From: EurActiv
Published April 29, 2013 06:19 AM

EV's will help balance the electric grid

A technology developed with the University of Delaware has sold power from electric vehicles to the power grid for the first time, the power company NRG Energy Inc said on Friday (26 April).

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In a joint statement, the university and NRG said that they began work on the so-called eV2g program in September 2011 to provide a two-way interface between electric vehicles and the power grid, enabling vehicle-owners to sell electricity back to the grid while they are charging their cars.

NRG said the project became an official participant in the PJM frequency regulation market on February 27. The system, which is still in development, is not yet commercially-available.

PJM operates the power grid for 60 million people in 13 US Mid-Atlantic and Midwest states and the District of Columbia.

Frequency regulation is used to balance supply and demand on the grid second-by-second.

"This demonstrates that (electric vehicles) can provide both mobility and stationary power while helping make the grid more resilient and ultimately generating revenue for electric vehicle owners,"  said NRG Executive Vice President Denise Wilson, who leads the company's emerging businesses.

As well as downloading electricity, electric vehicles can store energy, allowing power grid operators like PJM to balance the power provided by variable renewable resources, such as wind and solar.

Tesla Model S photo via Shutterstock.

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