By Smart Electric Power Alliance (Erika H. Myers, Jacob Hargrave, Richard Farinas), Enel X (Lauren Burke), and The Brattle Group (Ryan Hledik) – November 2019
E4TheFuture funded a report from Smart Electric Power Alliance (SEPA) on residential EV time-varying rates that limit system peaks, which shows how EV-specific rates are more effective than generic utility time-of-use rates. EV time-varying rates effectively incentivize off-peak charging, and customers are interested in using them. Utilities are faced with an urgent need to avoid costly distribution system impacts and infrastructure upgrades; this report will help to inform a smart approach to encourage off-peak residential charging. The report provides empirical evidence on factors that increase enrollment, based on the most comprehensive EV rate surveys to-date of EV customers and utilities.