Access the latest data about your area

PG&E is proud to be your utility company. As your energy provider, we’re responsible for providing you with safe, reliable power. To measure our reliability, we constantly track and monitor outages across our service area. Then, we calculate our reliability rates based on this data.

 

PG&E Electric Reliability Annual Report and Event

Each year, Pacific Gas and Electric Company (PG&E) compiles a report that reviews its electric reliability status, with both a system-wide and division-level perspective. The report is submitted to the California Public Utilities Commission (CPUC), and is available to the public. The report on 2015 electric reliability was submitted in August 2016. It shows that PG&E achieved record electric reliability for a seventh year.


On Nov. 3, 2016, at the Four Points Sheraton Hotel in Bakersfield, PG&E hosted a public event to discuss details of its electric reliability report. The event was webcasted so those not in attendance could participate remotely.


Here are some helpful links:

 

Understand how we measure reliability

We apply four metrics typically used in the electric utility industry:

  • System Average Interruption Duration Index (SAIDI). This index is based on the amount of time the average PG&E customer experiences a sustained outage (being without power for more than five minutes) in a given year. In 2016, the PG&E SAIDI was about 108.9 minutes per customer.
  • System Average Interruption Frequency Index (SAIFI). This metric represents the number of times the average PG&E customer experiences a sustained outage in a given year. In 2016, the PG&E SAIFI was 1.021, or slightly higher than one per customer.
  • Customer Average Interruption Duration Index (CAIDI). This index represents the average restoration time when customers are impacted by a sustained outage. It is determined by dividing SAIDI by SAIFI. In 2016, the PG&E CAIDI was 106.7.
  • Momentary Average Interruption Frequency Index (MAIFI). This index is based on the number of times the average customer is interrupted by Momentary Outage events each year. Momentary Outage events are outages that last 5 minutes or less. In 2016, the PG&E MAIFI was 1.502 per customer.


Mesure reliability

2012-2016 SAIDI and SAIFI performance results

Along with electric reliability indices such as SAIDI, SAIFI, MAIFI and CAIDI, we track performance from year-to-year.

 

SAIDI performance results

 

SAIDI performance results

 

SAIFI performance results

 

SAIFI performance results

 

2016 outage types

 

outage types

Access our reliability reports

Each year, PG&E submits an Electric System Reliability Report to the California Public Utilities Commission (CPUC). All reports are available on the CPUC website.

 

PG&E service territory

 

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