Great Britain (GB) bidding zone
Great Britain left the EU internal energy market in January 2021 and is no longer part of SDAC day-ahead coupling; interconnector capacity is allocated through separate arrangements rather than implicitly. GB is the only zone in this registry clearing in GBP, and it settles in half-hourly periods rather than hourly ones.
Reference data
- Zone code
- GB
- Name
- Great Britain
- Country
- GB
- Region
- Great Britain
- ENTSO-E EIC
- 10YGB----------A
- Delivery-day timezone
- Europe/London
- Clearing currency
- GBP
The EIC is the in_Domain / out_Domain value for ENTSO-E Transparency Platform queries against this zone. Verify it against the ENTSO-E EIC registry before relying on it: several countries publish aliased bidding-zone, control-area and market-balance-area domains, and the correct one depends on what is being asked for.
What an analyst watches here
GB is the exception on almost every axis — currency, settlement resolution, coupling and data source. It has no Nord Pool aggregated bid curve, and its fundamentals come from Elexon BMRS rather than ENTSO-E, so anything comparing GB against a Continental zone is comparing across two different collection paths.
Coverage
- Day-ahead prices
- Collected
- Bid curves
- Not published — this zone is not in a Nord Pool bid-curve cluster
- Continuous intraday
- EPEX SIDC, 30-minute resolution
Neighbours are day-ahead coupling topology only — no capacity and no direction. They are what the reconstruction uses to derive a coupling reference price for modelled net imports, and they are not a substitute for allocated cross-zonal capacity, which is not yet ingested.