Testing for V2G goes to next level [View all]
Delaware has key role in creating electric vehicles that add power to the grid
UD, NRG Energy create next generation of vehicles while boosting power sources
...
By 2005, Kempton, the director of the University of Delawares Center for Carbon-Free Power Integration, had his idea fully worked out. Two years later he demonstrated it and in 2011 he convinced NRG Energy to back his work.
On Friday, Kempton was joined by state officials and electric utility executives to celebrate the coming-of-age of his concept, one that would use electric car batteries connected to the grid as a piece of the system needed to stabilize energy peaks and valleys that come when wind and solar generators cannot produce on command.
The joint enterprise between the university and NRG known as eV2g was officially christened as viable at the universitys Science Technology & Advanced Research (STAR) campus.
When the car is plugged in, the grid operator, PJM Interconnection, can send a signal for it to either build its charge or discharge power back onto the grid, aiding the grids efforts to maintain a level flow of electricity, he said. A single electric vehicle can send out about 15 kilowatts of electricity for a short period, which is enough to run about 10 homes.
The signal is refreshed in seconds, allowing precise computerized control of the ebb and flow of current to maximize grid balancing. It is all about timing and managing the process to provide the service to the grid operator, while making sure the owner has enough charge the next time he gets in the car, Kempton said.
For Fridays demonstration...
http://www.delawareonline.com/article/20130427/BUSINESS08/304270025/Delaware-has-key-role-creating-electric-vehicles-add-power-grid