CA SB886

Requires the California Public Utilities Commission to establish by July 1, 2027 a special tariff for "large load customers" (facilities with peak demand of at least 75 megawatts) connecting to the electrical grid

Mandates that participating large load customers pay all transmission upgrade costs triggered by their interconnection and prevents cost shifts to non-participating ratepayers

Requires participating customers to install onsite zero-carbon energy storage with at least 4 hours of capacity at no less than 50% of forecasted peak demand, dispatchable by the grid operator during emergencies

Imposes an early termination fee on customers who leave the electrical system within 15 years of interconnection or fail to achieve projected load levels

Requires electrical corporations to publish maps showing locations where large load customers can interconnect without significant transmission upgrades, and encourages local publicly owned utilities to develop similar tariffs