"Consumption levels" refers to the amount of goods or services that people or organizations use or consume. It indicates the quantity or rate at which something is being used or utilized. Full definition
They will arrive in the poor regions, but aspire to income and consumption levels of the rest of the world. (scientificamerican.com)
Current specifications set maximum annual energy consumption levels accounting for all operating modes as well as requirements for power management features. (smarterhouse.org)
The question I asked when I first saw the 400 billion barrel figure was «how many years at current consumption levels will this oil last?». (treehugger.com)