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2008-09 Seminars


Grid Integration of Large Fluctuating Power Generation with Plug-in Vehicles

Willet Kempton
Center for Carbon-free Power Integration Director
University of Delaware

Abstract
Because most carbon-free power is today captured near the surface of the planet, using power conversion devices that lack inherent storage, their electrical power output fluctuates at time scales from seconds to seasons. Where might we find storage to level these fluctuations? As industrialized countries electrify the vehicle fleet, as a byproduct we will create 20 to 50 kWh of load-proximate storage per adult, connected to the grid at 3 - 20 kW, yet tapped for mobility on average only 1 h/d, using on average only 10 kWh/d. The economic, engineering, policy, and grid topology rationales for making this storage available to the electric system are compelling.

This seminar will discuss basic principles and report briefly on the industrial consortium working to implement this technology.