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​ISO Interconnection request

Resources newly interconnecting to the ISO controlled grid use an Interconnection Request to begin the process.

Interconnection request informational presentations

How and when to apply for interconnection and what to anticipate during the 10 week to 2½ year study process.

Interconnection application - study options  
Learn about available study processes, how to apply for interconnection, and requirements for a valid application. (interconnection request, site exclusivity documents/deposit, study deposit, technical data).

Interconnection timeline and study process 
Find out what to anticipate during the interconnection process, including an overview of timing, what to expect from joint meetings, requirements for posting financial security, and the impacts of a withdrawal on refunds.

Submit an interconnection request

Determine which available study process is appropriate for your interconnecting facility then submit an interconnection request to begin the study.  Interconnection Requests may be submitted electronically, including the interconnection request document below, through the ISO Resource Interconnection Management System (RIMS) application.

Process and requirements

The California ISO operates under the terms and conditions of its FERC-approved tariff. Business practice manuals (BPMs) provide detailed rules, procedures and examples for the administration, operation, planning and accounting requirements of the ISO and the market that are consistent with the ISO tariff. The resources below provide additional information about the ISO interconnection process and procedures.

Forms and resources



After submitting an interconnection request 

Learn about the study process that can require from 10 weeks up to 2 1/2 years to complete.