California ISO - Documents By Group

Outcome
The ISO reduced the real-time market transmission constraint relaxation parameter used in the scheduling run from $5000 to $1500 in the market application software. Lowering this parameter reduces the shadow prices of a transmission constraint when the constraint cannot be met at a reasonable cost. The reduction is expected to reduce or control the uplift cost of real-time congestion offset at a reasonable level. — Implemented: May 10, 2013; FERC approval: May 9, 2013; Tariff amendment filing: March 8, 2013 (ER13-1060-000); Board of Governors approval: Dec. 14, 2012