EV charging technologies can lower costs, assure grid reliability

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Siemens teamed with Duke Energy to demonstrate the results of an 18-month effort to reduce the cost and expand electric vehicle charging technologies.

Council member Siemens provided the first Underwriters Laboratories (UL) approved residential electric vehicle supply equipment (EVSE) to demonstrate the ability to monitor status, report energy use and be controlled locally from the local area network and from the cloud.

Siemens’ EVSE was shown to be accessible by web-connected computers, smart phones and tablets, allowing the EV owner to better monitor the status of the EV charging, schedule future charge events, as well as determine the total kilowatt hours consumed and the cost of charging.

Meanwhile, utilities can take advantage of the technology to offer programs that help manage the time and level of EV charging across the grid to increase grid reliability and efficiency while minimizing peak demand.

Also demonstrated was the ability to monitor and control the EVSE from an OpenADR server. OpenADR is an open standard for Automated Demand Response, allowing utilities to manage grid load resources remotely and automatically. By using OpenADR or by directly accessing the Siemens Cloud, utilities can offer rate programs to EV owners to allow the consumer to charge at highly attractive rates while simultaneously allowing the utility to manage the loads on the grid. By shifting each EV charging event slightly in time, utilities can potentially reduce the peak demand on the grid, which in turn helps to reduce the total amount of generation needed.