The two newest standards for electric cars, both approved this month by standards committees of SAE International (formerly the Society of Automotive Engineers), should bring EV drivers great joy, according to Willett Kempton, professor at the University of Delaware’s Center for Transportation Electrification on UD’s Science, Technology and Advanced Research (STAR) Campus.
It marks a win for a long-running UD Research to use electric vehicles to feed electricity into the grid.
Center director Rodney McGee was chairman of the two SAE committees, while postdoctoral researcher Garrett Ejzak, Kempton and administrative assistant Becky Cox played key roles in the engineering, research and policy work undergirding the new EV standards.
“These developments mark a big shift for the EV industry,” said Kempton, who is affiliated with research centers in both the College of Earth, Ocean and Environment and the College of Engineering at UD. “Drivers will gain access to more charging stations and lower-cost charging. They will have new options for using their EV to help fight climate change and even make money when plugged in. These changes are likely to spur even greater adoption of EVs for clean, affordable transportation.”
The so-called “V2G standard” (SAE J3068) provides the missing link for widespread use of vehicle-to-grid (V2G) technology, which Kempton and his colleagues invented at the University of Delaware more than two decades ago.
“We’ve been doing V2G for 20 years here at the University of Delaware, wondering when the rest of the world would catch on,” Kempton said. “One key missing piece has been a complete standard for controlling and managing V2G, which now exists within SAE J3068.”
University of Delaware researchers Willett Kempton (left) and Rodney McGee collaborate on electric vehicle research at the Center for Transportation Electrification on UD’s Science, Technology and Advanced Research (STAR) Campus.
V2G allows you to plug your EV into an electrical outlet and send power from the car battery back to your local energy utility, making a little income while helping the nation’s power grid. This is becoming increasingly more important as more renewable sources of energy come online. When the sun isn’t shining or the wind isn’t blowing, EV owners can plug in and “perform important energy-balancing services,” according to Kempton.
The savings from V2G can add up.
“Our V2G demonstrations show an EV can earn between $100 a year and $1,500 a year. The wide variation is due to different markets and to regulations in different utilities. It also depends on the EV’s capabilities,” Kempton explained.
Current EVs need a substantial update or retrofit to be able to do V2G, while new EVs equipped with the signaling technology are expected to be available by 2025.
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