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Plug-In Cars: Enhancing Smart Grid Investment Returns. Steven E. Letendre, PhD Associate Professor Green Mountain College Poultney, VT May 19, 2010 REV DG Conference 2010 Manchester, VT. Coming to a showroom near you…?. What we know?. Plug-in cars dramatically improve fuel economy

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Plug-In Cars: Enhancing Smart Grid Investment Returns

Steven E. Letendre, PhD

Associate Professor

Green Mountain College

Poultney, VT

May 19, 2010

REV DG Conference 2010

Manchester, VT



What we know?

  • Plug-in cars dramatically improve fuel economy

  • Initial vehicle launch (GMC and Nissan) later this year with MSRP well north of $30K.

  • Lithium Ion batteries (Leaf 24 kWh / Volt 16 kWh ).

  • Agreement on plug (SAE J1772) 3-point 400V.

  • There is sufficient off-peak capacity nation-wide to charge a large number of plug-in cars.

  • Electricity is a less expensive fuel for cars than gasoline on a per mile basis.

  • Federal incentives are key driver, up to $7,500 per car.


What we don’t know?

  • How robust will the battery packs be and will they require replacement at some point during the life of the vehicle?

  • Consumer charging preferences?

  • Which companies will dominate the smart charging and vehicle management IT space?

  • How quickly will consumers adopt plug-in cars?

  • What will the fleet of plug-in cars look like 5, 10, 20, 30 years out?





Using Smart Grids to Unlock

V2G Revenue Potential



It’s Happening Now

($120 - $200 / month / vehicle)


V2G Resource in Vermont: Projections

Aggregate Energy Storage Potential of Plug-In Fleet

(MWh)


V2G Resource in Vermont: Projections

Aggregate Power Output Potential of Plug-In Fleet

(MW)



Concluding Thoughts

  • Plug-in cars represent a large new load for households and the power system.

  • Smart grid technology can serve to: manage vehicle charging, unlock V2G revenues, and link RE production with vehicle charging.

  • It may take a decade to see large numbers of plug-in cars in Vermont, but meaningful demonstrations can happen (should happen) much sooner.

  • Smart grid technologies can generate significant value creating a bridge between the electric system and the auto fleet.

[email protected]

Thank You! Please ask questions…


Acknowledgments

Vermont Department of Public Service


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