; (2) to study consumer behavior in response to implemented granular retail electricity pricing; or (3) to educate and engage consumers regarding rate design innovation, including by providing technical assistance and opportunities for comment. (e) Authorization of appropriations There is authorized to be appropriated to carry out this section $50,000,000, to remain available for a period of 10 years following the fiscal year for which the amounts were appropriated. 7. Federal matching fund for smart grid investment costs (a) Purpose The purpose of this section is to support the continued deployment of advanced metering infrastructure and other technologies. (b) Improvements to Federal matching fund Section 1306 of the Energy Independence and Security Act of 2007 ( 42 U.S.C. 17386 ) is amended— (1) in subsection (e)(1)— (A) in the matter preceding subparagraph (A), by striking within 60 days after the enactment of the American Recovery and Reinvestment Act of 2009 and inserting not later than 60 days after the date of enactment of the DEMO Act ; (B) in subparagraph (D), by striking and at the end; (C) in subparagraph (E), by striking the period at the end and inserting ; and ; and (D) by adding at the end the following: (F) require as a condition of receiving funding under this section that the recipient of a grant shall submit to the Secretary— (i) an interoperability plan described in subsection (f)(1); and (ii) not later than 5 years after the date on which the recipient first receives funding under this section, an interoperability report described in subsection (f)(2). ; (2) by redesignating subsection (f) as subsection (g); (3) by inserting after subsection (e) the following: (f) Interoperability plan and report (1) Interoperability plan An interoperability plan referred to in subsection (e)(1)(F)(i) shall include— (A) a demonstrated set of use cases