6 Factors Affecting EV Fleet Adoption by State


 


Graph showing zero emissions regulations by state.

The regulatory environment is the biggest driver of EV adoption by state, particularly for commercial vehicles. 

Source: Inspiration Mobility, CARB, other entities


In theory, electric vehicle adoption should start with an organization’s goal to reduce its carbon emissions. Yet many exterior factors propel or hinder these goals. 

In conjunction with Automotive Fleet, Inspiration Mobility compiled and analyzed data for six such factors affecting EV adoption by state: regulations, registrations, climate impacts on range, fuel cost savings, incentives, and public charging availability and growth. 

Taken in aggregate, these factors reveal growth patterns and rates of EV adoption. 

Zero Emissions Regulations

Most EVs on the road have been purchased in the ZEV-regulated states such as California, Washington, Oregon, and Colorado. 

These states and others follow the California Air Resources Board (CARB’s) most stringent regulations (High Impact), which involve manufacturer’s sales mandates (ACF) and fleet acquisition mandates (ACT and ACCII). 

States labeled Section 177 (Medium Impact) have adopted some of CARB’s mandates. States having set up task forces — but without mandates — are labeled as Low Impact. 

EV Registrations Per-Capita

Beyond California’s obvious lead in EV registrations per capita, states such as Hawaii and Arizona, which don’t rank high in any of the propelling factors for adoption — are nonetheless in the Top 10 of EV registrations. 


Graph showing EV sales by state.

Source: Inspiration Mobility, U.S. Census, AFDC


Incentives & Rebates

Incentives are available in 24 states to help reduce the upfront cost of purchasing an EV or EV charging infrastructure, and seven additional states have programs that EVs would qualify for when replacing diesel trucks. 

California is the only state offering all four sets of incentives. While every state offers at least one incentive type, only two states — Connecticut and Texas — offer incentives for three.

 


Graph showing EV-related incentives by state.

Source: Inspiration Mobility, AFDC


Climate Impacts to Range

This chart characterizes how temperature patterns impact effective EV range across states, with states given a climate range adjustment based on their average temperatures. 

While impact on range varies by model and use case, EV data analysis shows that fleet vehicles can experience 24% to 42% range loss in freezing temperatures. 


Graph showing temperature impacts by state.

Source: Inspiration Mobility, Geotab, 2021 data; Ref Recurrent, 2024 data


EV Fuel Savings Per Mile Vs. Gas

In this calculation, the highest-ranked states aren’t necessarily the ones with the lowest electricity costs but the ones in which the gulf between gas prices and electricity prices is the greatest. 


Graph showing fuel savings by state.

Source: Inspiration Mobility, AAA, EIA, Bureau of Transportation, EPA


Public Fast Charger Availability by State

While California leads the country with DCFC availability, four Midwest and Mountain West states are among those with the highest number of charging ports per person.

 


Graph showing EV charger growth by state.

Source: Inspiration Mobility, AFDC, U.S. Census




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