Customer Generation at SDG&E

Customer Generation

Important Generation Interconnection Notices

CAISO Notices:

As a result of the CAISO compliance filing for FERC Order No. 2023, (which filing is pending approval at FERC) the next proposed available cluster application window for interconnection requests to the CAISO Cluster Study Process will be October 1 - October 15, 2026.

SDG&E WDAT Notices

As a result of the CAISO compliance filing for FERC Order No. 2023, (which filing is pending approval at FERC) the next proposed available cluster application window for interconnection requests to the WDAT Cluster Study Process will be October 1 - October 15, 2026. SDG&E will update this notice when the new information is available.

As of August 15, 2024, interconnection requests for the Independent Study Process (ISP) will no longer be accepted.

SDG&E Rule 21 Notices

Overview of Generation Interconnection

Any entity that seeks to interconnect a proposed generating or energy storage facility to SDG&E’s transmission system or distribution system, whether that is a homeowner, the homeowner’s energy contractor, or a third-party developer of generating/storage facilities, is considered an Interconnection Customer (IC) by SDG&E.

IC’s may find the following presentation entitled “Generation 101” helpful

1.24 MB

PDF

Generation 101

Where interconnection requests are made/sent depends on several factors, including the following:

Where is the facility interconnecting?

to SDG&E's Transmission System or
to SDG&E's Distribution System

How does the facility owner/operator expect to be paid for the power/storage it generates?

To SDG&E only via procurement program or Power Purchase Agreement, or
To an independent energy buyer via Power Purchase Agreement, or
To a participant in the California Energy Marketplace administered by the California Independent System Operator (CAISO)

Customer Generation

If the proposed generating/storage facility is interconnecting to SDG&E’s Transmission System – selling to independent energy buyer or CAISO market, interconnection is made directly to CAISO .

If interconnecting to SDG&E’s Distribution System – Selling to SDG&E under a program or PPA

Residential rooftop solar, solar + storage, or stand-alone storage under the Solar Billing Plan program, interconnection is made to SDG&E using the online interconnection portal.
Non-NBT generating/storage facilities (subject to California Rule 21), either exporting or non-exporting projects, interconnection is made to SDG&E using the online interconnection portal.

Solar Installation

Electric pole with wires

If interconnecting to SDG&E’s Distribution System – Selling to independent energy buyer or CAISO market at wholesale (subject to SDG&E’s Wholesale Distribution Access Tariff, or WDAT), interconnection is make to SDG&E using the online interconnection portal.