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Alternative
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Electric Vehicles
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Vehicle Availability | Recharging
Stations | Additional
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| Hybrid Electric Vehicles
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Electric vehicles (EVs) operate
by way of an electric motor, powered by a series of rechargeable batteries.
The batteries are
charged by connecting the vehicle to an electric power source, with many EVs gaining
some additional energy stores through regenerative braking. The range
of an electric vehicle is limited, generally between 35 and 80 miles,
depending on the batteries used, the number of batteries, vehicle
weight, weather and driving conditions. This makes EVs most suited to
short-distance trips involving many starts and stops, such as airport
applications, delivery vehicles, transit and personal use. Electric
vehicles can be designed with the comparable speed and power of
conventional vehicles.
While electricity is
suitable to power a wide range of vehicle types, few battery
electric vehicles are available. The major automobile manufacturers
have ceased development and production of electric passenger
vehicles in favor of hybrid electric
vehicles and
hydrogen/fuel cell technologies.
Available vehicles include some buses and neighborhood electric vehicles
(NEVs). Used
electric vehicles may be available. Conversion of a vehicle is possible, though the extensive
modification and costs can be prohibitive.
Environmental & health benefits: Electric
vehicles are zero-emission vehicles in terms of tailpipe emissions. Concerns have been raised regarding the emissions
associated with the generation of electricity, particularly from coal-fired power plants.
While it is appropriate to consider such life-cycle factors when discussing the
environmental and health benefits of electric vehicles, it is important that these factors
be compared to the life-cycle emissions and environmental consequences of petroleum
extraction, production and distribution. Studies have concluded that
recharging electric vehicles using coal-fired power plants would still
produce 17 to 22 percent fewer carbon dioxide emissions than gasoline
powered cars and the recharging of vehicles using natural gas powered plants
would produce 48 to 52 percent fewer carbon dioxide emissions. The disposal of electric vehicle batteries has
raised concerns regarding the potential for contamination. Advancements
in battery technology and battery recycling are reducing problems
associated with vehicle batteries.
Safety characteristics: The primary safety concerns relate to the handling of
vehicle batteries during recharging and disposal, as there is the potential for electric
shock, as well as contamination and chemical burns from batteries using liquid acid.
All high-voltage circuits are marked with warnings to prevent safety
concerns.
Economics: Electric vehicles are
significantly more expensive than gasoline vehicles. The cost of the vehicle varies depending on the size of the
vehicle and the battery
technology selected. NEV prices generally range
from $6,000 to $15,000. Light-duty vehicles been priced at $15,000 to
$40,000.
Heavy-duty electric vehicles vary in cost depending on the type of
vehicle. Federal
tax incentives for electric vehicles and recharging facilities
help to defray some costs.
Neighborhood Electric Vehicles (NEVs):
Neighborhood electric vehicles
(NEVs) are defined as four-wheeled electric
vehicles having a maximum speed of
25 mph. The vehicles typically obtain a 30 mile range per charge. NEVs are perfect for
short-trip neighborhood operation. The largest source
of gasoline vehicle emissions occurs during short-trip operation. As
electric vehicles, NEVs have zero emissions and thus have the potential to
provide significant air quality benefits. The benefits also include lower
cost (average of $6,000 to $12,000), reduced noise in communities, reduced
parking pressures (2 or 3 vehicles can fit in a conventional parking space), and
low cost to operate and maintain. Several vehicle styles are available,
including 2 and 4 passenger models and vehicles with utility,
truck-style beds. Effective August 1, 2003, NEVs can be licensed for on-road use in Washington State.
Plug-in
Hybrid Electric Vehicles (PHEVs):
In brief, plug-in
hybrid electric vehicles (PHEVs) extend the electric capabilities of
an HEV so that it can travel some distance solely using battery power.
The vehicles have larger battery packs than current HEVs and the
batteries can be plugged into a standard outlet for recharging. When
the batteries are sufficiently depleted, the vehicle relies on the
internal combustion engine. To date, PHEVs have not been commercially
produced by original equipment manufacturers (OEMs) but conversions of
HEVs have been completed by other groups (See CalCars).
PHEVs are often described in terms of the range on which they can
travel solely on electric power - common ranges are 20-60 miles.
Depending on driving patterns, these vehicles would have substantial
improvements in fuel economy over conventional or even hybrid
vehicles. For a lot of information on PHEVs and the national campaign
to convince OEMs to produce these vehicles, visit the Plug-in
Partners Campaign website.
Puget Sound Clean Cities
Coalition strategies: Growth of the electric vehicle market has been inhibited as the major automobile manufacturers have cancelled their light-duty electric vehicle
programs and the limited number of medium- and heavy-duty options available.
Current market development is in the area of NEVs and other small electric vehicles, such as the Tango and the Sparrow, and in vehicle conversions. These vehicles provide a viable and desired option in many applications.
The following strategies will guide the work of the Coalition in this area:
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Focus on deployment of
NEVs, particularly in niche applications.
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Provide education via website and vehicle displays.
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For NEVs, coordinate with manufacturers to find dealers and partner with dealers on education.
Additional
Resources:
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The US
Department of Energy provides additional information on
electric vehicles.
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Electric
Drive Transportation Association (EDTA) is the industry association
working to advance electric vehicle transportation technologies and supporting
infrastructure through policy, information and market development initiatives.
The website includes detailed information on existing and future electric
vehicle technologies.
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Electric
Auto Association (EAA) was formed in 1967 in San Jose, California. The
EAA is a non-profit educational organization that promotes the advancement and
widespread adoption of Electric Vehicles.
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Seattle
Electric Vehicle Association (SEVA)
A chapter of the EAA, the Seattle
Electric Vehicle Association works to help and aid in the education of the
general public as to the desirability and availability of electric
transportation in all its forms, from commercially available cars and trucks,
to conversions, to Neighborhood Electric Vehicles, to electric boats,
bicycles, and motor bikes.
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Citizens
for Rideable Communities is a group that encourages
alternative forms of transportation.
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Plug-in
Partners and CalCars are
two of the main groups promoting PHEVs and have much information
on their websites.
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Advanced
Transportation Technology Institute is a nonprofit
organization working to advance clean transportation technologies
that promote a healthy environment and energy independence. ATTI
supports the manufacture and development of electric, hybrid and
other alternative-fuel vehicles through research, education and
technology transfer.
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Custom
Fuel Comparison Tools The Department of Energy provides a
variety of tools that allow users to select fuels and compare their
properties side-by-side.
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