Degraded service
Since 21 October 2026, ~13:00 CEST, requests to the Balance Delta High-Res /latest endpoint (and some other Transparency publications) can intermittently fail with 503 or 504 errors. We are working with the data provider on a fix. Please do not retry failed requests immediately: use backoff of at least several seconds and respect the rate limits (HTTP 429). We will update this notice when the issue is resolved.
API for Available Border Capacity.
Volumes settled by TenneT TSO with programme‑responsible parties per time unit.
The Reconciliation Control Data is intended to provide marketparties with the required data to enable them to calculate the Reconciliation Prices themselves.
The reconciliation price is the weighted market price that is used to settle, over a certain period, the difference between the consumption calculated by means of profiles and the actual consumption established. This API is available for both Month, ISP, and MFFBAS information.
Volumes of activated balancing energy, settled reserve and emergency energy.
Metered injections representing the load (consumption) visible through the Transmission network of the Netherlands per market time unit based on measurement messages (Feed in – exports + imports).
Imbalance prices per balancing time unit.
The Merit Order List Incident Reserve for each PTU shows prices and volumes of the bids for incident reserve (mFRRda) which TenneT has received from the providers of regulating and reserve capacity.
Balance Delta High Res data.
The Merit Order List for each PTU shows prices and volumes of the bids for regulating and reserve capacity (aFRR and mFRRsa) which TenneT has received from the providers of regulating and reserve capacity.