The results come from the Domestic Energy Balancing Electric Vehicle Charging Project carried out by CrowdCharge on behalf of the Milton Keynes Council, with Flexitricity as an energy demand response partner.
Vehicle-to-grid chargers route energy between the grid and the user’s home and vehicle, and back again – importing and exporting energy based on real-time demand from the grid. That means vehicles can be instructed to charge automatically when prices and CO2 emissions are low, and send electricity back to the grid for sale when demand is high — all the while providing drivers with enough energy to meet demand.
Trials have shown that when combined with smart charging and battery energy management platforms, a combination of different technologies has the potential to reduce the load on the grid from Electric Vehicle charging.
The project also shows that electric vehicle owners have the potential to save on energy bills. At the end of the trial, for some participants, charging cycles were at least 40 percent cheaper than unmanaged charging.
Participants were able to regularly reduce CO2 emissions during charging by at least 25%. Those with V2G technology are sometimes able to achieve zero-emission charging when 100% renewable energy is available, and discharge when CO2 intensity is high.
This removes the traditional evening peak demand for these V2G users as they use their cars at home during this peak period, reducing the burden on the network.
The project also identified important learning points, including that technologies such as battery storage are currently difficult to integrate into home energy systems; more work is needed to overcome this.
CrowdCharge now offers energy optimization services tested as part of the project and has V2G users on its platform. Electric vehicle drivers using V2G can save real energy bills, especially when combined with home energy production from solar panels.
Mike Potter, CEO of CrowdCharge, said: “We’ve shown that different technologies can help prevent local electricity networks being overloaded, but the key is the intelligent management of such technologies. Successfully integrating these systems can mean that electric vehicle drivers can benefit from greener energy as well as energy cost savings.”
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