; (B) data identifying the number and square footage of multifamily properties that are required by State or local authorities to report benchmarking data, the proportion that are HUD-assisted properties, and the proportion of all HUD-assisted properties that are subject to such requirements; (C) data identifying multifamily properties that participate in each pathway in the HUD Green Mortgage Insurance Premium program, including the number and square footage of participating properties and the proportion of eligible properties participating; (D) data identifying multifamily properties that participate in the HUD Better Buildings Challenge, including the number and square footage of participating properties; (E) estimates of the extent of HUD-assisted properties that are not conducting energy and water benchmarking; (F) estimates of potential energy and Federal cost savings if various levels of efficiency were implemented in HUD-assisted properties; (G) information identifying the typical costs of multifamily benchmarking and resources available to support multifamily owners and operators in benchmarking; and (H) information relevant to the impact of multifamily benchmarking, including published research studies. (2) Public availability The Secretary shall make the report publicly available on the website of HUD. (c) Provision of existing benchmarking data (1) Policies Not later than the expiration of the 6-month period beginning on the date of the enactment of this Act, the Secretary shall issue such regulations as may be necessary to ensure that owners of benchmarked HUD-assisted properties provide to the Secretary-selected ENERGY STAR Portfolio Manager data for the property. In developing such regulations, the Secretary shall— (A) provide for data to be released in a manner that protects information that identifies particular properties, but retains essential geographical and building characteristics to enable aggregate analysis; (B) require data sharing not less often than every three years