New Inverter Standards: Pursuant to California Public Utilities Commission (CPUC) Resolutions E-5000 (PDF) and E-5036 (PDF). PG&E will require interconnection applicants to use UL1741 SB Certified inverters and Common Smart Inverter Profile Conformance (CSIP) starting on August 29, 2023.
We strongly recommend that installers and contractors use equipment on the California Energy Commission (CEC) list of accepted equipment. Doing so can save you time during the engineering review process. Only CEC and PG&E approved equipment appears in the drop-down list on our online Interconnection Application. Unlisted equipment requires additional documentation (PDF).
Note: On December 15, 2022, the California Public Utilities Commission (CPUC) issued a decision to modify the state's solar program. The new Solar Billing Plan will be in effect and impact only new solar customers that submit an application after April 14th, 2023.
Here are answers to frequently asked questions (PDF).
Find resources for your interconnection project
We offer resources to help you apply for, install and operate an interconnection project of any size.
Find information on interconnecting a home or business generating system of less than or equal to 30 kilowatts (kW). With our resources, you can explore Interconnections for Standard Net Energy Metering (SNEM) and apply using our online tool. Visit Standard Net Energy Metering (NEM) Interconnections
Find out more about interconnecting larger solar or wind systems to the grid. The information applies to:
- Residential and commercial rate customers installing systems that are more than 30 kW
- Generation for agricultural and demand rate programs of any size
Learn more about larger self-generation programs. Visit Larger Self-Generation Programs.
Apply for Expanded NEM projects that are over 30 kW to 1 MW. Visit Interconnection Application for Non-Export or Certain Net Energy Metered Generating Facilities.
Find out how to sell excess power directly to us or on the open market through our distribution or transmission network. Following are the types of power sales:
- Transmission. Voltage levels generally of 60 kV or higher, governed by the California Independent System Operator (CAISO) Tariff
Apply to sell power to the wholesale market through our distribution system. Visit "Your Projects".
Learn more about exporting power. Visit Export Power.
Learn about the Pre-Application Report and how to obtain certain Distribution System information about your planned interconnection point prior to submitting an Interconnection Application. For more information, download the Pre-Application Report Request guide (PDF).
Find out about unit costs for system upgrades that may be needed for generator interconnection. Example projects are provided to show how these unit costs are applied. For more information, download PG&E's Unit Cost Guide (PDF).
PG&E scheduled joint utilities workshops to discuss updates to the Unit Cost Guide on:
- Pre-Posting Workshop: Thursday, March 7, 2024
- Unit Cost Guide Posting Date: Sunday, March 31, 2024
- Post-Update Workshop: Thursday, April 11, 2024
Find out how PG&E addresses energy storage devices charging from the grid. Since energy storage charges and discharges energy, both aspects need to be addressed for safe and reliable interconnection. For more information, download PG&E's Guide to Energy Storage Charging Issues for Rule 21 Generator Interconnection (PDF).
Standard Single Line Diagrams
PG&E has standard single line diagrams (SLDs) available to help speed you through the application process in many cases. These are provided here for your reference, but if these work for your project, they are also included and available for selection in the application portal during the application process.
The standard SLDs include the following:
- Rule 21 SNEM - SNEM with inverter nameplate rating less than or equal to 30 kVA/kW
This SLD is included in PG&E standard NEM2 (SNEM) Application, found on page 4 of Form 79-1151B-03 (PDF) - Rule 21 SNEM Paired Storage (AC coupled) – AC coupled SNEM Paired Storage Systems with PV inverter nameplate rating less than or equal to 30 kVA/kW and Storage inverter less than or equal to 10 kVA/kW
This SLD is found here (PDF) - Rule 21 SNEM Paired Storage (DC coupled) - DC coupled SNEM Paired Storage Systems with inverter nameplate rating less than or equal to 30 kVA/kW and Storage less than or equal to 10 kVA/kW
This SLD is found here (PDF) - Rule 21 Non-Export – Protection Option 3 – Storage Systems with inverter nameplate rating less than or equal to 10 kVA/kW
This SLD is found here (PDF). - Rule 21 Non-Export – Protection Option 6 – Storage Systems with inverter nameplate rating less than or equal to 10 kVA/kW
This SLD is found here (PDF)
For more information, download the Guidance Language for Notification Only Pilot Program (PDF)
Equal to or less than 30kW:
SNEM: email NEMFollowups@pge.com
SNEM-PS: email SNEMPairedStorage@pge.com
SNEMA and SNEMPS-A: email NEMAProcessing@pge.com
More resources for interconnection
Wholesale electric power procurement
PG&E purchases wholesale electric energy and capacity from generators and suppliers.
Register as a supplier
Register your supplier profile and learn how to become a certified supplier. PG&E buyers can contact you with bid or contract opportunities.
Move, sell and store gas
Find out more about gas transmission and storage in California.