The ISO Generator Interconnection Procedures (ISO Tariff DD Appendix 5) requires participating transmission owners to annually update and publish per unit costs for use during the current interconnection study cycle for estimating the cost of facilities required to interconnect generation. Per unit costs are used to develop the cost for reliability and delivery network upgrades and participating transmission owner’s interconnection facilities. The ISO annually publishes draft per unit costs to its website, holds a stakeholder meeting and allows stakeholders to comment on the draft costs. The ISO publishes the final costs in the March to April time frame. The schedule for this annual process is located in Appendix 5 of the interconnection procedures.
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Apr 01, 2022 Final per unit cost guides posted
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Completed |
Final cost guides |
DCRT 2022 Final Per Unit Cost Guide 03/31/2022
DSL 2022 Final Per Unit Cost Guide 03/31/2022
GLW 2022 Final Per Unit Cost Guide 03/31/2022
PG&E 2022 Final Per Unit Cost Guide 03/31/2022
SCE 2022 Final Per Unit Cost Guide 03/31/2022
SDGE 2022 Final Per Unit Cost Guide 03/31/2022
VEA 2022 Final Per Unit Cost Guide 03/31/2022
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Web meeting |
Video - 2022 Participating Transmission Owner Per Unit Cost Guides - Mar 1, 2022 03/04/2022
Presentation - Participating Transmission Owner Per Unit Costs - 2022 - Mar 1, 2022 02/28/2022
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Draft cost guides |
DCRT 2022 Draft Per Unit Cost Guide 02/08/2022
DSL 2022 Draft Per Unit Cost Guide 02/08/2022
GLW 2022 Draft Per Unit Cost Guide 02/22/2022
PG&E 2022 Draft Per Unit Cost Guide 02/08/2022
SCE 2022 Draft Per Unit Cost Guide 02/09/2022
SDG&E 2022 Draft Per Unit Cost Guide 02/08/2022
VEA 2022 Draft Per Unit Cost Guide 02/09/2022
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