Bold action to upgrade our system

Undergrounding is the process of burying powerlines. PG&E has two programs focused on undergrounding:

  1. Undergrounding as part of our wildfire safety work. This work also includes building stronger overhead equipment. You can learn more about other wildfire safety work when you visit our Community Wildfire Safety Program page.
  2. Rule 20 Program focused on undergrounding powerlines to beautify communities. More information about this program is below.

These efforts make our system safer. Undergrounding reduces ignition risk by nearly 99% in that location.

Expanding our electric system underground will:

  • Help prevent wildfires caused by equipment
  • Reduce safety power outages
  • Improve reliability
  • Decrease the need for future tree work
  • Protect the environment

See our progress

We met our goal to underground at least 175 miles in 2022, more than doubling the mileage we completed in 2021.

Data as of 12/31/2022

PGE Undergrounding progress image

Meeting our state's climate challenges requires bold action. In 2021, we announced plans to underground 10,000 miles of powerlines. This work took place in and near wildfire-risk areas. This is the largest program of its kind in the U.S.



Find more information about undergrounding work plans, including maps, below.

For more information, you can contact us at or 1-877-295-4949.

PG&E also converts many miles of overhead electric facilities to underground annually. This work is completed by following the California Public Utilities Commission (CPUC) Rule 20 guideline that is an electric distribution tariff.

Rule 20 has three sections (A, B and C). The use of a particular Rule 20 section is determined by the type of area to be undergrounded and who pays for the work.

For more information on Rule 20, please see below. To view the current Rule 20 Annual Report (per Ordering Paragraph 14 of D.21-06-013), download the 2021 Rule 20 Annual Report (XLSX, 424 KB).