How does a BSP in the Netherlands find out the BRP of each connection?
Short answer: For aFRR, and as far as we can see mFRRda, TenneT needs the BRP of every connection in a BSP's pool, before the first registration. For FCR it does not. A BSP cannot look the BRP up on its own. It gets it from a partner supplier or BRP, by mapping each connection's supplier to its BRP (the household can share the supplier through Het Normo since 2026), or by correcting what BRPs flag. For wholesale demand response, the Energiewet also requires an agreement with every BRP involved.
Which products need the BRP per connection?
Product | BRP per connection | Why |
|---|---|---|
| FCR | No | TenneT verifies with allocations, measurements and baselines per unit or group. No imbalance correction for FCR energy |
| aFRR, classic route | Yes | TenneT corrects each BRP's imbalance after activation, using the pool configuration |
| aFRR, Crowd Balancing Platform | Yes | The BRP is given when each grid connection point is registered |
| mFRRda | As far as we can see, yes | TenneT's BRP messages are set up to carry mFRRda as well |
Where it goes in the messages
- Classic aFRR: the BSP sends a pool configuration to TenneT over the MMC-hub. Each connection (EAN18) carries its BRP's EAN13 in the field ResourceProvider, which is mandatory. Watch out: in the messages TenneT sends to the BRP, the same field carries the BSP.
- CBP: each grid connection point is registered with its EAN18 and the BRP's EAN13. The CBP builds the pool configuration every day at 12:00.
If a BRP finds a connection that is not theirs, it contacts the BSP, and the BSP has to get it corrected with TenneT.
Who may look up the BRP?
The connection register records, per allocation point, which BRP is active there. Access is for the parties active on the connection. A BSP has no general right of its own. Whether an aggregator that registers itself as active on an allocation point also receives the BRP through the system processes is not settled yet. The draft data regulation under the Energiewet records the BRP for each allocation point, but the market participants it lets register as active there do not include demand response aggregators or BSPs. Its consultation closed on 4 October 2026, and no date of entry into force is set.
The consent route via Het Normo
Since 1 January 2026, Het Normo is the data exchange entity under the Energiewet. A household can let a service provider retrieve its connection data:
- The service provider registers once in Het Normo's portal with eHerkenning level 3, and sets up the technical connection (OAuth2).
- The household is sent to enKiy, logs in with DigiD, sees who asks for which data, why and for how long, and consents.
- The service provider retrieves the consented data product through the API.
Limits today: one-off data products need fresh consent each time, continuous products are planned, only primary allocation points are supported, and small connections are being added step by step. Check the data product catalogue for what is available now.
No data product in the catalogue carries the BRP. The closest, Contract Einddatum Leverancier, names the connection's supplier and its EAN13, which the BSP then maps to a BRP.
Wholesale demand response needs a contract with every BRP
The Energiewet (article 2.41) says that a market participant that is not also the supplier on an allocation point may only provide demand response there with an agreement with that allocation point's BRP, based on a reasonable offer the BRP must make on request. This does not apply when the market participant provides services to the transmission or distribution system operator for system needs, such as balancing for TenneT.
How Engrate does it
Engrate keeps the BRP per connection right for BSPs: consent at sign-up, a maintained supplier-to-BRP map, and clean handling of BRP corrections. As a registered TenneT IT carrier we send the BSP messages in the BSP's name. More: Energy Market Communication.
Sources
- TenneT, Imbalance adjustment aFRR: Implementation Guide for BSPs and BRPs (MyTenneT)
- TenneT, aFRR NL on CBP: Implementation Guide, April 2026 (MyTenneT)
- TenneT, FCR Manual for BSPs, April 2026
- Energiewet (wetten.overheid.nl, BWBR0050714)
- Het Normo, Data opvragen
- Het Normo, Dataproductencatalogus
- Internetconsultatie, Regeling gegevensuitwisseling Energiewet (consultation version)