ETSO faces the growing demand in Europe for increased transparency on the data that is held and managed by Transmission System Operators (TSOs). An easy access to pan-European information on Power Systems is a key issue in developing a well functioning Internal Electricity Market and TSOs have a major role in delivering such accurate information to all parties at the same time. TSOs remain fully responsible for the data publication.

Answering to the wishes expressed by Market participants, Regulators and other bodies, the following information can be obtained through the ETSO website:

1. Data on the interconnections between countries, including:

• Interconnection capacities at different time frames (seasonal reference values, day-ahead values) and the methodology and assumptions used to compute them (including the Base Case Exchange)
• Allocation mechanisms
• Allocation results
• Scheduled exchanges
• Some measure of the real use of the network at a given moment (TCUs)

2. Data on grid availability, including:

• Planned outages on the network, and influence on capacities
• Information on outages and system disturbances

3. Load data: forecasts, real-time data.

4. Generation data: expected planned outages, Energy stored in hydro reservoirs.