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  5. Show Me the Money! A Field Experiment on Electric Vehicle Charge Timing

American Economic Journal:
Economic Policy

ISSN 1945-7731 (Print) | ISSN 1945-774X (Online)

Show Me the Money! A Field Experiment on Electric Vehicle Charge Timing

  • Megan Bailey
  • David Brown
  • Blake Shaffer
  • Frank Wolak
American Economic Journal: Economic Policy (Forthcoming)

Abstract

We use a field experiment to measure the effectiveness of financial incentives to shift the timing of electric vehicle (EV) charging. EV owners respond strongly to financial incentives, reducing charging during peak hours by 49% by shifting to off-peak hours. In contrast, a pro-social information treatment has no discernible effect. When financial incentives are removed, charge timing reverts to pre-intervention behavior, reinforcing that “money matters”. Our findings highlight the substantial flexibility of EV charging compared to other forms of electricity demand. Such flexibility has the potential to greatly reduce future electric system costs arising from a rapidly decarbonizing transportation sector.

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