Role of Vehicle-to-grid Systems for Electric Load Shifting and Integration of Intermittent Sources in Latvian Power System

Increasing the proportion of electricity produced by intermittent renewable energy sources raises impact on power systems. The goal of the study was to evaluate the benefits from “vehicle-to-grid” (V2G) systems for integration of intermittent sources using the Latvian power system as the case. The energy system analysis tool “EnergyPLAN” was used for modeling of scenarios. The results show that the V2G system could provide an important benefit for “peak shaving” by supplying up to 700 MW of electric capacity back to grid, which is about 11% of the capacity of all the V2G cars connected to the grid. The potential reduction of CO2 by V2G systems is about 100 kg CO2 per one passenger car.