; or (B) aggregations of multiple systems. (2) Eligibility Entities eligible to receive a grant under paragraph (1) include— (A) a State, territory, or possession of the United States; (B) a State energy office; (C) a tribal organization (as defined in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 )); (D) an institution of higher education (as defined in section 101 of the Higher Education Act of 1965 ( 20 U.S.C. 1001 )); and (E) an electric utility, including— (i) a rural electric cooperative; (ii) a municipally owned electric utility; and (iii) an investor-owned utility. (3) Selection requirements In selecting eligible entities to receive a grant under this section, the Secretary shall, to the maximum extent practicable— (A) ensure regional diversity among eligible entities that receive the grants, including participation by rural States and small States; (B) ensure that specific projects selected for grants— (i) expand on the existing technology demonstration and deployment programs of the Department of Energy; and (ii) are designed to achieve one or more of the objectives described in paragraph (4)