Senate panel weighs Pathways regional-market plan as supporters tout savings and critics warn of lost state control

California State Senate members and a broad set of energy stakeholders spent several hours debating the Pathways Initiative — a proposal to create a new regional governance structure for Western electricity markets that would put market‑design authority for the Western Energy Imbalance Market (WEIM) and the Extended Day‑Ahead Market (EDAM) under a new regional organization while CAISO would continue to operate balancing‑authority functions.

The hearing, convened by Chair Becker of the Senate Committee on Energy, Utilities and Communications, brought regulators from California and the West, CAISO officials, launch‑committee representatives and a mix of environmental groups, public advocates, labor and local utilities to describe the initiative, its expected benefits and remaining questions. Chair Becker opened the hearing by framing the session as an overview of the Pathways Initiative and asking witnesses to explain how the proposal would affect California reliability, costs and emissions.

Why this matters: Proponents say a larger, coordinated day‑ahead market can lower costs and reduce curtailment of renewable energy by enabling more efficient cross‑border dispatch and better use of transmission. Opponents say the plan risks exposing California to higher emissions and eroding legal protections that ensure state policy goals — including the Renewable Portfolio Standard (RPS) and other environmental statutes — are honored.

The proponents' case - CAISO and state regulators described the history and mechanics of existing Western markets. CAISO officials told the committee that the WEIM has operated for more than a decade and that participants have captured substantial benefits: the WEIM footprint already contains multiple utilities across Western states and "has generated nearly $7,000,000,000 in gross financial benefits for electricity customers," according to testimony. - CAISO and California regulators said Pathways would separate two sets of CAISO responsibilities: (1) balancing‑authority duties (real‑time reliability, transmission operations, interconnection queue and related planning), which CAISO would retain under California governance, and (2) market design and rules for a broader day‑ahead market, which…