What is the purpose of PEV Submetering?
Customers can access PEV Time-Of-Use (TOU) electric rates by either installing separate electrical service and meter dedicated to PEV charging or enrolling their house or facility with a TOU rate. According to a recent survey of participants in the Clean Vehicle Rebate Program, while a majority of drivers (65-80%) know about special rates for PEV charging, only 62% use them. The State of California has set goals to ensure that customers charge their PEVs in a way that minimizes their impact on the grid and maximizes their fuel and cost savings. For the Submetering Pilot, separate PEV or "whole house" Time-Of-Use service is not required to access these rates. Instead, customers will use meters available from third-party electric vehicle service providers (known in the pilot as "Submeter Meter Data Management Agents") to measure their electricity use for utility billing purposes.
What are the benefits?
PG&E, SCE, and SDG&E offer Time-Of-Use (TOU) rates for customers to charge their PEVs that may reduce their monthly travel expenditures. Submetering may provide additional value by avoiding the costs of charging infrastructure and other barriers to the adoption of TOU rates. In addition, encouraging night-time charging helps ensure that there is sufficient electrical grid capacity to meet the needs of all customers while minimizing cost and environmental impact.
The Time-Of-Use rates apply for the following utilities and types of customers: