Wind energy storage technologies - Wind Power Generation and Wind Turbine Design - page 698

as SEV, however, they have the added feature of being able to supply power back
to the grid. This increases the level of fl exibility within the system once again.
All three types of EVs could be used to improve wind penetrations feasible on a
conventional grid, with each advancement in technology increasing the wind
penetrations feasible from approximately 30-65% [32] (from BEV to V2G).
4.11.3 Cost of EV technology
The costs associated with EVs are different to the costs quoted for other storage
technologies. Consumers are not buying EVs to provide energy storage capacity
for the grid, instead they are buying EVs as a mode of transport. Therefore, it is
diffi cult to compare the costs of EVs under the conventional $/kW and $/kWh
that other storage systems are compared with. As a result, below is a comparison
between the price of EVs and conventional vehicles, as this comparison is more
relevant when considering the uptake of EVs. Figure 21 illustrates the cost of own-
ing a BEV and a conventional EV over a 105,000 km lifetime, with 25% of its life
in urban areas. It is evident from Fig. 21 that BEVs are approximately 20% more
expensive than conventional vehicles: while SEVs and V2G would be even more
expensive, but these are still at the development stage. As SEVs and V2G EVs will
enable signifi cantly larger wind penetrations on the power grid than BEVs [32],
Figure 21: Cost of battery electric vehicles and conventional vehicles for a lifetime
of 105,000 km (25% of which is urban driving) [33].