Within the context of the Intra-Day Market, participants can submit buy and sell offers on the physical delivery day D. The Intra-Day Market is a useful tool for participants, as they can correct their positions when deviations arise from their Day-Ahead Market offers, mitigating actual production/demand variances when approaching actual delivery time.

The Intra-Day Market also allows the correction of trading positions, as it approaches real-time in the event of changes in demand or power plant outages and the submission of more accurate short-term forecasts for renewables. Volume trades with a physical delivery obligation are auctioned after the Day-Ahead market closes, (D-1 and D), while physical delivery auctions are held on D-day. In the Intraday Market, participation is optional for all participants.