### Question
What is the definition of primary energy source?


### Answer
The definition of **primary energy source** is as follows in *42 U.S.C. § 8302*:

> the fuel or fuels used by any existing or new electric powerplant, except it does not include, as determined under rules prescribed by the Secretary—


(A) the minimum amounts of fuel required for unit ignition, startup, testing, flame stabilization, and control uses, and


(B) the minimum amounts of fuel required to alleviate or prevent (i) unanticipated equipment outages and (ii) emergencies directly affecting the public health, safety, or welfare which would result from electric power outages

#### Citation:
  - *42 U.S.C. § 8302*
  - Heading: **CHAPTER 92-POWERPLANT AND INDUSTRIAL FUEL USE > SUBCHAPTER I-GENERAL PROVISIONS**

