furnish, equip, provide, satisfy
satisfy
supply I guess
The word that means ready when needed is "prepared."
Resupply.
Quantified Effort
Demand means what is needed or wanted. If you meet that, you produce or supply as much as is needed or wanted.
provide
Required.
This might be the word "extra." If you have a supply of something, often that means you have extra.
The word "resource" can function as both a noun and a verb. As a noun, it refers to a supply or reserve that can be drawn upon when needed. As a verb, it means to provide with resources or to allocate resources.
dispense in- means not able- means capable dispense- means supply or distribute The entire word means not able to distribute
One option is the word provide.