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February 22, 2021


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2021 Proposed Participating Transmission Owner Per Unit Cost Guides Posted, Call 3/1/21


The California ISO has scheduled a stakeholder call on March 1, 2021, to review the 2021 proposed Participating Transmission Owner (PTO) Per Unit Cost Guides. The proposed guides are available at


The ISO Generator Interconnection Procedures require PTOs to annually update and publish their per unit costs for use during the current interconnection study cycle for estimating the cost of facilities required to interconnect generation to the ISO grid.


Please submit comments on the proposed guides to by March 15.


The call will be recorded and the video file posted on the initiative webpage for a limited time. The recording is for informational and convenience purposes only, and any related transcriptions should not be reprinted without the ISO’s permission.


Meeting Details

Date: March 1, 2021

Time: 2 p.m. - 4 p.m. Pacific Time

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Participation Information

Step 1: call 888-251-2949, access code: 3421751#

Step 2: join web conference

Technical support: call the AT&T Help Desk at 1-888-796-6118


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California Independent System Operator | P.O. Box 639014 | Folsom, CA 95630 | United States