tankage

tank·age  (tngkj)

n.

1.

a. The act or process of putting or storing in a tank.

b. The amount that a tank can hold.

c. A fee for tank storage.

2. Animal residues that remain after rendering fat in a slaughterhouse, used for fertilizer or feed.

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Tankage tanks collectively, 1866; a provision or system of storage tanks.

Thesaurus

Noun	1.	tankage - the quantity contained in (or the capacity of) a tank or tanks indefinite quantity - an estimated quantity
	2.	tankage - the charge for storing something in tanks charge - the price charged for some article or service; "the admission charge"
	3.	tankage - the act of storing in tanks storage - the commercial enterprise of storing goods and materials