How do I calculate ship supply usage?

[Suicide Junkie]

Additionally, once you have decent sized ships, forget the solar panels, and use emergency resupply pods.
Your resupply ship should hold more supplies than your regular ships, have the pod, and a repair bay. You can then get 2000 supplies per turn.

With the next patch, your resupply podship will have to be of Battleship size or larger, since it will need to carry a SpaceYard, rather than just a repair bay.