User:SOTO/Forum Archive/The Reference Desk/@comment-63.143.235.110-20130510130704/@comment-5338615-20130523135934

To begin with what is currently supplying power to the TARDIS is the Eye of Harmony, supposedly revived during the "regeneration" of it (The End of Time / The eleventh hour). Before the TARDIS got your power supply in the "Energy Chronon" cracks ejected through temporary as Cardiff. Then there is the issue of the engine is the heart of the TARDIS, not the eye. Artron energy addition is not temporary power, but psychic energy, and although sometimes counted been supplied power to the TARDIS, not part of their usual food sources showing that the ship is able to feed on many forms of energy. And last is the Matrix, which is the central computer and the soul of the TARDIS, allowing that actually works.