That can be consumed: consumable energy.
That may be depleted or worn out by use: consumable paper products.
A consumable good or service: supplies of food, fuel, spare parts, and other consumables.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.