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.



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