A single Potentia can literally fit in the palm of your hand.

"Potentia" is the Lingara name for what the Humans call a "Zero Point Module" or "ZPM" for short. It is a compact powersource that, unlike a reactor or generator, stores energy rather than producing it.

The energy within the Potentia is stored within an artificial dimension so that the containment field can exist solely within the small volume of the Potentia, yet be large enough on the inside to hold a massive amount of energy.

Essentially, it is a reservoir of energy, bigger on the inside than the outside.