License tax/fee reductions
Generally, states reduce the license fee by a certain amount for electric vehicle owners
in one or several registration periods. For reductions in first time registration fees such
as in D.C., the monetary value of the fee is assumed to be a direct, one-time benefit
to electric vehicle owners. For reductions in recurring registration fees, for example
in Illinois, the value is discounted accordingly. In Arizona the reduction in license tax
for AFVs (including BEVs but not PHEVs) is proportional to the tax for conventional
vehicles; here the benefit is calculated as the difference in the total license tax over
the average length of ownership time (6 years) between a BEV and its counterpart
conventional vehicle.
EVSE financing
Typical costs of chargers are taken as the averages of the ranges given in a study by the
Rocky Mountain Institute (Agenbroad & Holland, 2014). This study includes the cost of
charging station hardware and installation cost, including other materials, labor, mobilization,
and permitting. The average cost of a Level 2 public station is derived from the
average costs of curbside and parking garage single stations. The total installed retail
cost of a Level 2 home charger, a Level 2 public charger, and a DCFC are estimated to be
$1,175, $7,250, and $54,900, respectively. The actual costs of chargers vary depending
on specific charger types and labor cost