It is already difficult to provide an energetic presentation during a in-person presentation when you are on stage and you have your audience in front of you. However, you may find that it is even more difficult to do this during a virtual presentation when you have your audience behind their laptops / in front of their computer screens.
If you are all in the same room the energy that you send out from stage is easier to be transferred from one person to the next as they are sitting next to each other. This is not the case in a virtual setting. To accomplish the same effect, you may need to exaggerate and transfer more energy to have the same desired effect.