IDC meaning

IDC (Intraday Continuous) describes the rolling, real‑time segment of the electricity intraday market in which orders are matched continuously on a power exchange, allowing generators, suppliers and traders to rebalance physical positions closer to delivery and manage imbalance risk. It is a market/practice term used in exchange rulebooks and industry documentation rather than a standalone statutory definition, though in the EU/SEM it aligns with concepts in the CACM Regulation (Regulation (EU) 2015/1222) and the Single Intraday Coupling (SIDC, formerly XBID). Key features include continuous order matching on a price‑time priority basis, trading up to gate closure set by the relevant TSO/NEMO, and settlement and collateral governed by the exchange’s rules. IDC is distinct from scheduled Intraday Auctions (IDAs). Jurisdictional use: - Ireland and Northern Ireland (I‑SEM): IDC operates under SIDC, enabling cross‑zonal continuous trading alongside IDAs. - Great Britain (England & Wales and Scotland): continuous intraday trading is available within the GB bidding zone on NEMO platforms; cross‑border intraday coupling via SIDC does not apply post‑Brexit, with interconnector capacity allocated under separate arrangements. Legal relevance: commonly referenced in power trading agreements, exchange participation terms, REMIT/EMIR reporting contexts, and imbalance and balancing mechanism strategies.