; (B) a community development financial institution; and (C) an eligible unit of local government. (3) Eligible unit of local government The term eligible unit of local government means any agency or political subdivision of a State. (4) Energy efficiency measures The term energy efficiency measures means, with respect to a property served by or in the service area or jurisdiction, as applicable, of an eligible entity, structural improvements and investments in cost-effective commercial technologies to increase energy efficiency (including cost-effective on- or off-grid renewable energy, energy storage, or demand response systems). (5) Household with a high energy burden (A) In general The term household with a high energy burden means a low-income household the residential energy burden of which exceeds the median energy burden for all low-income households in the State in which the low-income household is located. (B) Calculation The residential energy burden referred to in subparagraph (A) is the quotient obtained by dividing residential energy expenditures by the annual income of the low-income household. (6) Indian tribe The term Indian tribe has the meaning given the term in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 ). (7) Manufactured home The term manufactured home — (A) has the meaning given the term in section 603 of the National Manufactured Housing Construction and Safety Standards Act of 1974 ( 42 U.S.C. 5402 ); and (B) includes a home described in subparagraph (A) without regard to whether the home was built before, on, or after the date on which the construction and safety standards established under section 604 of that Act ( 42 U.S.C. 5403 ) became effective. (8) Program The term program means the program established under subsection (c). (9) Public power group The term public power group means— (A) a public utility; (B) an electric or energy cooperative; (C) a public power district