CA SB950

Establishes a 6-member Expert Advisory Committee (replacing the 8-member Independent Consumer Fuels Advisory Committee) to advise the Energy Commission and Division of Petroleum Market Oversight, with all members required to have expertise in economics or business operations of transportation fuels markets and prohibited from petroleum industry employment in the preceding 12 months.

Authorizes the Energy Commission to adopt regulations requiring refiners to maintain minimum inventory levels of refined transportation fuels meeting California specifications, including feedstocks and blending components, with requirements to demonstrate cost-effectiveness and report annually on regulatory effectiveness.

Establishes administrative civil penalties of $100,000 to $1,000,000 per day for refiner noncompliance with turnaround/maintenance and inventory requirements, with procedures for complaints, hearings, and enforcement through the Energy Commission.

Requires refiners seeking to commence turnaround or maintenance events to demonstrate to the executive director that resupply plans are in place to prevent adverse impacts on California's transportation fuels market.

Mandates the Energy Commission's triennial assessment (beginning after January 1, 2025) to evaluate California's petroleum import needs, port infrastructure adequacy, and effects of state regulations on transportation fuel supplies.