Reliability

The City of Shasta Lake practices cost-effective management and consistent implementation of reliability investments and initiatives critical to maintaining and/or improving customer satisfaction and system reliability. The City strives to choose the most cost effective discretionary projects/practices with the greatest benefit to cost ratio to improve reliability.

Reliability Projects and Practices:

  • Aggressive tree trimming to minimize tree related outages
  • Installed New SCADA Master w/ alarm notification
  • Mitigate recurring outages by employing such things as squirrel transformer bushing cover-ups
  • Advanced Meter Infrastructures so we are notified of an outage as soon as possible
  • Fusing Distribution tap lines so the protection zones are more localized
  • Install additional line reclosing devices to keep the most customers on when we have an event
  • Implemented a new mobile electronic inspection program to track and triage issues in the electric distribution system.
  • Upgraded critical connections to reliable wedge connectors (Boltless Connectors).
  • Bought and implemented a new fault location mapping program, which enables the Utility to dispatch crews to a more pinpointed area when electrical issues arise.

Shasta Lake Reliability Indices:

CompanySA IDISAIFICAIDIASAIData Source
PG&E (COMPANY WIDE)279.11.05264.8-CPUC REPORT DATED 7/15/2019
PG&E (NORTH VALLEY ONLY) 4199.41.632578.7-CPUC REPORT DATED 7/15/2019
CITY OF SHASTA LAKE (2015)119.70.71168.999.977%2015 CALCULATIONS
(NO WEATHER EXCLUSIONS)
CITY OF SHASTA LAKE (2016)87.60.37234.999.983%2016 CALCULATIONS
(NO WEATHER EXCLUSIONS)
CITY OF SHASTA LAKE (2017)48.60.41117.599.991%2017 CALCULATIONS
(NO WEATHER EXCLUSIONS)
CITY OF SHASTA LAKE (2018)
    22.70.24   95.799.996%Major Event Days (MED) Excluded
CITY OF SHASTA LAKE (2018)
1420.71.241148.499.726%2018 Calculations, Carr Fire Included
CITY OF SHATSA LAKE (2019)
    86.9  1.24    69.899.983%2019 Calculations - New Wildfire Settings







TABLE TERMS

  • SAIDI - This term represents the average number of outage minutes (due to sustained outages) per customer served.
  • SAIFI - This term represents the average number of interruptions (due to sustained outages) per customer served.
  • CAIDI - This term gives the average outage duration that any given customer would experience (restoration time).
  • ASAI - This term is the ratio of the total number of customer hours that service was available to the number of hours in a year.

SAIDI 2019SAIFI 2019

CAIDI 2019