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:
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:
Learn more about distribution. Visit PG&E distributions qualifications.
Apply to sell power to the wholesale market through our distribution system. Visit Customer Connections Online
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, 126 KB).
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, 315 KB).
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, 657 KB).
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:
If you have complaints about your interconnection project and are unable to resolve it with your Interconnection Manager, you can reach out to PG&E's appointed Rule 21 Ombudsman, Michael Mulvey at 916-203-6459 or via email at Rule21Ombudsman@pge.com.
To understand interconnection rules and guidelines, view the PG&E’s Rule 21 Tariff (PDF, 19.4 MB).