### Question
How is the term energy intensity defined?


### Answer
The term **energy intensity** is defined in *42 U.S.C. § 15811* as the following:

> the primary energy consumed for each unit of physical output in an industrial process

#### Citation:
  - *42 U.S.C. § 15811*
  - Heading: **CHAPTER 149-ENERGY POLICY, 2005 > SUBCHAPTER I-ENERGY EFFICIENCY > Part A-Federal Programs**

