CAISO’s Western EIM notched another milestone as it welcomed the country’s largest municipal utility and extended its border to include much of New Mexico.

FERC rejected PG&E’s request to rehear a case where the commission ruled interconnection customers could be harmed by changes occurring outside boundaries.

CAISO’s EIM Governing Body and Regional Issues Forum heard from Modesto Irrigation District, Tacoma Power and Turlock Irrigation District.

The Sacramento Municipal Utility District will join the CAISO EIM and other members of the Balancing Authority of Northern California (BANC) may follow.