Energy Attacks: These attacks are best described as being far more powerful then a Supernova as he can also focus such attacks from thin lasers to wide beams.
Energy Shields: This allows The God Emperor or Mankind to take a lot of punishment.
Golden Light: This light can blind anyone if able and can drive even the likes of Horus to his knees in awe.
Insanity: Anyone looking at The God Emperor of Mankind's face for whatever reason can utterly drive even a mentally-fortified Space Marine into complete insanity. Furthermore, this allows him to be unaffected by the Chaos Deities, last but not least, he stares into the Warp regularly.
Lay on Hands: The God Emperor of Mankind can use this ability to restore people and even machines with just a simple touch of his hands.
Precognition/Clairvoyance: This helped The God Emperor of Mankind to see certain events before they actually happened, which allowed him to become a genius tactician.
Power Granting: The God Emperor of Mankind can grant powers to even a single individual, such as immortality.
Soul Sucking: This allows The God Emperor of Mankind to drain a soul from a single body.
Technopathy: The God Emperor of Mankind can use this ability to manipulate and control all forms of technology. Furthermore, it also allows him complete control over his Terminator Armor.
Time Manipulation: The God Emperor of Mankind has the power to slow time and even make it come to a complete stop. Furthermore, Time itself moves at the extreme speeds to The God Emperor of Mankind's eyes.