border flows, and marginal prices can be explored interactively on the Results page
  • Open-TYNDP outcomes are benchmarked against ENTSO-E reference outputs — remaining deviations are documented and traceable to specific modeling choices

Where Can Open-TYNDP Help?

  • Transparency — not only assumption and input are visible and auditable, but also the models.
  • Reproducibility — any stakeholder is able to re-run TYNDP 2024 National Trends scenario independently.
  • Additional resource — allow for broader expert contribution.
  • Automated workflow — The entire modelling process runs automatically, from raw inputs to final outputs

What Can People Do with Open-TYNDP?

  • Independently reproduce and examine official TYNDP 2024 National Trends scenario
  • Test custom scenarios (e.g. alternative demand or RES assumptions) without starting from scratch
  • Directly compare open-source model results for TYNDP 2024 with ENTSO-E outputs in a transparent framework
  • Build on a common, community-maintained European planning model
  • Collaborate across organisations and institutions using a shared, open codebase
  • Benefit from the continuous developments and features of an open-source framework, driven by a broad community of researchers and practitioners

Code & Data Availability