FERC has again turned down LS Power’s argument for a lower voltage threshold on economic transmission projects in the MISO footprint.

The third time’s a charm for MISO getting FERC approval of its sweeping, cost-allocation overhaul for large economic transmission projects.

The Texas PUC approved a 345-kV transmission project that cuts through an active petroleum field in West Texas’ Permian Basin.

LS Power asked FERC to compel MISO to lower the threshold for competitively bid market efficiency projects from 345 kV to 100 kV.