A group of nonprofits suing BPA said its decision to join SPP’s Markets+ instead of CAISO’s EDAM “violated clear mandates from Congress.”

Trade organizations for utilities and large energy consumers seek to intervene in the lawsuit filed in the 9th Circuit Court of Appeals challenging the Bonneville Power Administration’s decision to join SPP’s Markets+ instead of CAISO’s EDAM.

Following BPA’s pause on certain transmission planning processes, the agency’s customers say it might be time to consider creating a regional transmission organization or imposing stricter requirements to tackle the “exponential growth” of transmission service requests.