ZP(Free) is a new type of Zero Points. You can acquire it from some events or the system. such as Mechsorption Pursuit
Here are the details about the uses of ZP(Free)
1. Buy the favorite items from the ZP Mall. Some special items like treasure packs cannot be purchased by ZP(Free). The purchased items can only be used by you. You cannot trade them.
2. Upgrade the proficiency of weapons, units and skills.
3. Reduce the cooldown time of CAP.
4. Socket the weapons, gear and cores
5. Get a lottery chance at the 2nd socket of core.
6. Repair the destructible constructions during the fleet war.
7. Update the CAP of units.
9. Update the CAP of modules.