Electricity or Lightning (電撃, dengeki)?, usually shortened as "Elec", is one of the elemental affinities in the series. Several spells have since been recurring in many game titles. It is one of the principal elements besides Fire, Ice, Wind/Force, Light, and Darkness. Generally, Electricity is opposed to the element Wind.
In battle, Electricity spells have a special random status effect, called Shock. Enemies afflicted with Shock are usually paralyzed for the duration of their turn, and all Physical attacks against them are automatically Critical hits.
Zio is the recurring electricity-elemental spell. Rarely, the spell causes an electric shock effect, which immobilizes the target for a turn and inflicts critical effect with physical hit if the target has no physical immunity. In Persona 2, Mazio- spells were omitted. In Soul Hackers, "Maha" Electric Skills don't hit all the characters/demons, they hit the targeting one with the most damage and "splash" off to the surrounding characters, doing some damage and a chance of shocking them.
For reference: -dyne spells have 200 power and cost 10, ma-dyne spells have 160 power and cost 30. The shot and spray skills are from guns and therefore have a power boost from the gun's natural power.
Several spells referenced real world elements. Narukami is the god of thunder in Shintoism as is Jupiter in Roman mythology, while Mount Meru is a sacred mountain in Hindu and Buddhist mythology considered to be the center of the universe.