### Question
How does RENEWABLE ENERGY RESEARCH AND DEVELOPMENT define renewable energy system?


### Answer
Under *7 U.S.C. § 8101*, **renewable energy system** is defined as:

> a system that produces usable energy from a renewable energy source

#### Citation:
  - *7 U.S.C. § 8101*
  - Heading: **CHAPTER 107-RENEWABLE ENERGY RESEARCH AND DEVELOPMENT**

