Certification for minimum energy performance requires that building electricity bills, cost, and usage be provided before improvements are made and that for a given building type and function, specific energy reduction goals must be met according to the guidelines for the EPA ENERGY STAR ® rating. The energy saving benefits of window film can help companies to achieve the initial rating of 60, and it also can provide additional LEED credits once the baselines are met. Solar energy saving window film is covered by the LEED for Existing Buildings Certification. Details can be found in the USGBC LEED for Existing Buildings Reference Guide, version 2.0 and 3.0, available through the USGBC website (http://www.usgbc.org).