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This case study by the Rocky Mountain Institute (RMI) details a deep energy efficiency retrofit of the Empire State Building in New York City. The project focused on reducing thermal loads and upgrading systems to achieve significant energy savings and carbon reductions, utilizing an integrative design process and life cycle cost analysis to balance financial returns with environmental goals.

The 'Greening the White House' project, initiated by the Clinton Administration in 1993, is a comprehensive energy and environmental retrofit of the White House complex and the Old Executive Office Building (OEOB). Led by an Inter-Governmental-Agency Team, the project employs a six-component strategy—audit, feasibility study, early actions, demonstration spaces, long-term initiatives, and technology transfer—to improve resource efficiency and environmental performance while respecting the historic and security requirements of the site.