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PG&E Announces Major New Electric Infrastructure Safety Initiative to Protect Communities From Wildfire Threat

Undergrounding 10,000 Miles of Power Lines in Highest Fire-Threat Areas

Initiative Builds on Recent Successful Projects Using Undergrounding to Harden the Electric System and Mitigate Wildfire Risk

Pacific Gas and Electric Company (PG&E) today announced a major new initiative to expand the undergrounding of electric distribution power lines in High Fire Threat Districts (HFTD) to further harden its system and help prevent wildfires. The new infrastructure safety initiative, announced today in Butte County by PG&E Corporation CEO Patti Poppe, is a multi-year effort to underground approximately 10,000 miles of power lines.

PG&E’s commitment represents the largest effort in the U.S. to underground power lines as a wildfire risk reduction measure.

“We want what all of our customers want: a safe and resilient energy system. We have taken a stand that catastrophic wildfires shall stop. We will partner with the best and the brightest to bring that stand to life. We will demand excellence of ourselves. We will gladly partner with policymakers and state and local leaders to map a path we can all believe in,” Poppe said.

In addition to significantly reducing wildfire risk, undergrounding also benefits customers by lessening the need for Public Safety Power Shutoffs, which are called as a last resort during dry, windy conditions to reduce the risk of vegetation contacting live power lines and sparking a wildfire. Undergrounding also eases the need for vegetation management efforts, leaving more of California’s trees untouched.

Today, PG&E maintains more than 25,000 miles of overhead distribution power lines in the highest fire-threat areas (Tier 2, Tier 3 and Zone 1)—which is more than 30% of its total distribution overhead system.

10,000 miles of PG&E lines represents approximately the distance of 11 round trips from Chico to Los Angeles or almost half way around the world. The exact number of projects or miles undergrounded each year through PG&E’s new expanded undergrounding program will evolve as PG&E performs further project scoping and inspections, estimating and engineering review.

Public Engagement with Stakeholders to Guide New Undergrounding Plan

PG&E will engage customers and stakeholders as it develops a plan and reviews potential additional undergrounding sites based on a variety of factors, including local municipal planning and safety considerations. Engineering an underground electric system requires designing the system around existing water, natural gas and drainage systems, as well as planning for future road widening. PG&E intends to work closely with customers and local, state, federal, tribal and regulatory officials throughout this new safety initiative.

Learning from Projects to Inform Expanded Undergrounding Effort

In the past, undergrounding has been done on a select, case-by-case basis, and largely for reasons other than wildfire risk reduction. Thanks to breakthroughs PG&E has achieved on undergrounding projects in recent years, undergrounding can now play a much more prominent role in PG&E's ongoing efforts to harden the electric grid.

Following the devastating October 2017 Northern California wildfires and the 2018 Camp Fire, PG&E began to evaluate placing overhead power lines underground as a wildfire safety measure, and to better understand the construction and cost requirements associated with undergrounding for system hardening purposes. These demonstration projects were part of PG&E’s Community Wildfire Safety Program (CWSP) and included the following:

  • From 2018-2020, PG&E completed multiple demonstration projects aimed at converting overhead power lines to underground in high fire-threat areas of Alameda, Contra Costa, Nevada, and Sonoma counties.
  • As a part of the rebuild efforts following the October 2017 Northern California wildfires, PG&E completed undergrounding eight miles of power lines in the Larkfield Estates and Mark West Estates communities in Sonoma County in 2018.
  • In 2019, PG&E announced it would rebuild all its power lines underground in the Town of Paradise as it helps the community recover from the Camp Fire. The company is also rebuilding power lines underground within the 2020 North Complex Fire footprint in Butte County.

Through these demonstration projects and rebuild efforts, PG&E has been able to refine the construction and cost requirements associated with targeted undergrounding, enabling the acceleration and expansion of undergrounding projects. Learnings include:

  • Implementing new planning systems and strategies and using new materials and new equipment to make undergrounding more cost effective.
  • Building strong partnerships with material suppliers and contractors to accelerate undergrounding efforts.
  • Partnering with natural gas projects as well as phone and internet providers to joint trench and share costs, where possible.
  • Using new technology and construction methods to increase trench production.
  • Bundling work into larger blocks to take advantage of economies of scale.
  • Testing new cable and conduit materials to accelerate undergrounding work processes.

Ongoing PG&E Wildfire Mitigation and Resiliency Efforts

In addition to significantly expanding its undergrounding, PG&E’s ongoing safety work to enhance grid resilience and address the growing threat of severe weather and wildfires continues on a risk-based and data-driven basis, as outlined in PG&E's 2021 Wildfire Mitigation Plan (WMP).

This includes:

Learn more about PG&E’s wildfire safety efforts by visiting pge.com/wildfiresafety.

To watch a recording of today’s announcement, visit PG&E’s YouTube channel.

About PG&E

Pacific Gas and Electric Company, a subsidiary of PG&E Corporation (NYSE:PCG), is a combined natural gas and electric utility serving more than 16 million people across 70,000 square miles in Northern and Central California. For more information, visit pge.com and pge.com/news.

Forward-Looking Statements

This news release contains forward-looking statements that are not historical facts, including statements about the beliefs, expectations, estimates, future plans and strategies of PG&E Corporation and PG&E, including but not limited to undergrounding and PG&E’s ongoing wildfire mitigation and safety efforts. These statements are based on current expectations and assumptions, which management believes are reasonable, and on information currently available to management, but are necessarily subject to various risks and uncertainties. In addition to the risk that these assumptions prove to be inaccurate, factors that could cause actual results to differ materially from those contemplated by the forward-looking statements include factors disclosed in PG&E Corporation’s and PG&E’s joint annual report on Form 10-K for the year ended December 31, 2020, their joint quarterly report on Form 10-Q for the quarter ended March 31, 2021, and other reports filed with the SEC, which are available on PG&E Corporation’s website at www.pgecorp.com and on the SEC website at www.sec.gov. PG&E Corporation and the Utility undertake no obligation to publicly update or revise any forward-looking statements, whether due to new information, future events or otherwise, except to the extent required by law.

Contacts

Media Relations

415.973.5930

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