September 2, 2005
Tokyo Electric Power Co.
Fuji Heavy Industries, Ltd.
Tokyo Electric Power Co. (TEPCO) and Fuji Heavy Industries, Ltd. (FHI)
have decided to jointly develop an electric vehicle (EV) that fits for
use as TEPCO's service vehicle. For about one year from September 2,
2005, the two companies will design and build ten prototype vehicles
based on EV "Subaru R1e" that is now under development by FHI, and
verify their performance and economy in real fields by actually using
them for TEPCO's services.
Under the circumstances where the emissions of greenhouse gases such as
CO2 are required to be reduced, CO2 emissions particularly in the
transport sector in fiscal 2003 increased by 19.8% from the fiscal 1990
level. Specific measures to reduce gas emissions are urgently required
in this sector.
On the other hand, TEPCO has declared the target of reduction in fuel
costs of motor vehicles(Note 1) and that of introduction of low-emission
vehicles(Note 2) as its environmental indicators, and is making
company-wide efforts to achieve these targets.
Under such circumstances, TEPCO that has an edge in highly
environment-friendly electric power and FHI that aims to produce and sell
EVs by improving lithium-ion batteries(Note 3) that fit for use aboard
EVs have decided to jointly develop an EV that fits for use as TEPCO's
fleet of service vehicles.
Specifically, with the EV "Subaru R1e" now under development by FHI as
the base vehicle, the two companies will jointly design and build ten
prototypes that meet the specifications of TEPCO's service vehicle, i.e.,
a light vehicle that covers 80 kilometers a day. Then, the prototypes
will be assigned to TEPCO's branch offices, etc. and check their
performance and economy through road tests, etc. in routine services,
and the appropriate quantity of batteries to be carried aboard an EV,
aiming at reducing the weight and price of EV.
Making the effective use of its accumulated electric charging technology,
moreover, TEPCO will also develop a fast charger that can recharge to
about 80% of full charge only for 15 minutes.
TEPCO now has a fleet of about 8,300 service vehicles. Based on the
results of joint development, TEPCO will also verify the possibility of
replacing about 3,000 small service vehicles of under 1,500 cc
displacement and less than 80 kilometers covered a day with EVs in and
after 2007.
If about 3,000 service vehicles are replaced by EVs, CO2 emissions are
expected to be reduced by about 2,800 tons per year(Note 4), and fuel
costs are expected to be reduced by about 190 million yen per year(Note 5).
In promoting wide use of EVs, FHI expects corporate service vehicles to
be a promising market. By precisely grasping the needs for EVs as
services vehicles other than those for TEPCO, FHI will accumulate its
know-how and promote EV sales to corporate customers other than TEPCO,
while promoting widespread use of EVs.
Note 1: Target of reduction in fuel costs of vehicles
As the target of reduction in the amount of resources to be consumed
for TEPCO in fiscal 2005, TEPCO had planned to reduce the fuel costs
of vehicles by 20% over five years from fiscal 2000 (0.112 liter per
kilometer), and a 13% reduction was achieved in fiscal 2004 (0.098
liter per kilometer) from the original target.
Note 2: Target of introduction of low-emission vehicles
TEPCO has set the target of 100% introduction of low-emission vehicles
in fiscal 2010 by introducing low-emission vehicles only (low-emission
vehicles, electric vehicles, hybrid vehicles, etc. certified by the
Ministry of Land, Infrastructure and Transport) at the time of
replacement of vehicles. Actual result achieved in fiscal 2004 stood
at 51% of the target figure.
Note 3: Lithium-ion battery
The lives of lithium-ion batteries are longer than that of other types
of batteries because lithium-ions only move between positive and
negative electrodes during charging and discharging, and electrodes and
electrolyte solution do not make any chemical reaction.
Lithium-ion batteries can store a large amount of energy and can flow
large electric currents as well. Because of these characteristics,
lithium-ion batteries are expected to be promising batteries to be
carried aboard EVs. The drawback of lithium-ion batteries was their
high price. In recent years, however, the use of lithium-ion batteries
has rapidly increased as the power source of mobile phones, notebook
computers, etc. As a result, the prices of small lithium-ion batteries
have been on the decrease.
The lithium-ion battery that TEPCO and FHI plan to use will be supplied
by NEC Lamilion Energy, Ltd. In addition to the safety improved by the
use of manganese in the positive electrode of the battery, its life is
also longer.
Note 4: Reduction in CO2 emissions by 2,800 tons per year on a trial
calculation basis
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Reduction by about 0.945 tons a year per vehicle (Running distance of
10,000 kilometers a year) = (Running distance of 10,000 kilometers a
year / 17.5 kilometers per liter of light vehicle x 2.32 kg-CO2 per
liter of gasoline) - (Running distance of 10,000 kilometers a year /
10 kilometers per kWh of EV x 0.381 kg-CO2 per kWh of electricity)
Reduction in CO2 emissions by about 2,835 tons per year = reduction by
about 0.945 tons a year per vehicle (Running distance of 10,000
kilometers a year) x 3,000 vehicles
Sources:
•17.5 kilometers per liter as the vehicle fuel efficiency of light
vehicle: from the website of the Japan Mini Vehicles Association
•10 kilometers per kWh as the vehicle fuel efficiency of EV: the
target value of this joint development
•2.32 kg-CO2 per liter of gasoline: from the "Guideline for Methods
of Calculation of Greenhouse Gas Emissions from Industry Firms" of the
Global Environment Bureau of the Ministry of the Environment
•0.381 kg-CO2 per kWh of electricity: TEPCO's actual CO2 emission
intensity in fiscal 2004
Note 5: Effect of reduction in fuel costs by about 190 million yen per
year on a trial calculation basis
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Reduction by about 63,000 yen a year per vehicle (Running distance of
10,000 kilometers a year) = (Running distance of 10,000 kilometers a
year / 17.5 kilometers per liter of light vehicle x 128 yen per liter
of gasoline) - (Running distance of 10,000 kilometers a year / 10
kilometers per kWh of EV x 10.07 yen per kWh of electricity)
Reduction in fuel costs by about 189 million yen per year = reduction
by about 63,000 yen a year per vehicle (Running distance of 10,000
kilometers a year) x 3,000 vehicles
Sources:
•Gasoline price of 128 yen per liter: "The Oil Information Center
of the Institute of Energy Economic, Japan" (including the values and
consumption taxes in the Kanto Region under the survey on market
conditions of oil products of service stations) (as of August 10, 2005)
•Electricity rate of 10.08 yen per kWh: the rate prescribed by the
"Rules on Demand and Supply of Electricity" for the light and power
electricity of 6 kV service voltage and contract demand of less than
500 kW for the "period from October 1 to June 30 in the following year"
(excluding demand charges and consumption taxes). |
Attachment
Outline of Joint Development of Service Electric Vehicle for TEPCO |