### Question
What does energy intensity mean?


### Answer
**Energy intensity** has the following meaning in *42 U.S.C. § 15811*:

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

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

