Static vs. Dynamic Load Management in EV Charging

Electric car charging in underground garage home plugged charger station

The number of EVs on the road only continues to grow, therefore, there is a need to better manage the electricity demand they create. 

This has led to the development of two different strategies for managing the load created by EVs: static load management and dynamic load management. 

Let’s compare these two strategies and their pros and cons.

Static Load Management 

Static load management involves the use of fixed charging schedules for EVs. 

With this strategy, EVs are charged at a predetermined time and rate, regardless of the current grid demand or the charging status of other EVs. 

The advantage of this approach is that it is simple and easy to implement. 

EV owners can simply set a charging schedule and forget about it, without having to worry about the grid’s demand or other external factors.

However, static load management has several drawbacks. 

Firstly, it can lead to peak demand periods that can strain the grid. 

If all EVs are charging at the same time, it can lead to a sudden spike in demand that the grid may not be able to handle. This can lead to blackouts, and it can also increase the cost of electricity for everyone.

Additionally, static load management does not take into account the variability of EV charging behaviour, such as the frequency and duration of charging sessions or the battery state of charge.


Dynamic Load Management

Dynamic load management, on the other hand, involves adjusting the charging rate of EVs in real-time based on the current grid demand and the charging status of other EVs. 

This strategy uses smart charging technology to monitor and adjust charging rates to ensure that the grid (or a buildings electrical systems) is not overloaded. This can help to prevent blackouts, and it can also help to lower the cost of electricity.

One of the key advantages of dynamic load management is that it can be used to smooth out peak demand periods. Instead of all EVs charging at the same time, the charging rate can be adjusted based on the buildings building demand. By using this methodology, the upfront cost of upgrading Switch Boards may not be necessary, thus resulting in a reduction of capital expenditure.

If the building is experiencing high demand, the charging rate can be lowered to reduce the load on the Electrical Systems. Conversely, if the grid demand is low, the charging rate can be increased to take advantage of the excess capacity.

Another advantage of dynamic load management is that it can be used to balance the load across multiple EVs. 

If one EV is fully charged and another is still charging, the charging rate of the fully charged EV can be reduced to free up more capacity for the other EV. 

This can help to ensure that all EVs are charged in a timely manner without overloading the grid.

Seth Atkinson from Keith Atkinson Electrical showing a customer how to use an EV charger

For Everything EV Charging, Work with Experts

So the choice between static and dynamic load management will depend on a variety of factors, including the size of the EV fleet, the capacity of the grid, and the cost of electricity.

Lost? Let Keith Atkinson Electrical, the EV charging installation experts, guide you on the best approach.

Because regardless of the approach chosen, it is clear that load management will play an increasingly important role in ensuring the reliable and efficient operation of the electric grid as the number of EVs on the road continues to grow in years to come.

Over to You…

Do you agree with Static vs. Dynamic Load Management in EV Charging? Or is there something missing, or you would like to add?? Would love to hear from you in the comments – any feedback is greatly appreciated.

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