; or (iii) a local, municipal, or tribal governmental entity. (B) High-cost region The term high-cost region means a region in which the average annual unsubsidized costs of electrical power retail rates or household space heating costs per square foot exceed 150 percent of the national average, as determined by the Secretary. (2) E-prize competition pilot program (A) In general The Secretary shall establish an e-prize competition or challenge pilot program to broadly implement sustainable community and regional energy solutions that seek to reduce energy costs through increased efficiency, conservation, and technology innovation in high-cost regions. (B) Selection In carrying out the pilot program under subparagraph (A), the Secretary shall award a prize purse, in amounts to be determined by the Secretary, to each eligible entity selected through 1 or more of the following competitions or challenges: (i) A point solution competition that rewards and spurs the development of solutions for a particular, well-defined problem. (ii) An exposition competition that helps identify and promote a broad range of ideas and practices that may not otherwise attract attention, facilitating further development of the idea or practice by third parties. (iii) A participation competition that creates value during and after the competition by encouraging contestants to change their behavior or develop new skills that may have beneficial effects during and after the competition. (iv) Such other types of prizes or challenges as the Secretary, in consultation with relevant heads of Federal agencies, considers appropriate to stimulate innovation that has the potential to advance the mission of the applicable Federal agency. (3) Authorization of appropriations There is authorized to be appropriated to carry out this subsection $10,000,000, to remain available until expended. . 4502. Carbon dioxide capture technology prize Section 1008 of the Energy Policy Act of 2005 ( 42 U.S.C. 16396 ) (as amended by section 4501) is amended by adding