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Plug-In Hybrid Electric Vehicle

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					      Exploring New Technology—
      Plug-In Hybrid Electric Vehicle
      MGE explores and tests various new technologies to       The vehicle can operate in all-electric or all-gasoline
      learn and understand the potential impact to our cus-    mode, or it can operate on both simultaneously.
      tomers and our business. If widely adopted, plug-in
                                                               How PHEVs work
      hybrid electric vehicles (PHEV) using electricity from
      the utility grid could dramatically impact our future.   MGE’s modified Prius uses electricity generated by
      We need to learn more about them.                        power plants to charge a second, bigger battery to
                                                               power the car. The vehicle draws electricity from the
      How hybrid electric vehicles work
                                                               new grid-powered battery first. When this battery is
      A hybrid vehicle uses two or more power sources to       depleted, the original Prius battery kicks in to provide
      propel the vehicle. A standard Prius hybrid electric     power as originally designed by Toyota. When driven
      vehicle (HEV) is powered by a gasoline engine and        at lower speeds, 34 mph or less, this PHEV can travel
      an electric motor. The electricity powering the motor    as far as 30 miles on a single charge without using
      comes from an onboard battery. The battery is charged    gasoline.
      by the engine and by vehicle braking and deceleration.                                   (continued on reverse)



                                    PHEVs                                                      HEVs




   printed on recycled paper

GS1423 07/21/2008


                                                                                            your community energy company
A Prius…plus
MGE’s Toyota Prius has
been modified to run more
on electricity and less on
gasoline. MGE contracted
with A123 Hymotion to add
another, larger battery—one
that is charged with grid
power via an electric cord
plugged into a standard
120-volt outlet. This battery
is installed in the back where
the spare tire typically is stored. While a standard       Potential future benefits
Prius is estimated to achieve 45 miles per gallon (mpg)
                                                           As our utility grid is increasingly powered by renewable
of gasoline, this modified Prius may achieve over
                                                           energy sources, PHEV technology may:
100 mpg.
                                                           • Reduce greenhouse gas and air pollution emissions
We have also installed a fully automated monitoring
                                                           • Reduce reliance on non-renewable fossil fuels
device that will monitor such things as fuel efficiency,
electricity use, engine function and GPS data. This        • Reduce reliance on foreign sources of oil
device will communicate directly with the federal          Other features
Department of Energy Idaho National Laboratory
                                                           • Five hours to fully charge the added battery
and will allow MGE to participate in and learn from
a national study of various PHEV technologies.             • Battery holds about 5 kWh of electricity
                                                           • At today’s prices, costs about $0.65 to fully charge
As with other MGE technology demonstration projects,
                                                             the battery
we will share what we learn from this project on our
Web site. For more information, visit mge.com or           • Standard Prius cost/mile
contact John Coleman at jcoleman@mge.com.                    (at $4.00/gallon)—$ 0.091
                                                           • PHEV cost/mile
                                                             (at $0.13/kWh regular residential rate)—$ 0.021
                                                           • PHEV cost/mile
                                                             (charged at night on Time of Use rate)—$ 0.010

				
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posted:10/16/2011
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