Total Output Usable is the national total generation and interconnector capacity that is expected to be available, and is provided by the System Operator.

This data is available over a range of forecast periods:

• NOU2T14D     2-14 days ahead (daily peak half hour MW value)
• NOU2T52W     2-52 weeks ahead (weekly peak half hour MW value)
• NOU2T3YW     2-156 weeks ahead (weekly peak half hour MW value)