Synopsis

As grid congestion intensifies across Europe, TSOs are under growing pressure to unlock more capacity for new and existing
connections- especially for large, flexible energy assets like batteries. In this session, TenneT will present its new Time Dependent Transport Rights (TDTR) contract, a breakthrough solution to help manage capacity constraints on the Dutch high voltage grid.
Launched under the National Action Plan on Grid Congestion (LAN) and going live operationally from 1 October 2025, TDTR
introduces a new, flexible access model that allows users to connect to the grid with guaranteed availability for at least 85% of
the year, while accepting partial restrictions during peak grid stress (up to 15% of the time, notified one day in advance). This
approach makes much better use of off-peak hours and introduces significant opportunities for flexible storage operators to
participate in the grid at lower cost.

With 9 GW of available capacity identified for TDTR, this mechanism represents a major step toward relieving grid congestion
and integrating more distributed and renewable assets into the system.

• Why TDTR was developed and how it fits into the Dutch congestion relief strategy
  How the flexible contract structure works in practice
  Insights into off-peak utilization, restriction mechanisms, and grid tariff discounts
  What the 2025 rollout means for battery storage, industrial demand, and flexible generators
  How market parties helped shape the product, and what ongoing stakeholder engagement looks like