Energy Projection is the ability to generate and project varying waves of energy from a person's body.
Such energy can take the form of concentrated blasts, concussive explosions, waves of force or self-perpetuating beams. The nature of the energy varies from person to person.
While this power is useful in offensive combat, there can be consequences. Energy projection can also be triggered by emotions like anger, sadness, or fear. If you do not have a firm grasp on the power, you can easily trigger it when under pressure and or being driven with hatred and anger. When Vanya first discovered her power, she said that if she thinks too much it doesn't work but if she doesn't think at all her power grows out of hand. You must have a firm grasp of how the power works in order to control it.
One can project and expel energy using different methods. Vanya is able to use this power using sound absorption. Vanya's abilities are reliant on her being in contact with sound, causing her to resonate with sound and energy similarly to a tuning fork. Vanya can manipulate sound to her desire, converting it into energy and physical force that she can utilize in various ways. Vanya can convert it into a bright white energy capable of applying destructive amounts of force, with its lowest intensity being enough to cut through flesh. This energy not only can manifest from Vanya's body, sometimes causing bright light to emanate from her chest, but can be channeled through her violin and bow, as well as through gestures. While battling her siblings in the Icarus Theater, she generated multiple tendrils of energy from her chest to suspend four of her siblings in the air, slowing draining them of life and nearly reducing them to desiccated corpses until her sister Allison fired a gun next to her ear, incapacitating her and returning them to normal. With enough absorbed sound, she generated a powerful beam of light and directed it to the sky where it hit the moon, causing pieces of it to break apart causing the end of the world.
Lila is able to mimic the powers of the Umbrella Academy, at least while in close proximity to them and typically use these powers with great skill. After Vanya used her Energy Projection to knock out the members from Temps Commission, Lila was able to replicate the exact use of that power, using it and controlling it with ease.