Wholesale Distribution Access Tariff (WDAT) Interconnections
What is a WDAT Interconnection?
WDAT applies to all generating/storage facilities interconnecting to SDG&E’s Distribution System and selling at wholesale to the California Marketplace.
For interconnections of generating/storage facilities interconnecting to SDG&E’s Distribution System and selling only to SDG&E under Rule 21, refer to the Rule 21 .
Important WDAT Notices
WDAT Tariff Notices
SDG&E filed a WDAT Tariff Amendment on August 11, 2026 to prepare for Cluster Number 16. SDG&E changed the open/close dates of the Cluster Application Window for the WDAT Cluster Study to September 11 – September 25, 2026. See details below for more information about this filing.
WDAT Cluster Application Window Notices
SDG&E filed on August 11, 2026 to change the open/close dates of the WDAT Cluster Application Window to September 11 – September 25, 2026. The CAISO Cluster Application Window remains October 1 – October 15, 2026.
WDAT Cluster Restudy Notices
Other Notices
WDAT interconnection requests seeking Deliverability are now required to separately submit to CAISO’s Cluster Study Criteria Scoring Process during an open CAISO Cluster Application Window. Application is made to the CAISO at grip-external.caiso.com. See Section 10 of the WDAT GIP for more information.
Rules/Tariff
Wholesale Distribution Access Tariff
2026 Section 205 “clean-up” filing was filed on August 11, 2026 (approval pending) with Effective Date of September 10, 2026.
2026 Compliance Filing for Order 2023 filed January 20, 2026 and effective between August 15, 2024 and September 10, 2026
How do I apply?
Application is made to SDG&E using the online interconnection portal .
WDAT Payment Fees and Deposits
Contact Information
Email: WDATapplications@sdge.com
Customer Generation
San Diego Gas and Electric Company
8316 Century Park Court CP52F
San Diego, CA 92123-1582
Telephone Number: 858-636-5581