### Question
How does the law define qualified fuel cell property expenditure?


### Answer
Under *26 U.S.C. § 25D*, **qualified fuel cell property expenditure** is defined as:

> an expenditure for qualified fuel cell property (as defined in section 48(c)(1)) installed on or in connection with a dwelling unit located in the United States and used as a principal residence (within the meaning of section 121) by the taxpayer

#### Citation:
  - *26 U.S.C. § 25D*
  - Heading: **Subtitle A-Income Taxes > CHAPTER 1-NORMAL TAXES AND SURTAXES > Subchapter A-Determination of Tax Liability > PART IV-CREDITS AGAINST TAX > Subpart A-Nonrefundable Personal Credits**

