Low
Counts produced by the California Air Resources Board's EMission FACtors (EMFAC) model for future years based on an estimated regulatory path for meeting California emission rules, not actual sales. It should be noted that in 2030 EMFAC EV counts are higher than the figures based on sales trends in the Medium scenario.
Medium
Projected Future EV sales based on trends from sales data over the previous 6 years
High
Projected Future EV sales based on sales data over the previous 6 years, using an accelerated growth curve