According to the United Nations Framework Convention on Climate Change (UNFCCC), there are thirty countries, mostly advanced countries, designated as countries for Mandatory Greenhouse Gas Reduction. Korea will mostly likely be included in these countries based on the second phase of the mandatory reduction scheme, which starts in 2013. Efforts have been exerted to reduce greenhouse gas both locally and abroad, focusing on reducing building energy as part of the greenhouse gas reduction plan. This study proposes a maintenance management process for reducing CO2 in shopping mall complexes. The proposed process, which is composed of four steps, focuses on producing the facility improvement scenarios that can reduce energy through facility maintenance management. This study verifies the proposed maintenance management process by applying it to two shopping mall complexes currently in operation and creates the facility improvement scenarios for both malls. The proposed process may also be used to generate an improvement scenario for other facilities. (C) 2010 Elsevier B.V. All rights reserved.