All relevant mechanisms (day-ahead auction and intraday continuous auction) take the interconnector capacities into account. The dayahead mechanism is describe

All relevant mechanisms (day-ahead auction and intraday continuous auction) take the interconnector capacities into account. The dayahead mechanism is described at length here: https://www.nordpoolgroup.com/globalassets/download-center/single-day-ahead-coupling/euphemia-public-description.pdf https://www.nordpoolgroup.com/globalassets/download-center/s... During the intraday auctions, the left-over capacities are considered live, i.e. if there is 100MW of capacity left for France to Germany, you get the first 100MW of the French orderbook merged into the German one. If a trade happens, this capacity is updated. This is called SIDC (Single Intraday Coupling), https://www.emissions-euets.com/internal-electricity-market-glossary/2033-single-intraday-coupling-sidc?Itemid=118 https://www.emissions-euets.com/internal-electricity-market-..., used to be called XBID.