Solving problems in the
Wildland-Urban Interface

Joseph W. Mitchell, Ph.D.
Phone: 858 228 0089

Power Lines and Wildfire

Power Lines and Catastrophic Wild land Fire in Southern California

“Power Lines and Catastrophic Wildland Fire in Southern California” Presentation to the Fire & Materials 2009 Conference, San Francisco CA, Jan 26, 2009


PowerPoint Presentation

When to Turn Off the Power? Cost/Benefit Outline for Proactive De-energization

Filed with the CPUC in response to SDG&E’s 2008 application A.08-12-021 to turn off power under Santa Ana conditions, filed 3/27/2009 on behalf of MGRA. Turning off the power increases other types of risk – including fire risk. Benefits of turning off the power during high-wind conditions have to be weighed against costs & risks, which should result in an optimal shut-off threshold.

MGRA Testimony to the California Public Utilities Commission on San Diego Gas & Electric's Proposed "Sunrise Powerlink" Transmission Line


The analysis for MGRA continues, with powerline contributions from the October 2007 fires, an anomalously high number of power line fires in San Diego County, implications of another 230 kV fire in 2007, and some inconsistent SDG&E wind calculations.

Testimony to the California Public Utilities Commission Regarding the Sunrise Powerlink Project

San Diego Union Tribune Op-Ed: The PUC Should Deny This Plan Outright

SOURCE:  UNION-TRIBUNE:  http://www.utsandiego.com/news/2009/may/10/puc-should-deny-plan-outright/?uniontrib

By:  Diane Conklin and Joseph Mitchell, May 10, 2009

The shut-off plan is widely disliked — not because it can’t work but because it works for SDG&E instead of for its customers.

The September 2009 CPUC Decision on the SDG&E Shut-Off Plan

Proposed decisions were issued in August. Comments and reply comments opposing the shut-off plan were filed on behalf of MGRA. The cost/benefit analysis initially proposed by M-bar Technologies and Consulting, LLC and other issues raised in our filings were cited as a key reasons for the Commission denial of the SDG&E shut-off plan.