; (4) an evaluation of water usage in data centers and recommendations for reductions in such water usage; and (5) updated projections and recommendations for best practices through fiscal year 2020. (f) Data center energy practitioner program The Secretary, in collaboration with key stakeholders and the Director of the Office of Management and Budget, shall maintain a data center energy practitioner program that leads to the certification of energy practitioners qualified to evaluate the energy usage and efficiency opportunities in Federal data centers. Each Federal agency shall consider having the data centers of the agency evaluated every 4 years, in accordance with section 543(f) of the National Energy Conservation Policy Act, by energy practitioners certified pursuant to such program. (g) Open data initiative The Secretary, in collaboration with key stakeholders and the Office of Management and Budget, shall establish an open data initiative for Federal data center energy usage data, with the purpose of making such data available and accessible in a manner that encourages further data center innovation, optimization, and consolidation. In establishing the initiative, the Secretary shall consider the use of the online Data Center Maturity Model. (h) International specifications and metrics The Secretary, in collaboration with key stakeholders, shall actively participate in efforts to harmonize global specifications and metrics for data center energy and water efficiency. (i) Data center utilization metric The Secretary, in collaboration with key stakeholders, shall facilitate in the development of an efficiency metric that measures the energy efficiency of a data center (including equipment and facilities). (j) Protection of proprietary information The Secretary and the Administrator shall not disclose any proprietary information or trade secrets provided by any individual or company for the purposes of carrying out this section or the programs and initiatives established under this section. .