System constraints

On this page, you’ll find a map of outturn boundary constraint costs as well as day ahead flows and limits for each of the boundaries.

To give greater insight on balancing decisions, these reports provide outturn system costs across several significant constraint boundaries.

We also provide a snapshot of the limits and flows at these boundaries at day ahead stage. Please note that these flows are a snapshot and will not reflect power flow changes following publication of the report.

Constraint costs and limits

Map of Outturn System Costs

Day Ahead Constraint Limit and Flow