FERC approves SPP plan to reroute power around grid congestion
FERC accepted Southwest Power Pool's economic topology optimization tariff on August 19, 2026 in docket ER26-2592, letting market participants and SPP propose reconfigurations of the transmission network to relieve congestion, effective October 1, 2026. Commissioner David Rosner's concurrence puts SPP's average congestion costs above $1.6 billion a year; MISO has run a similar process since 2023.
The Duck Curve