California PUC sets out metrics on smart grid performance


Michael R.
Peevey, President,
California PUC
San Francisco, CA, U.S.A. — (METERING.COM) — April 27, 2012  – The California Public Utilities Commission (PUC) has set out 19 metrics to be used by the state’s three IOUs, Pacific Gas and Electric Company, Southern California Edison, and San Diego Gas & Electric, to report on their smart grid deployments, as part of annual reports to be submitted to the PUC.

The metrics are designed to monitor and evaluate the performance of the smart grid and its technologies.

The metrics are:

  • Customer/AMI metrics
    • Number of advanced meter malfunctions where customer electric service is disrupted
    • Load impact from smart grid enabled, utility-administered demand response programs
    • Percentage of demand response enabled by automated and individual demand response programs
    • Number of utility-owned advanced meters supporting consumer devices with home area network (HAN) or comparable consumer energy monitoring or measurement devices registered with the utility
    • Number of customers on a time variant or dynamic pricing tariff
    • Number of escalated customer complaints related to the accuracy, functioning, or installation of advanced meters, or functioning of a utility-administered HAN with registered consumer devices
    • Number of utility-owned advanced meters replaced annually before the end of their expected useful life
    • Number of advanced meter field tests performed at the request of customers pursuant to utility tariffs providing for such field tests
    • Number and percentage of customers with advanced meters using a utility-administered portal to access energy usage information or to enroll in utility energy information programs.
  • Plug-in electric vehicles metrics
    • Number of customers enrolled in time variant electric vehicles tariffs.
  • Storage metrics
    • MW and MWh of grid connected energy storage interconnected at the transmission and distribution system level.
  • Grid operations metrics
    • System-wide and total number of minutes per year of sustained outage per customer served as reflected by the SAIDI
    • How often the system-wide average customer was interrupted in the year as reflected by the SAIFI
    • Number of momentary outages per customer system-wide per year as reflected by the MAIFI
    • Number of customers per year and circuits per year experiencing greater than 12 sustained outages
    • System load factor and load factor by customer class
    • Number of and total nameplate capacity of distributed generation facilities
    • Total annual electricity deliveries from distributed generation facilities
    • Number and percentage of distribution circuits equipped with automation or control equipment, including SCADA systems.

“The metrics will measure the extent and effectiveness of smart grid investments made by utilities and will help ensure that stakeholders are moving in a common policy direction,” said California PUC president Michael R. Peevey.

These metrics will be reviewed and if necessary updated by a new technical working group to be created by the PUC. Other working groups will be established to create metrics related to cybersecurity and environmental benefits, and the creation of broad goals to focus all stakeholders toward a common vision.