Ncdpi gridded response5/20/2023 Despite having relatively modest demand charges of $9.50/kW, Fermata’s software and charger strategically dispatched the Nissan LEAF battery to reduce REC’s headquarters building demand charges by $234 over a two month period. In addition to system-wide savings, V2G chargers can also create savings for non-residential customers that pay demand charges. While some chargers may not have an EV connected during every peak period, utilities will develop experience over time with a minimum fraction of availability across thousands of EVs and two-way charging stations, accessing hundreds of MWh of energy storage on-board local EVs. The value of this single unit hints at the potential for much bigger savings when multiplied by many units, serving multiple EVs or integrated with entire fleets of EVs. The results from this small window suggest savings of over $2,660 a year per two-way charger. Using only one of REC’s Nissan LEAFs, the V2G system has been able to reduce the utility’s load, on average, by 14.14 kW during the entirety of the 85 event hours to date, across a variety of operating conditions.Īs an example, during a window of recent events, the two-way EV charger discharged the EV battery at 14 kW on average, and it saved the cooperative nearly $440. REC schedules dispatch of the on-board battery in response to predicted peaks, which usually lasts two to three hours. After the bidirectional event, the system allows scheduled recharging to be programmed in a way that meets the fleet operator’s needs while providing transparency about the monetary value the vehicle can provide at different times for grid operations.įermata Energy’s FE-15 is capable of providing 15 kilowatts of power both to the car and back to the site served by the grid. The impetus for this decision is knowing how much it would be worth to leave the vehicle plugged-in for grid operations at that time. When the V2G system is responding to system-wide peak demand events, they are scheduled in advance, so a fleet manager can choose to reserve the vehicle for the grid (or the building) at that time as if it were reserved for another driver, while simply leaving the vehicle plugged in. The purpose of this current demonstration has been to illuminate the value potential of V2G for fleet managers, energy professionals and utility companies- and the project is well on its way to accomplishing that goal. The V2G charging technology was thoroughly tested by Underwriters Laboratory to meet the North American standard for bidirectional charging. This charger not only curtails a vehicle’s charging in response to peak system demand, but also, it can discharge the energy stored in a connected EV to meet some of the demand at the site when demand on the grid is high. The two-way “smart” charger provides power to Roanoke Electric’s two EV cars, and it is one of the first chargers delivered from Fermata’s manufacturing site in Danville, Virginia. The cooperative provides electricity and broadband services to a wide variety of industrial, recreational, educational, community and other interests in addition to farms in northeast North Carolina. REC’s headquarters in the rural town of Ahoskie, NC, is the demonstration site for the project, where technicians for the utility’s growing broadband business use the utility’s two Nissan LEAF electric vehicles. The project also benefits from support from partners including Advanced Energy, Clean Energy Works, and Environmental Defense Fund. The NC Clean Energy Technology Center (NCCETC) is coordinating with Roanoke Electric Cooperative (REC) to demonstrate and evaluate the economic case for the use of a two-way charger made by Fermata Energy, maker of the first EV charger certified for the North American standard for bidirectional charging. Preliminary findings from a demonstration of two-way, vehicle-to-grid (V2G) technology in North Carolina show the economic potential for using bidirectional charging technologies to feed energy stored in electric vehicle batteries back to charging sites, especially when the grid is experiencing high demand. Bidirectional capable charging stations can transform electric cars, buses, garbage trucks, fleet vehicles and more into mobile energy storage banks. Electr ic vehicles (EVs) have the potential to be more than just a means of transportation now that more automakers are selling vehicles compatible with vehicle-to-grid technology, like Nissan LEAF, Ford F150 Lightning, and the Thomas Built C2 Jouley school bus.
0 Comments
Leave a Reply. |